71V3556SA166BQGI8

Overview

The IDT71V3556SA166BQGI8 is a synchronous single data rate zero bus turnaround SRAM manufactured by Renesas Electronics Corporation. It features a storage capacity of 4.5 Mbit organized as 128K x 36 bits. The device supports parallel interface operation with a maximum clock frequency of 166 MHz and an access time of 3.5 ns. It operates within a supply voltage range of 3.135 V to 3.465 V and is housed in a 165-CABGA package measuring 13x15 mm.

Feature Summary

• Synchronous Single Data Rate (SDR) architecture for high-speed data transfer
• Zero Bus Turnaround (ZBT) technology to minimize wait states during read cycles
• Parallel interface supporting burst read operations
• Surface-mount CABGA packaging for compact board integration

Applications

• High-performance embedded systems requiring fast memory access
• Network infrastructure equipment such as routers and switches
• Industrial control systems demanding reliable volatile storage
• Telecommunications base stations and signal processing units

Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm moisture sensitivity level handling requirements before assembly. Check for recent product change notices regarding labeling or substrate modifications. Ensure compatibility with existing PCB footprints and soldering profiles. Validate replacement options if current stock is unavailable.

Selection Notes

Select this component for applications requiring 36-bit wide data paths at high clock speeds. Consider the 166 MHz performance limit when designing system clocks. Evaluate power consumption specifications against thermal management capabilities. Compare pinout compatibility with alternative packages if space constraints exist. Assess long-term availability risks associated with discontinued manufacturing status.

Part Context

This part belongs to the Renesas 71V3556 series of synchronous SRAMs, designed for high-throughput data buffering. It succeeds earlier IDT-branded variants under the Renesas portfolio. The device utilizes advanced CMOS technology to achieve low power consumption while maintaining high speed. It is part of a broader family offering various speed grades and package options for diverse system requirements.

Replacement Considerations

The 71V3556SA166BGI8 is listed as a similar substitute, differing primarily in package type (PBGA vs CABGA). Verify mechanical fit and electrical equivalence before substitution. Other potential replacements include parts from ISSI with matching organization and speed characteristics.