71V3556S166PFGI

Overview

The IDT71V3556S166PFGI is a 4.5 Mbit Synchronous Zero Bus Turnaround (ZBT) SRAM organized as 128K words by 36 bits. It operates with a 3.3V power supply and features 3.3V I/O levels. The device supports a maximum clock frequency of 166 MHz, providing a typical access time of 3.5 ns. It utilizes a pipelined architecture with burst counter capabilities for efficient data transfer.

Feature Summary

• Supports high-performance system speeds up to 166 MHz with zero bus turnaround between read and write cycles
• Features internally synchronized output buffer enable to eliminate external OE control requirements
• Utilizes positive clock-edge triggered registers for address, data, and control signals in fully pipelined applications
• Provides individual byte write control for precise data masking during write operations

Applications

• High-speed cache memory systems requiring low latency
• Network routing equipment and telecommunications infrastructure
• Industrial automation controllers demanding reliable synchronous memory
• Test and measurement instruments utilizing fast data acquisition

Procurement Notes

Verify the specific suffix PFGI against the manufacturer's current datasheet to confirm package dimensions and pinout compatibility. Ensure the voltage specifications align with your system's 3.3V logic levels. Check for RoHS compliance status if environmental regulations apply to your manufacturing process. Confirm availability through authorized distributors as this component may be subject to lifecycle changes.

Selection Notes

Select this component when a 36-bit wide interface is required for parallel data processing. The ZBT technology offers superior throughput compared to traditional asynchronous SRAMs without the complexity of true synchronous DRAM interfaces. Consider the 166 MHz speed grade if system timing allows for higher performance alternatives like the 200 MHz variants within the same family.

Part Context

This part belongs to the IDT 71V3556 series of Synchronous ZBT SRAMs, designed for high-density memory applications. The series includes various speed grades and package options, such as BGA and TQFP, to accommodate different board space and thermal requirements. The 71V3556S variant specifically denotes the standard temperature range and synchronous operation mode.

Replacement Considerations

The IDT71V3556SA166BQGI8 is listed as a similar replacement option. Verify pin compatibility and electrical characteristics before substitution. Other family members like the 71V3556XSA series offer alternative speed grades or package types.