7143SA70GB

Overview

The Renesas Electronics Corporation 7143SA70GB is a high-speed, 32Kb (2K x 16) dual-port static random-access memory (SRAM). It features asynchronous parallel interface operation with a maximum access time of 70 ns. The device operates on a single 5V power supply within the 4.5V to 5.5V range and supports battery backup for data retention down to 2V. It is housed in a 68-pin ceramic PGA package suitable for surface mount or through-hole applications.

Feature Summary

• True dual-ported memory cells allow simultaneous independent access to the same memory location from both ports without conflict.
• On-chip port arbitration logic manages bus contention automatically, eliminating the need for external discrete control logic.
• Separate write control signals for the lower and upper bytes of each port enable flexible data bus width expansion.
• Fully asynchronous operation ensures compatibility with various system clock speeds from either port.

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in embedded processing systems
• Real-time data acquisition and storage in industrial control units
• FIFO buffer applications in network switching hardware

Procurement Notes

Verify component authenticity as this part may be obsolete. Confirm package integrity and lead condition upon receipt. Check datasheet for specific handling requirements regarding moisture sensitivity level. Ensure voltage levels match system specifications before installation. Review replacement options if new production is required.

Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration logic. Consider the 70 ns speed grade for moderate-to-high frequency asynchronous interfaces. Evaluate the 68-pin PGA package constraints against PCB layout capabilities. Compare power consumption characteristics against other SRAM families for thermal management needs.

Part Context

The 7143SA series represents a family of high-performance dual-port SRAMs designed by Renesas (formerly IDT). These devices utilize CMOS technology to provide low power consumption while maintaining fast access times. The 7143SA70GB specifically denotes the 70 ns speed variant in the ceramic PGA package, fitting into the broader portfolio of master/slave configurable memory solutions.

Replacement Considerations

Consult official Renesas documentation for qualified substitute part numbers. Verify pinout compatibility and electrical parameter equivalence before substitution. Check for any changes in package dimensions or thermal characteristics that may impact existing board designs.