71V3556S133PFG

Memory IC Overview

The IDT71V3556S133PFG is a Synchronous Zero Bus Turnaround (ZBT) SRAM with a memory organization of 128K x 36 bits, providing a total capacity of 4.5 Mbits. It operates at a maximum clock frequency of 133 MHz with a typical access time of 4.2 ns. The device utilizes a 3.3V I/O interface and is housed in a 100-pin Thin Quad Flat Package (TQFP).

Memory IC Feature Summary

• Supports high-performance system speeds through synchronous operation.
• Eliminates dead cycles between write and read operations via ZBT technology.
• Features internally synchronized output buffer enable to simplify control logic.

Memory IC Applications

• High-speed data buffering in telecommunications equipment.
• Cache memory implementation in network routers and switches.
• Data storage in industrial automation control systems.

Memory IC Procurement Notes

Verify the specific suffix 'PFG' corresponds to the 100-pin TQFP package variant. Confirm RoHS compliance status for the specific manufacturing lot. Ensure the operating voltage range matches the 3.3V requirement. Check for end-of-life notices as this component may be superseded by newer Renesas products.

Memory IC Selection Notes

Select this part when a 128K x 36 configuration is required for synchronous applications. It is suitable for designs needing fast turnaround times without complex bus control. Compare against the 71V3558 series if a 256K x 18 organization better fits the board layout constraints.

Memory IC Part Context

This component belongs to the IDT 71V3556/58 family of 3.3V Synchronous ZBT SRAMs. The family includes variants with different access times and package options, such as the 71V3556SA and 71V3556XS series. These devices are designed for pipelined architectures requiring single-cycle deselect capabilities.

Memory IC Replacement Considerations

Check for direct pin-compatible replacements within the same family, such as the 71V3556SA133PFG. Verify if the Renesas-branded equivalents maintain identical electrical specifications and pinouts before substitution.