CY7C1426KV18-250BZC >
CY7C1426KV18-250BZC
Infineon Technologies
IC SRAM 36MBIT PAR 165FBGA
2100 Pcs New Original In Stock
SRAM - Synchronous, QDR II Memory IC 36Mbit Parallel 250 MHz 165-FBGA (13x15)
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CY7C1426KV18-250BZC Infineon Technologies
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CY7C1426KV18-250BZC

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6330955

DiGi Electronics Part Number

CY7C1426KV18-250BZC-DG
CY7C1426KV18-250BZC

Description

IC SRAM 36MBIT PAR 165FBGA

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2100 Pcs New Original In Stock
SRAM - Synchronous, QDR II Memory IC 36Mbit Parallel 250 MHz 165-FBGA (13x15)
Memory
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Minimum 1

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In Stock (All prices are in USD)
  • QTY Target Price Total Price
  • 1 3.8845 3.8845
  • 200 1.5032 300.6400
  • 680 1.4509 986.6120
  • 1360 1.4248 1937.7280
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CY7C1426KV18-250BZC Technical Specifications

Category Memory, Memory

Manufacturer Infineon Technologies

Packaging Tray

Series -

Product Status Last Time Buy

DiGi-Electronics Programmable Not Verified

Memory Type Volatile

Memory Format SRAM

Technology SRAM - Synchronous, QDR II

Memory Size 36Mbit

Memory Organization 4M x 9

Memory Interface Parallel

Clock Frequency 250 MHz

Write Cycle Time - Word, Page -

Voltage - Supply 1.7V ~ 1.9V

Operating Temperature 0°C ~ 70°C (TA)

Mounting Type Surface Mount

Package / Case 165-LBGA

Supplier Device Package 165-FBGA (13x15)

Base Product Number CY7C1426

Datasheet & Documents

Environmental & Export Classification

RoHS Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 3A991B2A
HTSUS 8542.32.0041

Additional Information

Other Names
2832-CY7C1426KV18-250BZC
SP005641685
CY7C1426KV18250BZC
-CY7C1426KV18-250BZC
Standard Package
680

A Deep Dive into the CY7C1426KV18-250BZC: Infineon’s 36Mbit QDR II Synchronous SRAM

Product Overview: CY7C1426KV18-250BZC QDR II SRAM

The CY7C1426KV18-250BZC leverages QDR II architecture to address the stringent requirements of next-generation networking infrastructure, particularly where minimal latency and maximal throughput are essential. The QDR II protocol separates read and write data buses, enabling simultaneous transactions and effectively doubling the data bandwidth achievable in conventional SRAM designs. This division, combined with a double data rate (DDR) clocking scheme, supports data transfers on both rising and falling edges of the clock, thus significantly enhancing aggregate memory bandwidth. The device’s 250 MHz clock frequency further optimizes efficiency in high-speed pipelines and multi-stage switch fabrics, minimizing idle cycles and ensuring deterministic access times.

Internally, the SRAM incorporates advanced sense amplifier arrays and tightly coupled I/O drivers to sustain signal integrity at high speeds. Noise immunity strategies, such as precision-matched impedance and robust power distribution networks within the FBGA package, counter crosstalk and ensure timing reliability. The 165-ball fine-pitch BGA footprint is optimized both for signal pinout clarity and for ease of PCB routing, which simplifies board-level integration and supports high-density layouts typical in leading-edge networking equipment.

Addressing high concurrency scenarios, the 4M × 9 organization provides efficient data alignment for packet header processing, lookup tables, and queuing mechanisms. Data integrity under intense transaction loads is maintained by strict setup and hold time specifications. In practice, during switch ASIC prototyping, utilizing this device as a dual-ported lookup table memory demonstrated consistent operation at 1.8 V, provided robust read-modify-write cycles, and reduced system test time due to the predictability of its command pipeline.

Practical deployment shows that leveraging separate I/O for reads and writes sharply reduces bus contention in high-throughput packet buffers. This becomes critical when integrating with multi-lane SERDES or line cards, where latency spikes must be avoided to guarantee deterministic packet forwarding. The device’s pitch and thermal design further facilitate power-efficient operation in densely packed systems, supporting extended uptime without extensive cooling overhead.

