71V3556S133PFGI

Overview

The IDT71V3556S133PFGI is a synchronous ZBT SRAM with a memory organization of 128K x 36, providing a total capacity of 4.5 Mbit. It operates at a maximum clock frequency of 133 MHz with a typical access time of 4.2 ns. The device utilizes a 3.3V I/O interface and is housed in a 100-pin TQFP package.

Feature Summary

• Supports high-performance system speeds through synchronous operation
• Features zero wait-state burst read capability for efficient data transfer
• Includes individually selectable byte write controls for flexible data handling

Applications

• High-speed networking equipment
• Telecommunications systems
• Industrial automation controllers

Procurement Notes

Verify the specific suffix PFGI to confirm the 100-pin TQFP package and lead-free status. Confirm RoHS compliance requirements as older batches may differ. Check current availability status as this component series has been subject to discontinuation notices by the manufacturer.

Selection Notes

Select this part when a 128K x 36 configuration is required for synchronous applications. Ensure the design supports 3.3V logic levels. Consider pin-compatible alternatives if different access times or package types are needed for space constraints.

Part Context

This component belongs to the IDT 71V3556 family of Synchronous Zero Bus Turnaround (ZBT) SRAMs. The family offers various speed grades and package options, including BGA and QFP variants, designed for high-throughput data buffering in complex digital systems.

Replacement Considerations

IDT71V3556S133PFGI8 is an alternative reel-packaged version of the same device. Verify pinout compatibility before substitution.