71342SA35JI

Overview

The Renesas Electronics Corporation 71342SA35JI is a dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 32 kbit, organized as 4K words by 8 bits. The device features asynchronous parallel interface with a maximum access time of 35 ns. It operates on a single power supply ranging from 4.5 V to 5.5 V. The component is housed in a 52-pin PLCC package with J-leads, measuring 19.13 mm by 19.13 mm. It supports surface mount installation and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Dual-port architecture enabling simultaneous independent access to the same memory location from two separate ports.
• Asynchronous operation allowing flexible timing control for both read and write cycles without clock synchronization.
• On-chip port arbitration logic manages access conflicts between the two independent ports.

Applications

• High-speed data buffering in communication systems requiring concurrent host and peripheral access.
• Real-time processing applications where simultaneous data logging and retrieval are necessary.
• Industrial equipment interfaces needing reliable volatile memory with independent port control.

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and moisture sensitivity handling requirements before assembly. Check for valid RoHS compliance documentation if required by specific regional regulations. Ensure replacement parts match electrical specifications and pinout compatibility.

Selection Notes

Select this component when dual-port functionality is critical for system architecture. Consider the 35 ns access speed for moderate-to-high frequency asynchronous operations. Evaluate the 52-PLCC package constraints against available PCB space. Verify voltage tolerance aligns with the 4.5 V to 5.5 V operating range.

Part Context

This part belongs to the Renesas 71342SA series of dual-port SRAMs. It shares architectural similarities with other members like the 71342LA20PFG but differs in speed grade and package type. The series is designed for applications requiring high-reliability memory with independent port access capabilities.

Replacement Considerations

Publicly confirmed substitute: 71342SA35JI8. This variant offers identical electrical characteristics and functionality but utilizes tape-and-reel packaging instead of tube packaging. Verify package dimensions remain compatible with existing footprints.