Compared to monolithic DDR SRAM, the QDR II approach achieves higher occupancy rates in data buffers due to its non-blocking access paradigm. The architecture’s deterministic latency profile serves as a foundation for real-time packet inspection and quality-of-service enforcement at wire speed. Design intuition points to the strategic advantage of deploying this SRAM in distributed memory hierarchies, especially where scalability, low access jitter, and power-aware operation are priorities.

Overall, the CY7C1426KV18-250BZC represents a precision-tuned memory solution for high-performance digital networks, where QDR II’s dual-bus structure and rigorous signal architecture unlock sustained performance at the intersection of speed, reliability, and scalability. This underpins robust system-level outcomes in evolving communication fabrics.

Key Features and Architecture of the CY7C1426KV18-250BZC

At the core of the CY7C1426KV18-250BZC lies the QDR II SRAM architecture designed to resolve common bottlenecks associated with traditional synchronous DRAM and pipelined SRAM systems. Through fully independent, concurrent read and write ports, the device circumvent bus turnaround latency, enabling simultaneous data transfer in both directions—a fundamental advancement for systems demanding sustained high bandwidth and deterministic latencies. This capability is amplified by the implementation of DDR interfaces on both ports, synchronizing data transactions with both edges of the clock. The effective throughput of 666 MT/s at 333 MHz positions the device for environments where rapid buffering and immediate access cycles underpin system reliability and efficiency.

The internal organization leverages a four-word burst mechanism per access. By associating each memory address with a contiguous block of four 9-bit words, the SRAM performs wide 36-bit transfers, reducing transaction overhead while limiting the strain on the address bus. In packet-switched and cache-centric designs, such as those found in high-performance networking ASICs or real-time signal processing arrays, this approach directly improves memory bandwidth utilization and minimizes address arbitration complexity. The device's multiplexed address input further reduces the number of required external connections, yielding streamlined PCB layouts—a significant advantage for constrained board real estate in compact form factors.

Precise clocking is maintained via the integrated phase-locked loop (PLL), offering tight jitter control and frequency programmability from 120 MHz up to the rated maximum. Accurate timing synchronization remains critical in multi-chip, high-speed memory arrays, where clock skew and signal integrity issues propagate rapidly across bus topologies. The programmable output impedance, supported by on-chip calibration circuits, enables dynamic adaptation to varying board and trace characteristics. Practical deployment shows that controlled impedance matching is indispensable for minimizing reflections and maintaining clean signal transitions in backplane and high-speed interconnect designs.

Data coherency mechanisms are pivotal, especially during overlapped accesses where multiple agents may read and write on closely spaced cycles. The architecture ensures delivery of the latest data during concurrent operations, reducing the need for additional arbitration logic in external controllers. This capability becomes essential in deep-pipeline SOCs or multi-threaded packet engines, where missed or outdated data could disrupt processing streams.

Supporting dual supply domains—1.8V (±0.1V) for the core and 1.4V to 1.8V for I/O—the device exhibits adaptability to evolving voltage requirements driven by advanced CMOS process nodes and cross-voltage system integration challenges. This flexibility facilitates migration between legacy and next-generation designs, enhancing design reuse and reliability.

In practical applications, leveraging burst access and independent dual-port operation enables predictable high-throughput buffering in network processors and routers, where parallel ingress and egress traffic require deterministic memory access patterns. The combination of low pin count, programmable impedance, and robust, contemporaneous data access positions the CY7C1426KV18-250BZC as an optimal choice for engineers aiming for scalable, resilient data handling infrastructures. Architectural provisions for data consistency and advanced timing control implicitly anticipate the needs of modern protocol acceleration, tightly coupled cache hierarchies, and FPGA-based acceleration engines, ensuring that the device aligns with industry’s evolving requirements for high-speed, low-latency memory subsystems.

