7140LA35PDG

Overview

The Renesas Electronics Corporation 7140LA35PDG is an asynchronous dual-port static random-access memory (SRAM) device. It features a storage capacity of 8 kilobits organized as 1K x 8 bits. The component provides independent read and write ports for simultaneous data access. It operates within a supply voltage range of 4.5 V to 5.5 V. The maximum access time is specified at 35 ns. The device supports parallel interface communication. It is housed in a 48-pin plastic dual in-line package (PDIP). The operational temperature range extends from 0°C to +70°C.

Feature Summary

• Dual-port architecture enabling independent port operations
• Asynchronous parallel interface for data transfer
• CMOS technology implementation
• TTL-compatible logic levels

Applications

• High-speed data buffering systems
• Network equipment memory modules
• Industrial control system storage
• Telecommunications hardware components

Procurement Notes

This component is officially designated as End-of-Life by the manufacturer. Distribution channels indicate restricted availability or discontinuation status. Verify current stock status with authorized suppliers before integration planning. Alternative sourcing may require qualification of substitute parts. Confirm RoHS compliance details through official documentation prior to procurement decisions.

Selection Notes

Select this part for applications requiring simultaneous independent access to shared memory resources. The 35 ns speed suits moderate-frequency digital systems. Ensure voltage requirements align with 5V logic families. Consider the PDIP package constraints for PCB layout. Evaluate thermal performance within the commercial temperature range. Verify pin compatibility if replacing legacy designs.

Part Context

The 7140LA series represents a family of dual-port SRAMs designed for efficient data handling. This specific model utilizes CMOS technology for power efficiency. It serves as a bridge between high-speed processors and slower peripheral devices. The dual-port design eliminates bus contention common in single-port memories. It belongs to the broader category of asynchronous memory solutions.

Replacement Considerations

Official substitutes include IDT7140LA35PDG due to historical manufacturing lineage. Verify pinout and electrical specifications match exactly. Check for updated RoHS compliance status in replacement variants. Ensure package dimensions remain compatible with existing footprints.