71V3557S85PFG

Overview

The IDT71V3557S85PFG is a Synchronous ZBT SRAM IC with a storage capacity of 4.5Mb, organized as 128K x 36 bits. It features a parallel interface and an access time of 8.5 ns. The device operates on a 3.135V to 3.465V power supply and supports surface mount installation in a 100-LQFP package (100-TQFP 14x14). It functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Synchronous Zero Bus Turnaround (ZBT) technology eliminates dead cycles between write and read operations.
• Single R/W control pin simplifies interface logic by combining read and write signals.
• Internally synchronized output buffer enable removes the need for external OE control.

Applications

• High-performance embedded systems requiring fast memory access
• Network infrastructure equipment
• Industrial automation controllers

Procurement Notes

Verify the specific suffix 'PFG' against official Renesas documentation to confirm the 100-LQFP package and commercial temperature grade. Confirm RoHS compliance status as manufacturing sites and environmental declarations may vary across production batches and legacy part numbers.

Selection Notes

Select this component when a 36-bit data width is required for synchronous memory applications. Ensure the design accommodates the 3.3V I/O levels and the specific 100-pin LQFP footprint constraints. Verify that the system clock frequency aligns with the 8.5 ns access time specifications.

Part Context

This part belongs to the IDT 71V3557 family of Synchronous ZBT SRAMs. The manufacturer transitioned from Integrated Device Technology (IDT) to Renesas Electronics Corporation following corporate acquisitions. The product line is characterized by high-speed burst capabilities and low-power operation modes controlled by dedicated inputs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.