Internal Operation and Functional Modes of the CY7C1426KV18-250BZC

The CY7C1426KV18-250BZC is architected with distinct clock domains for read (C/C̅) and write (K/K̅) operations, which isolates the two data streams at the physical interface. This approach enables both concurrent and sequential memory transactions without resource contention, leveraging dual-port strategies commonly used in high-throughput memory subsystems. The synchronous nature of all address and data inputs—fully registered on the rising edge of the appropriate clock—eliminates meta-stability risk and aligns memory operations to a deterministic timing model suitable for frequency scaling and timing closure in complex designs.

The device supports several nuanced operational modes to address a range of application requirements. In its normal mode, burst read and write commands benefit from an adjustable read latency, dictated by the DOFF signal. With DOFF held HIGH, the interface enforces a 1.5-cycle pipeline, balancing read transaction predictability with throughput for latency-sensitive paths. Alternately, toggling DOFF LOW switches the SRAM to a true 1-cycle latency mode, aligning with QDR I memory protocols and facilitating seamless interoperation in legacy or compatibility-driven deployments. This flexibility supports both aggressive low-latency accesses and higher-throughput, deeper pipelined workloads.

Switching to single-clock mode unifies the K/K̅ and C/C̅ clock trees, causing address and data registers to share timing references. This mode offers advantages in topologies where clock skew or routing complexity is a limiting factor. By reducing clock domains, it minimizes clock domain crossing hazards and simplifies timing analysis—particularly valuable in multi-board or long-trace system layouts where clock alignment can challenge system margin.

Granular data management is further enabled through byte write support. Here, explicit byte-level mask signals allow selective updating of sub-word data within the burst, promoting memory bandwidth efficiency and reducing unnecessary bit toggles—an important consideration in power-sensitive designs or those with high update locality. This fine-grained write mask can be leveraged in use-cases like packet header modification or unaligned data structure updates, streamlining buffer management without requiring read-modify-write cycles.

Depth expansion is natively supported via dedicated port select signals per interface. By controlling the activation logic of each device in a banked array, designers can architect scalable, wide-memory solutions. This is particularly relevant for throughput-intensive systems, such as network packet buffers or data acquisition front-ends, where system memory requirements often grow beyond single-chip limits. Proper management of port selects and clock distribution across such arrays preserves bank independence and maintains the integrity of synchronous access patterns.

A critical design constraint integral to this device is the alternation of port access on successive clock edges. Each port is gated such that data movement occurs on every other cycle, ensuring that internal resources are never contested and crosstalk between read and write pipelines is eliminated. This operational characteristic is key for achieving robust functionality at high frequencies. In practical integration, careful attention to clock phase relationships and address signal integrity mitigates race conditions and maximizes sustainable operating frequency. Consistent results have been observed using matched impedances and controlled trace length, verifying the importance of board-level attention to timing margin in high-speed synchronous SRAM designs.

Integrating these features together, the CY7C1426KV18-250BZC embodies a memory solution engineered for demanding, high-bandwidth, low-latency environments. The separation of port activities, configurability of operational modes, and support for byte-level granularity converge to deliver a flexible platform for advanced memory sub-systems. A pragmatic takeaway in system implementation is to leverage these configuration options not only for immediate functional alignment but also as a hedge against evolving application demands, thereby future-proofing the design against bottlenecks and providing the adaptability essential for sophisticated embedded and networking solutions.

Pin Configuration and Package Details for the CY7C1426KV18-250BZC

The CY7C1426KV18-250BZC features a compact 165-ball Fine Ball Grid Array (FBGA) with dimensions of 13 × 15 × 1.4 mm, optimized for signal integrity and heat dissipation in dense, high-speed memory implementations. The pin configuration leverages a multiplexed assignment, balancing address, data, control, and test functions across the matrix. This deliberate grouping enhances board layout efficiency, reducing trace lengths and parasitics, which are essential for sustaining data rates while mitigating crosstalk and electromagnetic interference.

A critical element of the device interface is the ZQ pin, responsible for enabling on-die output impedance calibration. By connecting an external precision resistor (RQ) to this pin, it aligns the output driver strength with system-level line characteristics, ensuring robust voltage swings and minimal reflection even on heavily loaded buses. Proper selection and placement of the RQ resistor, close to the device and with tight tolerance, anchor consistent performance amid temperature and process variations.

