71V2556S166PFG

Overview

The IDT 71V2556S166PFG is a 3.3V Synchronous ZBT SRAM organized as 128K x 36, featuring a 100-pin TQFP package with 0.65mm pitch. It operates at a maximum clock frequency of 166 MHz with a 3.8 ns access time. The device utilizes a 3.3V core supply and 2.5V I/O voltage, supporting pipelined outputs and burst counter functionality.

Feature Summary

• Eliminates dead bus cycles during read-to-write or write-to-read transitions
• Supports high-speed system performance via synchronous ZBT architecture
• Features internally synchronized output buffer enable for simplified control

Applications

• High-performance embedded systems requiring fast data buffering
• Network infrastructure equipment demanding low-latency memory access
• Industrial automation controllers utilizing synchronous logic interfaces

Procurement Notes

Verify the specific speed grade suffix against the manufacturer's current datasheet to ensure compatibility with the required 166 MHz operation. Confirm that the 100-pin TQFP package dimensions match the target PCB footprint. Check for lead-free compliance status if environmental regulations apply to the final assembly process.

Selection Notes

Select this component when a 3.3V core voltage is required alongside 2.5V I/O levels for mixed-voltage system designs. The 128K x 36 organization suits applications needing wide data paths without excessive pin counts. Ensure the design supports the necessary clocking requirements for synchronous ZBT operation.

Part Context

This part belongs to the IDT 71V2556 family of 3.3V Synchronous ZBT SRAMs. It shares architectural similarities with other members like the 71V2556S150PFGI but offers higher speed performance. The family is designed for applications requiring high bandwidth and minimal wait states in synchronous environments.

Replacement Considerations

The 71V2556S150PFGI is a documented slower-speed alternative within the same package and organization. Verify electrical compatibility before substitution, as clock frequency differences may impact system timing.