71V3558SA166BQG

Overview

The 71V3558SA166BQG is a synchronous Single Data Rate Zero Bus Turnover (ZBT) Static Random Access Memory integrated circuit manufactured by Renesas Electronics Corporation. It provides a total storage capacity of 4 Mbit, organized as 256K words by 18 bits. The device supports a maximum clock frequency of 166 MHz with an access time of 3.5 ns. It operates on a single 3.3V power supply within the range of 3.135V to 3.465V and utilizes a parallel interface. The component is housed in a 165-CABGA package measuring 13x15 mm and is rated for commercial operating temperatures between 0°C and +70°C.

Feature Summary

• Synchronous ZBT architecture eliminates dead bus cycles during read-to-write or write-to-read transitions.
• Pipelined output structure enables high-speed data transfer at frequencies up to 166 MHz.
• Single 3.3V I/O voltage compatibility simplifies system integration with standard logic families.

Applications

• High-performance embedded systems requiring fast memory access
• Network infrastructure equipment and communication devices
• Industrial control systems demanding reliable volatile storage

Procurement Notes

Verify RoHS compliance status through official manufacturer documentation prior to procurement, as environmental declarations may vary by production batch. Confirm that the specific revision matches design requirements. Note that this component is classified as obsolete; ensure long-term availability constraints are addressed in the supply chain strategy before finalizing orders.

Selection Notes

Select this part when a 4 Mbit synchronous SRAM with 18-bit width is required for 3.3V systems. The 166 MHz speed grade suits applications needing low latency. Ensure the PCB layout accommodates the 165-CABGA footprint. Compare against the 71V3558SA100 variant if lower power consumption is prioritized over maximum throughput.

Part Context

This component belongs to the 71V3558 family of synchronous ZBT SRAMs from Renesas. It shares architectural similarities with other members like the 71V3558SA100BQG but offers higher clock speeds. The family is designed for applications replacing asynchronous SRAMs where faster data rates are necessary without increasing board complexity.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.