Clocking architecture is reinforced by the provision of dedicated CQ and CQ̅ echo clocks. These differential signals serve as time-aligned references for read data, facilitating reliable data capture by compensating for board-level propagation delays. In high-throughput designs, leveraging these echo clocks in synchronization logic allows for tighter setup and hold margins, particularly valuable in systems where trace delays approach or exceed device access time.

For board-level validation and in-system diagnostics, the presence of the JTAG boundary scan test access port marks a forward-looking engineering provision. Assigning TCK, TMS, TDI, and TDO pins for IEEE 1149.1 compliance streamlines connectivity testing, fault isolation, and in-circuit debug during both manufacturing and field maintenance cycles. The boundary scan feature expedites per-pin continuity verification and control path isolation without requiring intrusive system access, an essential factor in high-reliability or mission-critical deployments.

The packaging approach accommodates both Pb-free and standard soldering protocols. This dual support simplifies environmental compliance and manufacturing flexibility. Inserting the device into RoHS-conforming assembly lines or traditional lead-based processes introduces minimal risk of reflow incompatibility, thus stabilizing mechanical yields and offering greater latitude in multivendor system strategies.

In practice, prioritizing clear PCB routing for control and data groups, as dictated by the FBGA matrix, minimizes skew and enhances overall eye diagram integrity—addressing issues such as simultaneous switching outputs (SSO) and ground bounce. Employing simulation-driven signal integrity analysis at early design stages reveals the pronounced benefits of this pin allocation scheme.

The balanced intersection of mechanical, electrical, and testability priorities in the CY7C1426KV18-250BZC’s pinout yields an architecture tuned for demanding memory system integration. The configuration not only enables high-speed operation but also interlocks with advanced debug and calibration techniques, positioning it as a robust option within time-critical, large-scale memory arrays.

Electrical Characteristics and Performance of the CY7C1426KV18-250BZC

The CY7C1426KV18-250BZC leverages a combination of low-voltage operation and high-speed interface design to enable robust performance in bandwidth-sensitive systems. With a core supply voltage tightly regulated at 1.8 V ±0.1 V, paired with an I/O supply range spanning 1.4 V to 1.8 V, the device achieves a balance between dynamic power savings and signal integrity across a wide range of integration scenarios. The HSTL-compatible outputs facilitate seamless high-speed interconnection with FPGAs, ASICs, and network processors, minimizing voltage mismatches and reflections in dense board layouts.

Double Data Rate (DDR) signaling underpins the 333 MHz maximum clock frequency, effectively doubling bus throughput to 666 MT/s. This dual-edge transfer mechanism minimizes cycle times while supporting real-time traffic, which is critical in packet buffering and low-latency cache applications. The device’s latency profile—configurable to 1 or 1.5 cycles depending on DOFF logic—is engineered for rapid random access, yielding data valid within 0.5 ns post-output clock edge. Such deterministic timing enhances predictability in hierarchical memory subsystems, particularly when multiple memory banks are interleaved for sustained throughput.

Output impedance control via an external resistor (adjustable from 175 Ω to 350 Ω) offers fine-grained optimization of signal swing and termination. Empirical tuning of this parameter allows designers to match trace impedance, dampen overshoot, and curtail simultaneous switching noise, particularly when driving multi-drop buses in high-density backplane or module designs. This level of customizable drive strengthens signal margins during high-frequency operation, yielding robust eye diagrams even in adverse PCB environments.

Pipelined internal architectures serve dual purposes: masking core access time and enabling aggressive clocking without data contention, thereby allowing command and data paths to operate independently. Independent port deselection further reduces leakage and dynamic power by allowing unused sections of the array to idle without impacting overall system bandwidth, supporting composable, large-scale memory arrays. The close alignment between architectural features and power/performance tradeoffs ensures the memory can scale elastically as application demands grow—from line card buffers in networking equipment to instruction and data caches in embedded systems.

