71V546XS133PFGI

Overview

The IDT71V546XS133PFGI is a 3.3V Synchronous Zero Bus Turnaround (ZBT) SRAM with a memory organization of 128K x 36, providing a total capacity of 4.5 Mbit. It operates at a maximum clock frequency of 133 MHz and features a typical access time of 4.2 ns. The device utilizes a 100-pin Plastic Quad Flatpack (PQFP) package. It supports 2.5V I/O levels and includes pipelined outputs with a burst counter for high-performance data transfer.

Feature Summary

• Zero Bus Turnaround technology eliminates dead cycles between read and write operations to maximize bus throughput.
• Fully pipelined architecture with positive clock-edge triggered registers for address, data, and control signals.
• Supports 4-word burst capabilities in either interleaved or linear modes for efficient data streaming.
• Includes individual byte write controls and multiple chip enables for flexible system expansion.

Applications

• High-speed networking equipment requiring low-latency buffering
• Telecommunications systems utilizing synchronous data processing
• Industrial automation controllers needing fast random access memory

Procurement Notes

Verify the specific suffix 'XS' against official Renesas or IDT documentation to confirm it denotes the extended temperature range variant, as standard 'S' suffixes typically indicate commercial ranges. Ensure the 100-pin PQFP package matches the target PCB footprint. Confirm RoHS compliance status for the specific manufacturing lot if required by regulatory standards.

Selection Notes

Select this component when system design requires a 36-bit wide data interface with synchronous timing constraints. It is suitable for applications demanding high bandwidth without the complexity of dual-port architectures. Consider the 133 MHz speed grade if higher performance than 100 MHz variants is necessary while maintaining ZBT efficiency.

Part Context

This part belongs to the IDT 71V2546/71V546 family of 3.3V Synchronous ZBT SRAMs. These devices are designed to replace asynchronous SRAMs in high-speed parallel interfaces, offering improved performance through pipelining and zero wait-state transitions between read and write cycles.

Replacement Considerations

The IDT71V546S133PFGI is a compatible alternative within the same family, differing primarily in operating temperature range rather than electrical function. Verify pin compatibility and voltage specifications before substitution.