71V256SA15PZGI8

Overview

The 71V256SA15PZGI8 is a 3.3V CMOS asynchronous static random-access memory (SRAM) organized as 32K x 8 bits, providing a total storage capacity of 256 kilobits. Manufactured by Renesas Electronics Corporation, this component features a parallel interface with a maximum access time of 15 nanoseconds. It operates within a supply voltage range of 3.0V to 3.6V and supports an industrial temperature range from -40°C to +85°C. The device is housed in a 28-pin Thin Shrink Small Outline Package (TSOP), designed for surface-mount technology applications requiring reliable data retention without clock or refresh cycles.

Feature Summary

• Fully static asynchronous circuitry eliminates the need for external clocks or periodic refresh operations during standard usage.
• Low standby power consumption ensures extended battery life when the chip select input is held at a CMOS logic level.
• LVTTL-compatible inputs and outputs allow direct interfacing with standard logic families without additional level shifting.

Applications

• High-performance processor secondary cache systems
• Industrial control units operating in wide temperature environments
• Battery-powered devices requiring low-power standby modes

Procurement Notes

Verify the specific suffix 'PZGI8' against official Renesas documentation to confirm package type, lead finish, and moisture sensitivity classification. Confirm current production status, as many variants in this series are marked obsolete. Ensure compatibility with existing PCB footprints for 28-TSOP packages before integration into new designs.

Selection Notes

Select this component when a 15ns access speed is required for 32Kx8 memory configurations in industrial environments. Compare against commercial grade variants if the -40°C to +85°C temperature range is unnecessary. Verify that the LVTTL I/O levels match the system's logic voltage requirements and that the TSOP form factor fits the available board space constraints.

Part Context

This part belongs to the 71V256SA family of 3.3V asynchronous SRAMs. The family offers various access speeds and temperature grades, packaged in both SOJ and TSOP formats. The 71V256SA series is designed to replace older 5V SRAM technologies, offering lower power consumption while maintaining high-speed performance suitable for embedded systems and communication equipment.

Replacement Considerations

Check for direct pin-compatible replacements within the same 71V256SA series, such as different speed grades or package options. Verify if newer RoHS-compliant versions are available, as older iterations may have restricted material compliance.