Practical deployment highlights the value of precise timing and interface adaptability. For instance, when interfacing with custom ASICs featuring strict setup/hold windows, the tight skew control and low output delay of this SRAM ensure reliable operation across PVT (process, voltage, temperature) variations. Line-rate packet processing in data centers can be sustained without introducing head-of-line blocking, as the short deterministic access latency supports parallel memory requests by network controllers. Tuning impedance for each board revision or operating condition directly translates to fewer signal-integrity design spins, underscoring the flexibility built into the device.

Notably, the CY7C1426KV18-250BZC integrates key attributes—ultra-fast bus operation, low voltage thresholds, precise output calibration, and modular power gating. These characteristics converge to provide a configurable solution for next-generation hardware demanding less power per bit, maximized data bandwidth, and predictable real-time behavior—an essential trio as system complexity and power constraints continue to escalate in high-performance computing environments.

Design Considerations and Application Scenarios for the CY7C1426KV18-250BZC

In high-performance networking and processing architectures, the CY7C1426KV18-250BZC burst SRAM offers a robust memory solution, combining speed, flexible interfacing, and reliable data integrity. At its core, the device leverages a synchronous pipeline architecture with separate read and write ports, fundamentally eliminating bus turnaround cycles common in traditional dual-port SRAMs. This separation is critical in environments where multi-threaded data operations converge, as it allows simultaneous transactions and circumvents pipeline stalls that would otherwise impede switching throughput or protocol translation speeds.

Signal timing precision underpins the consistent data exchange required by FPGAs and ASICs operating at elevated frequencies. The inclusion of echo clocks (CQ/CQ̅) provides a direct reflection of the memory device’s internal timing, enabling deterministic data capture across varying trace lengths and PCB characteristics. Designing with echo clocks simplifies timing closure; designers often route these signals alongside associated data lines, maintaining optimal skew margins. In distributed systems or backplane applications, echo clocks can decouple board-specific propagation variances from the timing budget, facilitating reliable system scaling.

Beyond single-device deployments, scalability emerges as a key requirement within datacenter switching fabrics and telecom aggregation nodes. The port select feature allows for clean cascading of multiple SRAM devices, supporting both increased bus width and extended memory depth. By integrating deterministic chip-select logic, the risk of bus contention is minimized during parallel accesses. Typical configurations interleave devices across data word boundaries, optimizing memory bandwidth utilization for aggregation engines or deep packet inspection modules.

Partial data manipulations represent another practical consideration, especially when implementing error correction codes or fine-grained status tracking. The device’s byte write control streamlines in-place modification, reducing unnecessary bus activity and preserving bandwidth for critical updates. This capability proves indispensable in parity-based storage arrays or adaptive routing tables, where frequent, narrow updates are performed.

At the board level, signal integrity becomes increasingly susceptible to reflection and crosstalk as trace densities grow. Programmable output impedance allows tailoring of the SRAM drivers to match the PCB environment, significantly mitigating transmission line artifacts over extended or heavily loaded nets. Empirical adjustments often yield marked improvements in eye diagrams, translating to lower bit-error rates—a factor that can tip overall system reliability in tightly regulated deployments.

One nuanced insight is the device’s adaptability not just within packet-centric domains but also as a low-latency cache in computational storage offload or as a deterministic state buffer for real-time networking protocols. Its architectural features promote both deterministic timing and configurability, attributes that align with evolving demands for service-level consistency and seamless hardware scaling. In effect, design strategies that emphasize clean signal margins, flexible interfacing, and transactional concurrency naturally extract the SRAM’s performance ceiling, forming a template for robust, future-proofed subsystem integration.

Test, Debug, and Boundary Scan Capabilities in the CY7C1426KV18-250BZC

Test, debug, and boundary scan functionality are engineered as foundational features within the CY7C1426KV18-250BZC, directly addressing stringent reliability and yield requirements in advanced digital systems. At the core lies a robust IEEE 1149.1 JTAG-compliant infrastructure, delivering granular visibility into device I/O states without necessitating intrusive probing. This is achieved through an embedded test access port (TAP) controller that orchestrates standard boundary scan operations—most notably EXTEST for external pin testing and interconnect verification, and SAMPLE/PRELOAD for capturing live system signals or configuring register values prior to state transitions. The ability to place output pins into a high-impedance state further empowers controlled signal isolation during debug cycles or when logically partitioning subsystems under test.

