71V3556S166PFG

Overview

The Renesas Electronics Corporation 71V3556S166PFG is a synchronous static random-access memory (SRAM) device organized as 256K x 18, providing a total storage capacity of 4.5 Mbit. It operates with a maximum clock frequency of 133 MHz and features an access time of 4.2 ns. The component utilizes a parallel interface and requires a supply voltage ranging from 3.135 V to 3.465 V. It is housed in a 100-TQFP surface-mount package with dimensions of 14x14 mm. The device supports an operating temperature range from 0°C to +70°C.

Feature Summary

• Supports synchronous single data rate (SDR) operations for high-speed data transfer
• Designed to eliminate dead bus cycles during read-to-write or write-to-read transitions
• Features pipelined architecture for improved throughput efficiency

Applications

• High-performance computing systems requiring fast memory access
• Network infrastructure equipment utilizing parallel SRAM interfaces
• Industrial control applications within standard commercial temperature ranges

Procurement Notes

Verify the specific suffix designation against official Renesas documentation to confirm pinout compatibility and electrical specifications. Confirm current manufacturing status as this part number may be subject to discontinuation notices. Ensure that the selected variant matches the required package type and temperature grade for your specific application environment before finalizing procurement decisions.

Selection Notes

Select this component when a 256K x 18 organization is required for synchronous memory applications. Consider the 100-pin TQFP package constraints for board layout and thermal management. Evaluate the 133 MHz performance limit against system clock requirements. Verify that the 3.3V core voltage aligns with the target platform's power distribution network design.

Part Context

This device belongs to the Renesas 71V3556 series of synchronous SRAMs. It shares architectural similarities with other members of the family but differs in speed grade and organization. The 71V3556S166PFG specifically targets applications needing moderate speed with a 18-bit data width, distinguishing it from wider or narrower variants in the product line.

Replacement Considerations

Official substitutes include the 71V3558S166PFG and 71V3558S166PFGI. These alternatives offer similar synchronous SRAM functionality but may differ in speed grades or organizational parameters. Verify pin compatibility and electrical characteristics before implementing any replacement.