7164L25YG8

Overview

The 7164L25YG8 is an asynchronous static random-access memory (SRAM) integrated circuit manufactured by Renesas Electronics Corporation. It provides a storage capacity of 64 kilobits, organized as 8K words by 8 bits. The device features a parallel interface with a maximum access time and write cycle time of 25 nanoseconds. It operates on a single 4.5V to 5.5V power supply and supports surface-mount installation in a 28-lead Small Outline J-Lead (SOJ) package. The component is rated for commercial operating temperatures ranging from 0°C to 70°C.

Feature Summary

• Asynchronous SRAM technology requiring no clocks or refresh cycles
• Parallel data interface for direct system connection
• Single voltage power supply operation within standard logic levels

Applications

• Embedded systems requiring volatile data storage
• Industrial control units needing fast read/write access
• Consumer electronics utilizing parallel memory architectures

Procurement Notes

This component has been officially declared obsolete and is no longer in production. Verification of availability should focus exclusively on authorized distributors offering remaining stock or certified replacement parts. Buyers must confirm the specific suffix variations and ensure compliance with current environmental regulations such as RoHS3 before finalizing any acquisition decisions.

Selection Notes

Engineers selecting this part should verify that the 28-SOJ package dimensions match the existing PCB footprint. The 25ns access speed and 64Kb capacity define the performance envelope. Compatibility checks must include the 4.5V to 5.5V supply range and LVTTL-compatible I/O levels to ensure proper signal interfacing with the host processor without additional level shifting.

Part Context

The 7164L25YG8 belongs to the IDT 7164 series of high-speed CMOS static RAMs. This family was designed for applications demanding rapid data retrieval and low power consumption. The 'L' suffix typically denotes specific packaging or temperature grade variations within the broader product line, while the 'YG8' indicates the SOJ package type and reel packaging format.

Replacement Considerations

AS7C164A-15JCNTR is listed as a similar alternative part number.