A well-implemented boundary scan chain leverages Bypass and IDCODE instructions to streamline device identification and accelerate chain initialization, particularly in multi-device setups typical of stacked memory banks, complex processor/filter subsystems, or densely routed PCBs. Efficient chain management becomes indispensable as chain depth and topology complexity grow in high-pin-count environments. Integrators routinely exploit these features for rapid fault localization, reducing diagnostic overhead and minimizing board rework costs. The facility to probe signal integrity and bus contention scenarios, directly via boundary cells, enhances production test coverage and supports predictive maintenance protocols in the field.

Security and integration trade-offs are addressed by the selective enable/disable capability of the test access port. In applications where silicon footprint or attack surface must be minimized—such as secure computing platforms or ruggedized embedded modules—the optional TAP deactivation ensures compliance with secure design guidelines while preserving operational compatibility with industry-standard design-for-test (DFT) flows. Designers can thus balance debug accessibility during initial bring-up and high-volume manufacturing with the requirements of end-user operational integrity.

Experience demonstrates that preemptive deployment of boundary scan resources can uncover subtle PCB assembly defects that would otherwise escape detection by traditional functional test methods; solder bridging, open circuits, or marginal via connections frequently reveal themselves as anomalous scan chain reads. Continuous use of JTAG-based diagnostics also expedites root cause analysis for intermittent failures emerging under environmental stress, a persistent challenge in mission-critical or lifecycle-extended platforms.

For robust embedded system design, the interplay between scan capabilities and broader verification workflows forms a virtuous feedback loop, injecting actionable data directly into yield improvement and reliability tracking systems. Boundary scan in the CY7C1426KV18-250BZC thus serves not only as a compliance checkbox but as an enabling axis for scalable and predictable productization, underscoring the strategic value of integrated test logic in contemporary electronic engineering.

Power-Up, Initialization, and Reliability Aspects of the CY7C1426KV18-250BZC

Power-up management of the CY7C1426KV18-250BZC hinges on disciplined sequencing protocols that avoid ambiguous logic states, enforcing core voltage establishment prior to I/O activation. PLL synchronization requires at least 20μs of clock stability, after which deterministic initialization occurs, ensuring all internal state machines begin in a known configuration. In high-throughput memory architectures, this mitigates risks of startup glitches propagating into downstream elements, a principle regularly validated in system verification cycles.

The device’s soft error mitigation strategy leverages high neutron immunity, quantified through accelerated laboratory irradiation and real-world reliability studies. The resilience achieved is critical in deployment across electrically noisy and radiation-prone environments, where statistical fault models translate directly into lower system-level silent error rates. Reliability engineers routinely factor these immunity figures into mean time between failure estimates for safety-critical applications, recognizing their impact on overall fault tolerance.

Electrical robustness is further anchored by expansive absolute maximum ratings which accommodate transient events such as surges and over-voltages, commonly encountered during field installation and debug cycles. ESD protection is benchmarked beyond 2001V per MIL-STD-883, significantly reducing susceptibility to handling-induced faults. Design experience consistently affirms the importance of conservative margining to absorb unexpected electrical excursions, cementing the device’s longevity in diverse deployment scenarios.

Signal integrity is maintained via tightly specified input and output timing, aligned to reference clocks with stringent setup and hold windows. These definitions are enforced over the entire operational range of voltage (Vcc variability) and temperature, accommodating application requirements from industrial control to advanced networking. Interface timing compliance translates to predictable handshake protocols, lowering integration risk especially where timing skews could otherwise corrupt data throughput. Optimizing board layout, clock distribution, and voltage regulation in conjunction with these timing specifications ensures reliable performance under real-world conditions.

Layering these mechanisms achieves a cohesive framework where startup reliability, operational immunity, and electrical resilience coexist, rendering the CY7C1426KV18-250BZC a dependable node even in environments favoring robustness over raw performance. This convergence of protection strategies with nuanced timing enforcement underlines the design's strength—emphasizing the value of integrating stringent engineering provisions from the ground up.

