71421SA25PFI

Overview

The 71421SA25PFI is a dual-port asynchronous static random-access memory (SRAM) integrated circuit manufactured by Renesas Electronics Corporation. It provides a total storage capacity of 16 kilobits, organized as 2K words by 8 bits. The device features parallel interface access with a maximum access time of 25 nanoseconds. It operates within a supply voltage range of 4.5 volts to 5.5 volts and is housed in a 64-lead Thin Quad Flat Package (TQFP) measuring 14x14 millimeters.

Feature Summary

• Supports simultaneous independent read and write operations through two distinct ports
• Utilizes CMOS technology for low power consumption during operation
• Provides high-speed asynchronous data transfer via parallel interface

Applications

• High-performance embedded systems requiring fast data buffering
• Industrial control units needing reliable temporary data storage
• Telecommunications equipment utilizing dual-port memory architectures

Procurement Notes

Verify component authenticity due to end-of-life status. Confirm package integrity upon receipt. Check RoHS compliance requirements against project specifications. Validate pin compatibility with existing PCB footprints. Review manufacturer discontinuation notices for long-term availability constraints.

Selection Notes

Evaluate system timing requirements against the 25 ns access specification. Ensure power supply stability within the 4.5V to 5.5V operating range. Compare physical dimensions with available board space for the 64-TQFP package. Assess thermal management needs based on maximum current draw. Consider alternative components if lead times are critical.

Part Context

This component belongs to the 71421SA series of dual-port SRAMs from Renesas. These devices are designed for applications requiring concurrent access from multiple masters. The series offers various speed grades and packaging options to suit different performance and size constraints in electronic designs.

Replacement Considerations

Check for direct pin-compatible upgrades from the same manufacturer family. Verify electrical parameters match original design requirements. Consult official substitution lists for recommended alternatives.