7143LA25PF

Overview

The Renesas Electronics Corporation 7143LA25PF is a high-speed, 32-kbit (2K x 16) dual-port static random-access memory (SRAM). It operates on a single 5V power supply with a voltage range of 4.5V to 5.5V and features a maximum access time of 25ns. The device utilizes parallel asynchronous interfaces for both ports, allowing simultaneous independent access to the same memory location. It is housed in a 100-pin TQFP surface-mount package and supports industrial temperature ranges from -40°C to +85°C.

Feature Summary

• True dual-ported architecture enabling simultaneous read/write access to identical memory locations without conflict
• On-chip port arbitration logic manages bus contention automatically, eliminating the need for external discrete control circuitry
• TTL-compatible single 5V power supply operation simplifies integration into standard digital systems
• Supports battery backup mode for data retention during primary power loss

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded processing systems
• Network switch and router packet storage applications
• Industrial control systems requiring reliable volatile data storage

Procurement Notes

Verify the specific suffix against official Renesas documentation, as variations such as 'PFGI' or 'JG8' indicate distinct packaging or environmental ratings. Confirm RoHS compliance status and moisture sensitivity levels prior to procurement. Ensure the selected variant matches the required operating temperature range and pinout configuration for the target PCB design.

Selection Notes

Select this component when simultaneous independent access to shared memory is critical for system performance. The 2K x 16 organization suits applications needing moderate capacity with low latency. Consider the 100-pin TQFP footprint for space-constrained designs. Verify that the 25ns access time meets the timing requirements of the host processor interface.

Part Context

This part belongs to the IDT/Renesas 7143 series of dual-port SRAMs, designed for Master/Slave configurations in wider memory systems. The 'LA' designation typically indicates an extended industrial temperature range compared to commercial variants. These devices are widely used in legacy and modern embedded architectures requiring high-bandwidth memory sharing.

Replacement Considerations

Official upgrades include the 7143LA20PF for faster 20ns access times. For pin-compatible alternatives, verify cross-references with other manufacturers offering 32Kb dual-port SRAMs in 100-TQFP packages, ensuring electrical parameters match exactly.