Potential Equivalent/Replacement Models for the CY7C1426KV18-250BZC

Identifying suitable alternatives for the CY7C1426KV18-250BZC requires a systematic examination of pin configuration, interface timing, and overall architecture. The CY7C1426KV18-250BZC, a member of Infineon's QDR II SRAM family, is prized for its low-latency access, high bandwidth, and Synchronous I/O, catering to critical buffering in high-performance networking subsystems. When system demands shift—such as evolving packet sizes, changing cache-line strategies, or migration to different bus widths—selecting compatible replacement models becomes essential for preserving design momentum and supply chain resilience.

Foundational to the substitution process is the insight that all models in this generation share a near-identical timing interface and physical footprint, supporting plug-and-play interchangeability. For instance, CY7C1411KV18, structured as 4M × 8, supports data bus downsizing without a reduction in memory capacity, aligning well with resource-constrained pipelines or narrower data path designs. Contrastingly, the CY7C1413KV18, offering a 2M × 18 configuration, allows doubling the bit width per addressable word, directly impacting system throughput in architectures favoring wider internal data buses. Topology-driven optimizations may elevate the CY7C1415KV18 (1M × 36) as a prime selection when harmonizing with native 36-bit cache lines, reducing controller-level packing or unpacking overhead.

A structured approach evaluates the persistence of design intent in the face of these substitutions. For network switch architectures, adapting from 18-bit to 36-bit datapaths, for example, directly correlates to streamlined data transfers and lower internal bottlenecks. In tightly-coupled FPGA co-processor designs, leveraging the 8-bit alternative often results in lower power envelopes and reduced PCB complexity, ensuring minimal signal integrity risk without compromising density.

A nuanced challenge lies in secondary parameters—such as core voltage, refresh requirements, and packaging options—that may marginally differ across models. Such subtleties are routinely managed at the schematic or layout level, provided careful attention is paid in the early evaluation phase. For designs requiring seamless procurement across long product lifecycles, utilizing these family-compatible models strengthens supply continuity strategies, reducing the threat of single-source dependency or obsolescence-triggered requalification efforts.

The salient insight is the practical agility conferred by embedding interface and footprint symmetry across the QDR II family. This architecture-level consistency unlocks not only rapid cross-qualification but also facilitates modular hardware platforms, future-proofing throughput and bandwidth scalability with minimal engineering disruption. Systems built with these principles remain resilient in the face of market or specification flux, underscoring the value of selecting such pin- and timing-compatible models from the outset.

Conclusion

The Infineon CY7C1426KV18-250BZC QDR II SRAM represents a pivotal advancement in the engineering of high-bandwidth, low-latency memory subsystems required for next-generation networking, telecommunications infrastructure, and compute-intensive processing nodes. Its core architecture is defined by true dual-port capability, enabling fully simultaneous, cycle-independent read and write operations. This eliminates read/write contention and substantially reduces bottlenecks common in single-port or pseudo-dual-port implementations, a critical factor when deterministic throughput and consistent low-latency response are non-negotiable.

At the circuit level, the QDR II protocol strategically separates data input and output busses, allowing data transfers on both clock edges and maximizing utilization of bus bandwidth. The CY7C1426KV18-250BZC optimizes timing margins through precise control of set-up, hold, and clock-to-output characteristics. Integration of advanced on-die termination mitigates signal reflections and crosstalk on high-frequency traces, improving channel integrity in densely routed backplanes and multi-board environments. This device’s robust timing closure, validated across voltage and temperature extremes, instills confidence in designs pushing the limits of signal speed and board complexity.

System integration extends beyond pure performance. The device includes programmable burst lengths and address configurations, lending flexibility during schematics capture and PCB layout. Its unified support for standard interfaces simplifies controller logic and accelerates bring-up cycles, especially in multi-vendor, multi-sourcing design strategies. Embedded boundary scan via JTAG streamlines production test coverage and post-assembly diagnostics, reducing field return rates and facilitating rapid system validation. Designers consistently leverage comprehensive vendor documentation and reference designs, minimizing integration friction during acceleration to volume manufacturing.

