IDT71V3558S200BQ8

Memory IC Overview

The IDT71V3558S200BQ8 is a 4.5Mb (256K x 18) synchronous ZBT SRAM manufactured by Renesas Electronics Corporation. It operates at a clock frequency of 200 MHz with a 3.2 ns access time. The device utilizes a 165-CABGA package and supports a supply voltage range of 3.135V to 3.465V. Designed for high-performance parallel data transfer, it features pipelined outputs and an on-chip burst counter.

Memory IC Feature Summary

• Zero Bus Turnaround (ZBT) technology eliminates dead cycles between read and write operations.
• Pipelined architecture with internally synchronized output buffers for high-speed performance.
• On-chip burst counter supporting four-word linear or interleaved burst sequences.
• Individual byte write capability allows selective modification of specific data bytes.

Memory IC Applications

• High-speed data buffering in communication systems
• Cache memory for network routers and switches
• Digital signal processing applications requiring low latency

Memory IC Procurement Notes

Verify the component status as discontinued before procurement planning. Confirm that the 165-CABGA package dimensions match the target PCB footprint. Ensure power supply specifications align with the required 3.3V ±5% tolerance. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Memory IC Selection Notes

Select this model when system requirements demand 200 MHz operation with minimal bus turnaround latency. The 256K x 18 configuration suits applications needing wide data paths. Consider the 165-pin BGA package for high-density board layouts. Verify compatibility with existing synchronous logic controllers regarding setup and hold times.

Memory IC Part Context

This component belongs to the IDT71V3556/58 family of 3.3V Synchronous ZBT SRAMs. The 'S' suffix indicates the standard version without JTAG interface support, while 'BQ' denotes the 165-CABGA package. The '8' suffix typically specifies tape and reel packaging for automated assembly processes.

Memory IC Replacement Considerations

IDT71V3558XS133PF: Lower speed variant (133 MHz) in TQFP package. IDT71V3558SA100BQ8: Lower speed variant (100 MHz) with JTAG support in BGA package. Verify pinout and electrical characteristics before substitution.