7143LA35G

Overview

The Renesas Electronics Corporation 7143LA35G is a high-speed 2K x 16 Dual-Port Static RAM. It features true dual-ported memory cells allowing simultaneous access to the same location. The device operates on a single 5V (±10%) TTL-compatible power supply with 2V data retention for battery backup. It includes on-chip port arbitration logic and BUSY inputs for versatile control. The component is available in a 68-pin PLCC package and supports asynchronous operation from either port.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to shared memory locations without discrete logic.
• On-chip port arbitration logic with BUSY input signals to manage concurrent access conflicts automatically.
• Versatile write control allows separate management of lower and upper bytes, facilitating expansion to 32-bit or wider data buses.

Applications

• High-speed parallel memory systems requiring full-speed error-free operation
• Master/Slave dual-port RAM configurations for 32-bit or wider system expansions
• Battery-backed volatile memory applications requiring 2V data retention

Procurement Notes

Verify component authenticity as this part may be sourced from legacy inventory. Confirm package integrity and lead condition before installation. Check for RoHS compliance status relative to specific manufacturing dates. Ensure storage conditions meet moisture sensitivity level requirements to prevent damage during assembly processes.

Selection Notes

Select this component when simultaneous bidirectional access to shared memory is required without external arbitration hardware. It is suitable for designs needing flexible byte-level write control and wide bus expansion capabilities. Verify that the 68-pin PLCC package fits the target PCB layout constraints and thermal requirements.

Part Context

The 7143 series represents a family of high-speed dual-port SRAMs designed by IDT and now manufactured by Renesas. These devices utilize a Master/Slave approach to simplify system design. The 7143LA35G specifically denotes the 35ns access time variant within the LA series, offering industrial temperature range performance in a compact plastic leaded chip carrier package.

Replacement Considerations

Public confirmed substitute part numbers include 7143LA20G for faster access times. Other compatible variants within the 7143 family may offer different access speeds or package options while maintaining functional compatibility.