7140LA100J

Overview

The Renesas Electronics Corporation 7140LA100J is an asynchronous dual-port static random-access memory (SRAM) device. It provides a storage capacity of 8 kilobits, organized as 1K words by 8 bits. The component features parallel interface access with a maximum access time of 100 nanoseconds. It operates within a supply voltage range of 4.5 volts to 5.5 volts and supports through-hole installation in a 48-pin plastic dual in-line package (PDIP). The device is designed for industrial temperature ranges from 0°C to 70°C.

Feature Summary

• Supports simultaneous independent read and write operations via two separate ports
• Provides high-speed asynchronous data transfer capabilities
• Ensures data retention without requiring continuous power supply maintenance during active operation

Applications

• High-speed data buffering in communication systems
• Cache memory implementation in embedded processing architectures
• Real-time data acquisition and storage in industrial control equipment

Procurement Notes

Verify the exact suffix designation carefully, as the requested model differs from the verified 7140LA100PDG variant. Confirm package type compatibility and lead availability directly with authorized distributors, as this product line may have discontinuation notices or limited stock status. Ensure RoHS compliance matches specific project requirements before finalizing procurement orders.

Selection Notes

Select this component when dual-port functionality is required for concurrent master-slave memory access. Compare access speeds against other variants in the 7140LA series to match system timing constraints. Verify that the 48-pin DIP package fits the target PCB layout and that the 100ns speed grade meets the application's throughput requirements.

Part Context

This part belongs to the Renesas 7140LA family of CMOS dual-port SRAMs. These devices are engineered for applications demanding independent port access. The family typically includes various speed grades and package options to support diverse hardware integration needs across industrial and commercial sectors.

Replacement Considerations

The 7140LA100PDG serves as a direct pin-compatible alternative within the same series. Verify electrical specifications and package dimensions before substitution. Other speed variants like the 7140LA55 offer faster performance but require package compatibility checks.