71342LA70J8

Overview

The Renesas Electronics Corporation 71342LA70J8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It features a storage capacity of 32 kilobits organized as 4K words by 8 bits. The component supports parallel interface communication with an access time of 70 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The device is housed in a 52-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount installation.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access from either port.
• Integrated semaphore logic block for hardware-based arbitration and flag control between ports.
• Automatic power-down mode activated by chip enable and semaphore signals for low standby consumption.
• TTL-compatible input/output levels compatible with standard 5V logic systems.

Applications

• High-performance real-time engine memory buffers
• Industrial equipment data storage
• Dual-processor system interconnects

Procurement Notes

Verify the exact suffix configuration against official manufacturer documentation, as variations exist within the 71342 family regarding temperature ranges and packaging. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration. Check current production status as specific variants may be obsolete or subject to change notifications.

Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration circuitry. Ensure the design accommodates the 52-pin PLCC footprint and 5V operating voltage. Verify that the 70ns access speed meets the system timing constraints and that the industrial temperature range aligns with environmental specifications.

Part Context

This part belongs to the 71342 series of dual-port SRAMs manufactured by Renesas Electronics. The series provides true dual-ported memory cells with full asynchronous operation. Variants within the family differ primarily in access speeds, temperature ratings, and package types such as TQFP or PLCC.

Replacement Considerations

Consult official substitution lists for equivalent dual-port SRAMs with matching 32Kb capacity and 52-pin PLCC packages. Verify pin compatibility and electrical characteristics before replacing.