71V2556S100PF

Overview

The IDT 71V2556S100PF is a 3.3V synchronous Zero Bus Turnaround (ZBT) SRAM organized as 128K x 36, providing a total memory density of 4.5 Mbit. It operates with a maximum clock frequency of 100 MHz and features a typical access time of 5 ns. The device utilizes a 3.3V core supply voltage and supports 3.3V I/O levels. It is housed in a 100-pin Thin Quad Flatpack (TQFP) package.

Feature Summary

• Zero Bus Turnaround architecture eliminates dead cycles during bus turnaround between read and write operations
• Fully pipelined positive clock-edge triggered address, data, and control signal registers
• Single R/W control pin simplifies interface logic requirements
• Internally synchronized output buffer enable removes the need for external OE control

Applications

• High-performance embedded systems requiring fast memory turnaround
• Network infrastructure equipment utilizing synchronous SRAM interfaces
• Industrial control applications needing reliable high-speed data buffering

Procurement Notes

Verify the specific suffix 'PF' against official Renesas or IDT documentation to confirm the exact package type and temperature range. Ensure compatibility with system voltage requirements, specifically the 3.3V core and I/O specifications. Confirm availability status as this component family may have been discontinued or superseded by newer revisions.

Selection Notes

Select this component when a 128K x 36 organization is required with synchronous ZBT performance at 100 MHz. It is suitable for designs needing reduced bus turnaround latency compared to standard asynchronous SRAMs. Consider alternative speeds like 133 MHz or 150 MHz if higher throughput is necessary within the same package footprint.

Part Context

This part belongs to the 71V2556 series of 3.3V Synchronous ZBT SRAMs manufactured by Integrated Device Technology (IDT), now part of Renesas Electronics. The series offers various speed grades and packaging options, including TQFP and BGA, designed for high-speed parallel memory applications.

Replacement Considerations

Check for direct substitutes such as the 71V2556S133PFGI or 71V2556S150PFGI for faster clock speeds in the same package. Verify pinout compatibility before replacing with other ZBT SRAM families.