71V547S80PFG

Overview

The IDT71V547S80PFG is a 3.3V Synchronous ZBT SRAM with a memory organization of 128K x 36 bits and a total capacity of 4.5 Mbit. It features an access time of 8 ns and supports a maximum clock frequency of 125 MHz. The device utilizes a parallel interface and operates within a supply voltage range of 3.135 V to 3.465 V. It is housed in a 100-pin TQFP package measuring 14 x 20 mm. The component supports flow-through outputs and includes a burst counter for sequential data access.

Feature Summary

• Supports high-performance system speeds through synchronous operation with zero wait states between read and write cycles.
• Features internally synchronized output buffer enable, eliminating the need for external control of the output enable pin.
• Utilizes a single R/W control pin to manage both read and write operations, simplifying interface logic.
• Includes individual byte write control capabilities for selective data modification within the memory array.

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in network routers and switches
• Signal processing systems requiring low-latency data access
• Industrial automation controllers with strict timing requirements

Procurement Notes

Verify the exact suffix configuration against the manufacturer's current datasheet, as variations such as PFI or PFGI8 may indicate different packaging or environmental compliance standards. Confirm availability status, as this component series has faced discontinuation notices from Renesas Electronics. Ensure that the specific part number matches the required lead time and moisture sensitivity level for your assembly process.

Selection Notes

Select this component when a 36-bit wide synchronous memory interface is required for complex data paths. The 8 ns access time suits applications needing faster throughput than standard asynchronous SRAMs but where higher-cost dual-port devices are unnecessary. Consider the 100-pin TQFP footprint for PCB layout constraints and verify thermal dissipation capabilities for the operating temperature range specified in the official documentation.

Part Context

This device belongs to the IDT 71V547 family of Synchronous ZBT SRAMs, designed for high-density memory applications. The family typically includes variants with different access times and organizations, such as 256K x 36 configurations. Integrated Device Technology was acquired by Renesas Electronics, which continues to support and manage the product lifecycle for these legacy high-performance memory solutions.

Replacement Considerations

Public confirmed substitute part numbers include IDT71V547S100PFGI8 and IDT71V547S80PFGI8. Verify pin compatibility and electrical specifications before substitution, as suffix changes may affect packaging or RoHS compliance status.