IDT71V3558S200BQI

Memory IC Overview

The IDT71V3558S200BQI 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 uses a 165-CABGA package and supports a supply voltage range of 3.135V to 3.465V. It features pipelined outputs, a burst counter for four-word bursts, and individual byte write control.

Memory IC Feature Summary

• Zero Bus Turnaround architecture eliminates dead cycles between read and write operations
• Pipelined output buffers allow high-speed data transfer without external output enable control
• Internal burst counter supports linear or interleaved burst sequences
• Individual byte write enables provide granular data masking capabilities

Memory IC Applications

• High-performance system memory buffering
• Network router and switch packet buffering
• Telecommunications equipment cache memory
• Industrial automation controller data storage

Memory IC Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +85°C) as per manufacturer documentation. Confirm RoHS compliance status and lead-free specifications directly with the supplier, as legacy components may have varying environmental declarations. Ensure the 165-CABGA footprint matches the target PCB design constraints.

Memory IC Selection Notes

Select this component when zero bus turnaround latency is critical for system throughput. The 200 MHz speed grade suits applications requiring minimal wait states. Consider the 165-ball BGA package for high-density board layouts. Verify that the 3.3V I/O levels are compatible with the host processor interface requirements.

Memory IC Part Context

This part belongs to the IDT71V3556/58 family of 3.3V synchronous ZBT SRAMs. The '58' designation specifically refers to the 256K x 18 memory organization. The 'S' suffix typically denotes the standard commercial/industrial temperature range variant in this product line, while the 'I' suffix confirms industrial rating.

Memory IC Replacement Considerations

IDT71V3558SA100BQ8 offers identical memory organization but operates at 100 MHz. IDT71V3556S200BQI provides the same speed and package but with a 128K x 36 configuration.