7134LA45P

Overview

The Renesas Electronics Corporation 7134LA45P is a high-speed 32Kb (4K x 8) dual-port static random-access memory (SRAM). It features asynchronous parallel interface operation with a maximum access time of 45 ns. The device operates on a single 5V power supply within the 4.5V to 5.5V range and supports battery backup for data retention down to 2V. It is housed in a 48-pin Dual In-line Package (DIP) suitable for through-hole mounting.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access from either port without hardware arbitration
• Fully asynchronous operation allowing flexible timing control for both read and write cycles
• Automatic power-down mode controlled by chip enable signals to minimize standby power consumption
• TTL-compatible logic levels simplifying integration with standard digital systems

Applications

• High-performance buffer memory in telecommunications equipment
• Data storage in industrial automation controllers
• Cache memory in embedded computing systems
• Shared memory interfaces in multi-processor architectures

Procurement Notes

Verify component authenticity due to end-of-life status. Confirm package integrity as lead frames may show oxidation. Check datasheet revisions for pinout consistency. Validate RoHS compliance requirements against project specifications. Ensure supplier provides traceability documentation for critical applications.

Selection Notes

Select this part when true dual-port capability is required for contention-based shared memory access. Choose over single-port SRAM if simultaneous bidirectional data transfer is necessary. Consider the 45 ns speed grade for moderate latency requirements. Verify DIP package compatibility with existing PCB footprints before finalizing design.

Part Context

The 7134 series represents a family of high-speed CMOS dual-port RAMs designed for systems requiring external arbitration. The LA suffix indicates commercial temperature range operation with battery backup support. This specific model belongs to the legacy IDT/Renesas portfolio, widely used in established industrial and communication designs prior to modern serial memory alternatives.

Replacement Considerations

Direct pin-to-pin replacements are limited due to EOL status. Evaluate newer dual-port SRAM families from Renesas or Microchip for functional equivalence. Verify voltage compatibility and access speed matches during substitution. Assess mechanical footprint differences between DIP variants.