71V3558S133PFGI

Overview

The IDT71V3558S133PFGI is a 4.5 Mbit synchronous ZBT SRAM with a 256K x 18 organization, operating at 133 MHz with 4.2 ns access time. It features a 100-TQFP package and supports 3.3V I/O with pipelined outputs.

Feature Summary

• Supports high-performance system speeds with zero wait states between read and write cycles
• Features internally synchronized output buffer enable to eliminate external OE control requirements
• Utilizes positive clock-edge triggered registers for fully pipelined address and data operations

Applications

• High-speed networking equipment requiring low-latency buffering
• Telecommunications systems utilizing burst counter capabilities
• Industrial control applications needing reliable synchronous memory interfaces

Procurement Notes

Verify the exact suffix configuration against official Renesas documentation to ensure compatibility with specific voltage and temperature grades. Confirm RoHS status as legacy parts may have varying compliance levels. Check for active obsolescence notices or lifecycle changes before finalizing procurement plans.

Selection Notes

Select this component when a 256K x 18 word depth is required alongside strict 133 MHz timing constraints. Ensure the design accommodates the 100-pin TQFP footprint and 3.3V logic levels. Consider alternative packages like BGA if board space is limited but electrical characteristics remain identical.

Part Context

This device belongs to the IDT 71V3558 family of 3.3V Synchronous ZBT SRAMs. The family includes variants with different access times and packaging options, such as the 71V3558XS series for extended temperatures or the 71V3556 series for 36-bit widths.

Replacement Considerations

Direct substitutes include IDT71V3558XS133PF and IDT71V3558XSA133BGGI8. Verify pinout compatibility and thermal specifications when transitioning between TQFP and BGA packages within the same functional family.