7164S45TPGI

Overview

The 7164S45TPGI is a 64Kbit asynchronous static random-access memory (SRAM) integrated circuit manufactured by Renesas Electronics Corporation. It features a parallel interface with an organization of 8K words by 8 bits. The device operates within a supply voltage range of 4.5V to 5.5V and supports a maximum access time of 45ns. It is housed in a 28-pin dual in-line package (PDIP) with a standard 0.300-inch width. The component is designed for through-hole mounting and functions within an ambient temperature range of 0°C to 70°C.

Feature Summary

• Asynchronous parallel memory architecture for direct data bus interfacing
• Volatile storage technology retaining data only during active power supply
• Through-hole compatible 28-pin DIP physical form factor

Applications

• Industrial control systems requiring non-volatile-like temporary storage
• Embedded microcontroller data buffering applications
• Legacy hardware maintenance and replacement scenarios

Procurement Notes

Verify the exact suffix designation against official Renesas documentation, as variations may indicate different temperature ranges or packaging types. Confirm current availability status, as this component family has faced discontinuation notices from the manufacturer. Ensure compatibility with existing PCB footprints and voltage levels before procurement. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a parallel SRAM interface is required for legacy system integration. Consider the 45ns access speed relative to system clock requirements. Evaluate the 28-PDIP package constraints for mechanical fit. Compare against newer serial interfaces if board space and pin count are critical factors. Verify that the 5V logic level matches the target system's I/O standards.

Part Context

This part belongs to the 7164 series of high-speed SRAMs produced by Renesas. The series typically includes variants with different access times and suffixes indicating specific environmental or packaging grades. These devices were widely used in computing and industrial equipment prior to the dominance of flash and DRAM technologies for similar capacities.

Replacement Considerations

Official substitutes include other members of the 7164 series such as the 7164L20TPG or 7164S25TPG, which offer faster access times but maintain the same pinout and package. Verify that any replacement maintains the 8Kx8 organization and 5V operating voltage. Check for updated datasheets regarding lead-free compliance if required by current regulations.