71321SA25J

Memory IC Overview

The 71321SA25J is a dual-port static random access memory (SRAM) manufactured by Renesas Electronics. It features a storage capacity of 16 kbit organized as 2K x 8 bits. The device supports asynchronous parallel interfaces with a maximum access time of 25 ns. It operates within a supply voltage range of 4.5 V to 5.5 V and has a maximum power supply current of 110 mA. The component is housed in a 52-PLCC surface-mount package and is designed for commercial temperature ranges from 0°C to +70°C.

Memory IC Feature Summary

• Dual-port architecture enabling independent simultaneous access by two processors
• Asynchronous operation with fast 25 ns access times
• Standard 5V logic interface compatibility

Memory IC Applications

• High-speed data buffering between microprocessors
• Cache memory implementation in embedded systems
• Data storage in telecommunications equipment

Memory IC Procurement Notes

This component is officially discontinued and no longer in production. Verification of availability requires checking authorized distributors for remaining stock or surplus inventory. Ensure the specific part number matches legacy system requirements, as direct replacements may require design modifications. Confirm RoHS compliance status and moisture sensitivity levels before procurement.

Memory IC Selection Notes

Select this component when dual-port functionality is required for concurrent processor access without arbitration overhead. The 2Kx8 organization suits applications needing moderate data width and speed. Verify that the 5V operating voltage aligns with the target system's power rails. Consider the PLCC-52 package constraints for PCB layout and thermal management during selection.

Memory IC Part Context

The 71321SA25J belongs to the Renesas 71321SA series of dual-port SRAMs. This series provides high-speed memory solutions for complex digital systems requiring independent read/write ports. The device represents a legacy CMOS technology node, previously widely used in industrial and communication control applications before newer low-voltage alternatives became standard.

Memory IC Replacement Considerations

Official substitutes include the IDT71321SA25J. Cross-reference pinouts and electrical characteristics carefully when integrating alternative sources.