71V3556SA166BG

Overview

The Renesas Electronics Corporation 71V3556SA166BG is a 4.5 Mbit (128K x 36) synchronous pipelined SRAM utilizing Zero Bus Turnaround (ZBT) technology. It operates with a 3.3V core supply and features a 166 MHz clock frequency with a 3.5 ns access time. The device employs a parallel interface and is housed in a 119-pin PBGA package measuring 14x22 mm.

Feature Summary

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

Applications

• High-speed data buffering in network infrastructure equipment
• Cache memory implementation in telecommunications systems
• Data storage within industrial automation controllers
• Buffering in embedded computing platforms requiring low latency

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific packaging variations such as tray quantities. Ensure the voltage supply matches the specified 3.135V to 3.465V range during integration testing.

Selection Notes

Select this component when ZBT performance is required to maximize bus throughput without additional wait states. The 128K x 36 organization suits wide-data-path applications. Verify that the 119-pin BGA footprint aligns with existing PCB layout constraints and thermal management capabilities.

Part Context

This part belongs to the 71V3556 family of synchronous SRAMs designed for high-performance embedded applications. It shares architectural similarities with other ZBT devices but offers specific speed grades and package options tailored for dense board layouts and high-frequency operation requirements.

Replacement Considerations

Potential substitutes include IDT71V3556SA166BGGI and IDT71V3556S166BQG. Verify pin compatibility and electrical specifications before substitution.