71V321S25J

Overview

The 71V321S25J is a static random access memory component manufactured by Renesas Electronics Corporation. It features a storage capacity of 16 kbit organized as 2K x 8. The device operates with an asynchronous parallel interface and has a maximum access time of 25 ns. It supports a supply voltage range from 3 V to 3.6 V, with a maximum power current of 130 mA. The unit is housed in a 52-PLCC package suitable for surface mount installation. It functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access to the same memory array
• Asynchronous operation allowing flexible timing control without external clock synchronization
• Single data rate (SDR) transfer mechanism for standard memory read and write cycles

Applications

• Data buffering in high-speed digital signal processing systems
• Cache memory implementation in embedded controller architectures
• Temporary storage in industrial automation control units

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm RoHS compliance requirements against specific project standards, as this variant may not meet current environmental directives. Validate package integrity upon receipt, ensuring no physical damage to the PLCC leads. Review technical documentation for any design changes or obsolescence notices prior to final procurement decisions.

Selection Notes

Evaluate system compatibility regarding the 3.3V operating voltage and 25 ns access speed requirements. Ensure the 52-PLCC footprint aligns with existing printed circuit board layouts. Consider thermal management capabilities within the specified 0°C to +70°C operational range. Assess whether dual-port functionality provides necessary concurrency benefits over single-port alternatives for the intended application workload.

Part Context

This component belongs to the 71V321S series of dual-port SRAM devices. It represents a legacy product line designed for applications requiring fast, independent port access. The series typically offers various speed grades and packaging options to suit different performance and form factor constraints within industrial and commercial electronic systems.

Replacement Considerations

The 71V321L25JG is identified as a verified upgrade substitute. Verify pinout compatibility and electrical parameter alignment before integration.