71V3559S80PFG

Overview

The IDT71V3559S80PFG is a Synchronous Zero-Bus Turnaround (ZBT) Static Random Access Memory (SRAM) integrated circuit manufactured by Renesas Electronics. It features a memory organization of 256K x 18 bits, providing a total capacity of 4.5 Megabits. The device utilizes a parallel interface with an access time of 8 nanoseconds and supports a maximum clock frequency of 100 MHz. It operates within a supply voltage range of 3.135V to 3.465V and is designed for surface mount installation in a 100-TQFP package measuring 14x14 mm. The component functions reliably across an ambient temperature range of -40°C to +85°C.

Feature Summary

• Supports synchronous operation with zero-bus turnaround technology to maximize data throughput efficiency.
• Features pipelined architecture with single-cycle deselect capability for flexible control.
• Includes a burst counter and pipelined outputs to optimize high-speed data transfer sequences.

Applications

• High-performance networking equipment requiring fast buffer memory
• Telecommunications systems utilizing synchronous data processing
• Industrial automation controllers needing rapid random access storage

Procurement Notes

Verify the specific manufacturer source, as this part number may be listed under Renesas Electronics following corporate acquisitions. Confirm current availability status, as many variants in this series are marked as obsolete or end-of-life. Ensure the package type matches the 100-TQFP specification and validate that the 8 ns access time meets system timing requirements before ordering.

Selection Notes

Select this component when a wide data bus width of 18 bits is required alongside synchronous interface speeds. Compare against other ZBT SRAM families if lower power consumption or different pin counts are necessary. Ensure the design accommodates the 3.3V I/O levels and verify that the 100-pin TQFP footprint fits the PCB layout constraints.

Part Context

This device belongs to the IDT 71V3559 family of Synchronous ZBT SRAMs. The family includes various speed grades and package options, such as the 85 ns variant and BGA packages. These components are engineered for applications demanding high bandwidth and low latency without the complexity of asynchronous logic.

Replacement Considerations

Check for direct substitutes within the same 71V3559 series, such as the IDT71V3559S85PFGI, which offers a slower 8.5 ns access time but maintains similar electrical characteristics. Verify pin compatibility and voltage specifications before substituting.