Application scenarios increasingly demand scalable memory resources tightly coupled to FPGAs, NPUs, or custom ASICs handling real-time packet classification, lookup, and buffer management. The CY7C1426KV18-250BZC, with its flexible organization and support for large density configurations, adapts efficiently to shifting requirements in edge and core network platforms. Practical deployments demonstrate sustained throughput under asymmetric traffic patterns, validating the architecture’s capability to absorb and process bursts with minimal latency spikes. Careful trace length matching, power supply decoupling, and precise impedance control remain essential during system board design to fully exploit the device’s timing margins.

A nuanced consideration emerges in the tradeoff between feature-rich interface options and silicon area: the CY7C1426KV18-250BZC judiciously balances configurability and physical resource efficiency. This allows system architects to achieve tailored memory hierarchies without incurring unwarranted complexity or power penalties. In future-facing designs where upgradability and interoperability are priorities, its conformance with QDR II standards ensures seamless migration to higher-speed derivatives and compatibility across diverse ecosystems.

In sum, the engineering approach embodied by the CY7C1426KV18-250BZC anchors reliable high-speed memory access in demanding system architectures. The device’s architectural soundness, verified performance, and integrative design support converge to offer a platform that reduces technical risk and accelerates system innovation. The ongoing miniaturization and increasing integration densities in system design underscore the relevance of such solutions, positioning this SRAM family as a robust foundation for scalable, future-proof systems.

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Catalog

1. Product Overview: CY7C1426KV18-250BZC QDR II SRAM2. Key Features and Architecture of the CY7C1426KV18-250BZC3. Internal Operation and Functional Modes of the CY7C1426KV18-250BZC4. Pin Configuration and Package Details for the CY7C1426KV18-250BZC5. Electrical Characteristics and Performance of the CY7C1426KV18-250BZC6. Design Considerations and Application Scenarios for the CY7C1426KV18-250BZC7. Test, Debug, and Boundary Scan Capabilities in the CY7C1426KV18-250BZC8. Power-Up, Initialization, and Reliability Aspects of the CY7C1426KV18-250BZC9. Potential Equivalent/Replacement Models for the CY7C1426KV18-250BZC10. Conclusion

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Frequently Asked Questions (FAQ)

What is the key function of the CY7C1426KV18-250BZC SRAM chip?

The CY7C1426KV18-250BZC is a synchronous QDR II SRAM chip with a 36 Mbit storage capacity, designed for high-speed data transfer at 250 MHz. It is used in applications requiring fast, volatile memory with parallel interface support.

Is the CY7C1426KV18-250BZC compatible with standard circuit boards?

Yes, this SRAM chip features a 165-FBGA package (13x15 mm) suitable for surface mount technology, making it compatible with standard circuit board assembly processes. Proper pin connection and voltage requirements should be observed.

What are the advantages of using QDR II SRAM like the CY7C1426KV18-250BZC?

QDR II SRAM offers high bandwidth and low latency data access, ideal for applications like telecommunications, networking, and high-speed data processing. Its synchronous operation ensures coordination with system clocks for efficient performance.

What are the electrical requirements and operating conditions for this SRAM?

The chip operates at a supply voltage of 1.7V to 1.9V and functions within a temperature range of 0°C to 70°C. Proper voltage and temperature management are essential for optimal performance and reliability.

What should I consider when purchasing the CY7C1426KV18-250BZC SRAM in stock?

The SRAM is available in new, original condition with 1857 units in stock, packaged in trays. As a last time buy product, consider lead times and compatibility with your project requirements, and ensure it meets your application specifications.

Quality Assurance (QC)

DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.

Quality Assurance
Counterfeit and defect prevention

Counterfeit and defect prevention

Comprehensive screening to identify counterfeit, refurbished, or defective components, ensuring only authentic and compliant parts are delivered.

Visual and packaging inspection

Visual and packaging inspection

Electrical performance verification

Verification of component appearance, markings, date codes, packaging integrity, and label consistency to ensure traceability and conformity.

Life and reliability evaluation

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