7140LA20J8

Overview

The 7140LA20J8 is an asynchronous dual-port static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It provides a storage capacity of 8 kilobits, organized as 1K words by 8 bits. The device features a parallel interface with a maximum access time and write cycle time of 20 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 52-lead Plastic Leaded Chip Carrier (PLCC) package measuring 19.13x19.13 mm. The component is rated for commercial operating temperatures between 0°C and 70°C.

Feature Summary

• Dual-port architecture enabling independent read/write operations on two ports simultaneously
• Asynchronous operation allowing flexible timing control without clock synchronization
• CMOS technology providing low power consumption characteristics

Applications

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

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Verification of availability requires checking authorized distributors for remaining stock or surplus channels. Compliance with RoHS3 standards is confirmed for specific manufacturing dates; verify the specific unit's environmental status against current regulatory requirements before integration into new designs.

Selection Notes

Select this part when a small-capacity, high-speed dual-port memory solution is required for parallel bus architectures. The 20ns speed class suits applications needing rapid data exchange between processors. Ensure the design accommodates the 52-PLCC footprint and 5V logic levels. Consider pin compatibility if replacing older IDT variants within the same family.

Part Context

The 7140LA20J8 belongs to the Renesas 7140LA series of dual-port SRAMs. This series is designed for applications requiring simultaneous access from two different masters. It serves as a bridge between high-speed processors and slower peripheral devices, facilitating efficient data transfer in complex electronic systems.

Replacement Considerations

Verify cross-compatibility with IDT7140LA20J8 due to historical brand acquisition. Check pinout and electrical specifications against alternative dual-port SRAMs from other manufacturers if sourcing new units.