71V65603S100PFI

Overview

The IDT71V65603S100PFI is a 9Mb (256K x 36) Synchronous ZBT SRAM manufactured by Renesas Electronics Corporation. It operates with a clock frequency of 100 MHz and features a 5 ns access time. The device utilizes a 100-TQFP (14x14) package and supports a supply voltage range of 3.135V to 3.465V. It is designed for parallel interface applications within an operating temperature range of -40°C to 85°C.

Feature Summary

• Supports high-performance system speeds through synchronous operation at 100 MHz.
• Features Zero Bus Turnaround (ZBT) technology to eliminate dead cycles between write and read operations.
• Includes internally synchronized output buffer enable to simplify control logic requirements.

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in network routers and switches
• Digital signal processing systems requiring low-latency access

Procurement Notes

Verify the manufacturer designation, as this component is listed under Renesas Electronics Corporation despite the IDT brand origin. Confirm the specific suffix PFI corresponds to the 100-TQFP package and industrial temperature range. Check RoHS compliance status and ensure the part number matches current datasheet revisions to avoid obsolete variants.

Selection Notes

Select this component when a 256K x 36 organization is required with 5 ns latency. Ensure the design accommodates the 3.3V core voltage and 2.5V I/O supply if applicable per specific sub-variants. Verify that the 100-pin TQFP footprint fits the PCB layout constraints and thermal management requirements for the target operating environment.

Part Context

This part belongs to the IDT71V65603/Z family of Synchronous ZBT SRAMs. These devices are engineered for high-throughput applications where bus turnaround time is critical. The family typically includes variations in speed grades and packaging options, such as BGA configurations, while maintaining the same core memory architecture and pinout compatibility.

Replacement Considerations

Public confirmed substitute: IS61NLP25636A-200TQLI from ISSI. Note that this alternative has a different access time specification and may require timing verification.