7143LA70GB

Overview

The Renesas 7143LA70GB is a high-speed dual-port static random-access memory (SRAM) with a density of 32 kilobits, organized as 2K words by 16 bits. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The device features an asynchronous parallel interface with a maximum access time of 70 nanoseconds. It is housed in a 68-pin ceramic plastic leaded chip carrier (CPGA-68) package designed for surface-mount installation. The component supports industrial operating temperatures ranging from -55°C to +125°C and includes on-chip port arbitration logic.

Feature Summary

• True dual-ported architecture enabling simultaneous independent access to the same memory location from two separate ports without conflict.
• Integrated on-chip port arbitration logic manages bus contention automatically, eliminating the need for external discrete control circuitry.
• Fully asynchronous operation allows flexible timing requirements for both read and write cycles across either port.
• TTL-compatible input and output levels simplify integration with standard digital logic systems.

Applications

• High-speed data buffering in telecommunications equipment requiring concurrent data handling.
• Industrial automation controllers needing reliable memory storage under extreme temperature conditions.
• Military-grade avionics and defense systems utilizing radiation-hardened or qualified components.
• Test and measurement instruments requiring fast, deterministic memory access for signal processing.

Procurement Notes

Verify the specific suffix 'GB' against official Renesas documentation to confirm the exact package variant and environmental compliance status. Check current lifecycle status as legacy products may be subject to discontinuation notices. Ensure compatibility with existing board layouts regarding the 68-pin CPGA footprint and thermal management requirements for industrial temperature ranges.

Selection Notes

Select this component when true dual-port functionality is required for simultaneous master-slave or peer-to-peer memory access. Consider the 70ns access speed and 68-pin ceramic package for applications demanding robustness in harsh environments. Evaluate the -55°C to +125°C operating range against system thermal constraints. Compare against other 7143 series variants if different access times or package styles are needed.

Part Context

The 7143LA70GB belongs to the IDT/Renesas 7143 family of high-speed dual-port SRAMs. This family utilizes a master/slave approach to manage data integrity during simultaneous accesses. The device represents a CMOS technology implementation offering low power consumption relative to older bipolar technologies while maintaining high-speed performance suitable for complex digital systems.

Replacement Considerations

Official substitutes include other members of the 7143LA series with compatible pinouts and electrical characteristics. Verify functional equivalence for dual-port arbitration and voltage levels before substitution. Cross-reference with Renesas discontinuation notices for alternative recommendations if availability is constrained.