7134LA70J

Overview

The Renesas Electronics Corporation 7134LA70J is a 32Kb (4K x 8) dual-port static random access memory IC. It features an asynchronous parallel interface with a 70 ns access time and write cycle time. The device operates on a single 5V power supply ranging from 4.5V to 5.5V. It is housed in a 52-PLCC surface-mount package with J-leads, measuring 19.13x19.13 mm. The component supports commercial temperature operation between 0°C and 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access by two processors
• Asynchronous parallel interface for flexible system integration
• Single 5V power supply operation

Applications

• High-speed data buffering in communication systems
• Cache memory implementation in embedded controllers
• Data storage in industrial automation equipment

Procurement Notes

This component is officially discontinued and no longer manufactured by Renesas Electronics. Verification of availability requires checking authorized distributors for remaining stock or surplus market sources. Compliance with RoHS standards is not confirmed for this specific part number. Engineers must validate pin compatibility and electrical specifications against current replacement options before procurement.

Selection Notes

Designers should evaluate the 7134LA70J primarily for legacy system maintenance where the 52-PLCC package and 70 ns speed are required. Consider the commercial temperature range limits when selecting alternatives for harsh environments. Verify that the target application does not require RoHS compliance, as this model may not meet modern environmental directives. Assess total cost of ownership including potential obsolescence risks.

Part Context

The 7134LA70J belongs to the IDT/Renesas 7134 series of dual-port SRAMs. This family provides high-performance memory solutions for applications requiring concurrent read/write operations. The 'LA' suffix typically denotes the specific speed grade and package variant within the broader product line. These components were widely used in networking and telecommunications hardware prior to their discontinuation.

Replacement Considerations

Official substitutes include the 7134SA70J and 7134LA70JI8. These variants share similar electrical characteristics but may differ in packaging or temperature ratings. Cross-reference datasheets to ensure pinout compatibility and verify that performance metrics meet design requirements.