71V2556SA133BGI

Overview

The IDT 71V2556SA133BGI is a 4.5 Mbit synchronous ZBT SRAM organized as 128K x 36. It operates with a maximum clock frequency of 133 MHz and features a 4.2 ns access time. The device utilizes a parallel interface and supports a supply voltage range of 3.135 V to 3.465 V. It is housed in a 119-PBGA package and functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Eliminates dead bus cycles during read-to-write or write-to-read transitions using Zero Bus Turnaround (ZBT) technology.
• Features internally synchronized output buffer enable, removing the need for external control of the Output Enable pin.
• Supports fully pipelined applications through positive clock-edge triggered address, data, and control signal registers.

Applications

• High-performance system cache memory
• Buffering in telecommunications equipment
• Network infrastructure storage

Procurement Notes

Verify component authenticity due to discontinuation status. Confirm RoHS compliance and moisture sensitivity level prior to assembly. Check for lead-free alternatives if environmental regulations require it. Ensure PCB footprint matches the 119-PBGA specification exactly.

Selection Notes

Select this part for designs requiring high-speed synchronous memory with minimal turnaround latency. Compare against other 128K x 36 configurations if different I/O voltages or package types are needed. Consider the 133 MHz speed grade relative to system clock requirements.

Part Context

This component belongs to the IDT 71V2556 series of 3.3V Synchronous ZBT SRAMs. It shares architectural similarities with other members like the 71V2556SA100BGI but offers higher speed performance. The series is designed for applications demanding fast data throughput without bus turnaround delays.

Replacement Considerations

Public confirmed substitute part numbers: IDT71V2556SA133BGG, 71V2556SA133BGG.