7142SA55CB

Memory IC Overview

The Renesas Electronics Corporation 7142SA55CB is a high-speed, 16K-bit (2K x 8) dual-port static random-access memory (SRAM). It features asynchronous parallel interface with a maximum access time of 55 ns. The device operates on a single 5V power supply within the 4.5V to 5.5V range and supports automatic power-down modes for low standby current. It is housed in a 48-pin ceramic dual in-line package (CDIP-SB-48) designed for through-hole mounting.

Memory IC Feature Summary

• True dual-port architecture enabling simultaneous independent access to shared memory locations by two separate processors or systems without external arbitration logic.
• Asynchronous operation with TTL-compatible inputs and outputs, simplifying integration into standard digital logic environments.
• Automatic power-down functionality controlled by chip enable signals to minimize standby power consumption during inactive periods.

Memory IC Applications

• High-speed data buffering in telecommunications equipment requiring concurrent read/write operations.
• Cache memory subsystems in embedded processing architectures needing fast, non-blocking access.
• Real-time control systems utilizing master-slave dual-port configurations for error-free data transfer.

Memory IC Procurement Notes

Verify component authenticity as this part is discontinued. Confirm package integrity due to age. Check RoHS compliance status as it may not meet current environmental standards. Ensure compatibility with existing system voltage levels before procurement.

Memory IC Selection Notes

Select this component when true dual-port capability is required for simultaneous access without external logic. Consider the 48-pin CDIP package constraints for PCB layout. Evaluate end-of-life status for long-term production viability and potential obsolescence risks.

Memory IC Part Context

Part of the 7142SA series of high-speed dual-port SRAMs. Designed to operate as a slave device alongside master dual-port RAMs in wider word-length systems. Manufactured by Renesas Electronics, formerly IDT, maintaining legacy performance specifications for industrial applications.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the discontinued status, direct pin-to-pin replacements from other manufacturers should be verified against specific electrical and mechanical parameters before adoption.