7140LA20PF

Overview

The Renesas Electronics Corporation 7140LA20PF is an asynchronous dual-port static random-access memory (SRAM) integrated circuit. It provides a total storage capacity of 8 kilobits, organized as 1K words by 8 bits. The device supports parallel interface communication with a maximum access time of 20 nanoseconds and a write cycle time of 20 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and is designed for surface-mount installation in a 64-pin Thin Quad Flat Package (TQFP) measuring 14x14 mm. The component functions reliably across a commercial temperature range of 0°C to 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous read/write operations on separate ports
• Asynchronous operation eliminating the need for external clock synchronization signals
• CMOS technology ensuring low power consumption during active and standby modes

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded processing systems
• Data storage in industrial control logic circuits

Procurement Notes

Verify the exact package variant against official datasheets, as suffixes may indicate different lead frame or molding compounds. Confirm RoHS compliance status, as manufacturing changes can alter environmental declarations. Check for End-of-Life notifications or Product Change Notices that may affect long-term availability. Ensure the specific revision matches system design requirements before finalizing procurement orders.

Selection Notes

Select this component when a design requires independent bidirectional data paths without clock synchronization overhead. The 20ns speed class suits moderate-frequency digital signal processing tasks. Verify pin compatibility if replacing legacy parts from other manufacturers. Consider thermal dissipation capabilities within the TQFP housing for dense PCB layouts.

Part Context

This part belongs to the IDT 7140SA/LA series of dual-port SRAMs. The 'LA' designation typically indicates Lead-Free construction compliant with specific environmental standards. This series offers a balance between density and speed for general-purpose memory applications requiring non-volatile-like persistence during power cycles but volatile behavior during operation.

Replacement Considerations

Official substitutes include the 7140SA20PF8 and 7140LA20JG8. Verify pinout and electrical specifications match exactly before substitution.