71V3556SA166BGG8

Overview

The IDT71V3556SA166BGG8 is a 4.5Mb (128K x 36) synchronous SRAM manufactured by Renesas Electronics Corporation. It operates with a maximum clock frequency of 166 MHz and features a 3.5 ns access time. The device utilizes a parallel interface and requires a supply voltage between 3.135V and 3.465V. It is housed in a 119-pin PBGA package measuring 14x22 mm. The component supports surface mount installation and functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Zero Bus Turnaround (ZBT) technology eliminates dead cycles between read and write operations
• Fully pipelined architecture with internally synchronized output buffer enable
• Supports four-word burst capability for interleaved or linear data transfer
• Includes individual byte write control for precise data masking

Applications

• High-performance processor secondary cache systems
• Network routing and switching equipment memory buffers
• Telecommunications infrastructure signal processing
• Industrial automation control system data storage

Procurement Notes

Verify the specific suffix BGG8 against official Renesas documentation to confirm the 119-pin PBGA package configuration. Confirm that the 166 MHz speed grade matches the target design requirements. Check current manufacturing status as this part may be subject to end-of-life notices. Ensure compatibility with 3.3V core and 2.5V I/O power supplies during integration.

Selection Notes

Select this component when zero bus turnaround latency is critical for system throughput. The 128K x 36 organization suits applications requiring wide data paths. Verify that the PCB layout supports the 119-pin PBGA footprint. Consider thermal management capabilities within the 0°C to 70°C operating range for the intended environment.

Part Context

This device belongs to the 71V3556 family of ZBT synchronous SRAMs. It shares architectural similarities with other members like the 71V3556S series but differs in package and speed grades. The family is designed for high-speed data buffering where traditional synchronous SRAMs suffer from turnaround delays.

Replacement Considerations

IDT71V3556SA166BQGI8 is listed as a similar alternative.