71V2546S100PFG

Overview

The IDT71V2546S100PFG is a 3.3V Synchronous 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 100 MHz with a typical access time of 5 ns. The device features a 2.5V I/O supply (VDDQ) and utilizes a 100-pin Thin Quad Flatpack (TQFP) package. It supports pipelined outputs and burst counter functionality for high-performance system applications.

Feature Summary

• ZBT technology eliminates dead cycles between read and write operations
• Internally synchronized output buffer enable removes external OE control requirements
• Single R/W control pin simplifies interface logic
• Positive clock-edge triggered registers support fully pipelined applications

Applications

• High-speed data buffering in network infrastructure equipment
• Cache memory implementation in embedded processing systems
• FIFO buffers in telecommunications signal processing
• Data storage in industrial automation controllers

Procurement Notes

Verify component authenticity through authorized Renesas Electronics channels due to discontinuation status. Confirm RoHS compliance version matches project requirements as multiple manufacturing sites were involved. Validate package marking against official datasheet specifications to prevent counterfeit substitution during procurement.

Selection Notes

Select this part for designs requiring synchronous ZBT performance with 100 MHz operation. Ensure voltage levels match the 3.3V core and 2.5V I/O specifications. Consider the 100-TQFP package constraints for PCB layout. Evaluate alternative speeds if higher throughput is needed, noting the device's specific timing characteristics.

Part Context

This component belongs to the IDT 71V2546 family of synchronous ZBT SRAMs. It shares architectural similarities with variants like the 71V2546S133BG but differs in speed grade and packaging. The product line was transitioned from IDT to Renesas Electronics, affecting documentation and support structures while maintaining functional compatibility within the series.

Replacement Considerations

The 71V2546S133PFG is a documented similar replacement offering higher speed performance. Verify pinout compatibility and electrical parameter alignment before substitution. Check for any minor differences in power consumption or timing margins that may impact system stability.