71342LA70J

Overview

The Renesas Electronics Corporation 71342LA70J is a high-speed 32 Kbit (4K x 8) dual-port static random-access memory (SRAM). It features fully asynchronous parallel operation with independent control for each port. The device supports simultaneous access to the same memory location and includes on-chip semaphore logic for arbitration. It operates on a single 5V power supply within a voltage range of 4.5 V to 5.5 V, with a maximum access time of 70 ns.

Feature Summary

• True dual-ported memory cells enabling simultaneous independent access from either port
• Fully asynchronous operation allowing flexible timing control for both ports
• Integrated hardware semaphore signaling block for automatic arbitration between ports
• Automatic power-down feature controlled by chip enable and semaphore signals

Applications

• High-performance real-time engine systems requiring concurrent data access
• Industrial equipment utilizing 32-bit microcontrollers for process control
• Network routers and switches needing fast buffer memory management
• Telecommunications infrastructure requiring reliable dual-port data buffering

Procurement Notes

Verify component authenticity through authorized distributors due to potential legacy status. Confirm package integrity and moisture sensitivity handling requirements before assembly. Check for RoHS compliance variations across manufacturing lots. Ensure pin compatibility with existing PCB footprints during replacement planning. Validate electrical specifications against current system design constraints.

Selection Notes

Select this component when simultaneous bidirectional memory access is required without external arbitration circuitry. Suitable for designs needing low standby power via automatic power-down modes. Ideal for applications demanding TTL-compatible 5V logic levels. Consider thermal performance and operating temperature range relative to environmental conditions.

Part Context

This part belongs to the 71342LA series of dual-port SRAMs manufactured by Renesas Electronics. It is designed for applications requiring high-speed data sharing between two independent processors or controllers. The series offers various access times and packaging options to suit different speed and form factor requirements in embedded systems.

Replacement Considerations

IDT71342LA70J is a confirmed substitute part number.