71V3558S100PFGI

Overview

The IDT71V3558S100PFGI is a 4.5 Mbit (256K x 18) synchronous ZBT SRAM manufactured by Renesas Electronics Corporation, formerly IDT. It operates with a 3.3V power supply and features a 100 MHz clock frequency with a 5 ns access time. The device utilizes a parallel interface and is housed in a 100-TQFP package measuring 14x14 mm. It supports single data rate operation and includes pipelined outputs.

Feature Summary

• Supports high-performance system speeds through zero wait state burst operations
• Eliminates dead bus cycles between read and write transitions
• Features internally synchronized output buffer enable for simplified control

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in network routers and switches
• Digital signal processing systems requiring fast random access

Procurement Notes

Verify the manufacturer status as this component may be discontinued or superseded by newer revisions from Renesas Electronics. Confirm RoHS compliance requirements against specific project standards, as older IDT batches may not meet current environmental regulations. Ensure the 100-TQFP package dimensions match the target PCB footprint exactly before finalizing procurement orders.

Selection Notes

Select this part when a 256K x 18 organization is required with synchronous ZBT performance at 100 MHz. It is suitable for designs needing 3.3V I/O levels without external level shifting. Consider alternative packages like BGA if space constraints preclude the use of the TQFP form factor within the same family.

Part Context

This component belongs to the IDT 71V3556/58 series of 3.3V Synchronous ZBT SRAMs. The series offers various memory organizations including 128K x 36 and 256K x 18 configurations. These devices are designed to provide high-density memory solutions with low latency for demanding embedded applications.

Replacement Considerations

Check for IDT71V3558S100PFI as a potential pin-compatible alternative within the same package type. Verify electrical specifications against IDT71V3558SA100BQ8 if a BGA package is acceptable for the design.