71V3557S75PFG

Overview

The IDT71V3557S75PFG is a synchronous Zero Bus Turnaround (ZBT) SRAM with a memory organization of 128K x 36 bits, providing a total capacity of 4.5 Mbits. It operates on a single 3.3V power supply and features a maximum clock frequency of 133 MHz with a typical access time of 7.5 ns. The device utilizes a common I/O interface and is housed in a 100-pin Thin Quad Flat Package (TQFP).

Feature Summary

• Supports high-performance system speeds through synchronous operation without dead cycles between write and read operations.
• Features internally synchronized output buffer enable to eliminate the need for external Output Enable (OE) control.
• Includes a single Read/Write (R/W) control pin to simplify interface logic.

Applications

• High-speed cache memory systems
• Network infrastructure equipment
• Telecommunications base stations

Procurement Notes

Verify the specific suffix 'PFG' against the manufacturer's official datasheet to confirm package dimensions and lead material specifications. Ensure the operating temperature range aligns with the target application environment. Confirm RoHS compliance status as manufacturing sites may vary. Cross-reference the part number with current Renesas Electronics documentation to verify active status and any recent product change notices.

Selection Notes

Select this component when a 36-bit data width is required for wide-bus architectures. The ZBT technology is suitable for applications needing high throughput without the latency penalties of traditional asynchronous SRAMs. Verify that the 133 MHz clock speed meets the system timing requirements. Consider the 100-pin TQFP package constraints regarding PCB space and thermal management during the design phase.

Part Context

This device belongs to the IDT 71V3557 family of synchronous ZBT SRAMs. These components are designed to bridge the performance gap between fast asynchronous SRAMs and complex synchronous DRAMs. The family typically includes variants with different access times and package options, all sharing the same core synchronous architecture and 3.3V operation standard.

Replacement Considerations

Publicly confirmed substitute part numbers were not found in the provided source material. Consult the manufacturer's official obsolescence notices or cross-reference guides for potential replacements if this specific variant is discontinued.