71V546S133PFG8

Overview

The Renesas Electronics Corporation 71V546S133PFG8 is a 4.5 Mbit synchronous Single Data Rate (SDR) Static Random Access Memory (SRAM). It features a parallel interface with a memory organization of 128K x 36 bits. The device operates at a clock frequency of 133 MHz and provides an access time of 4.2 ns. It requires a supply voltage range of 3.135 V to 3.465 V and functions within a commercial temperature range of 0°C to 70°C. The component is housed in a 100-pin Thin Quad Flat Package (TQFP) measuring 14x14 mm.

Feature Summary

• Supports high-speed data transfer via a 133 MHz synchronous SDR interface
• Eliminates dead bus cycles during read-to-write or write-to-read transitions
• Provides a wide 36-bit data bus for efficient system integration

Applications

• High-performance networking equipment
• Industrial control systems
• Computing hardware requiring fast cache memory

Procurement Notes

Verify the exact suffix configuration against official documentation, as variations exist between PFG and PFGI designations regarding moisture sensitivity levels and RoHS compliance status. Confirm that the specific lot matches the required operating temperature grade, as industrial variants may differ from commercial units. Ensure compatibility with existing PCB footprints for the 100-TQFP package before finalizing procurement orders.

Selection Notes

Select this component when a 36-bit data width is required for high-throughput applications. The 133 MHz speed rating suits systems needing rapid data access without complex asynchronous timing constraints. Consider the 100-TQFP package dimensions for board space limitations. Verify power supply stability within the specified 3.135 V to 3.465 V range to ensure reliable operation under all load conditions.

Part Context

This part belongs to the IDT 71V546 family of synchronous SRAMs. These devices are designed to replace asynchronous memories in high-speed digital systems. The family offers various speed grades and organizational options to meet diverse bandwidth requirements. The 71V546 series is widely used in telecommunications and computing infrastructure where deterministic latency is critical.

Replacement Considerations

Check for direct pin-compatible alternatives such as the 71V546S100PFG8 if lower speed is acceptable. Verify functional equivalence with other 128K x 36 synchronous SRAMs from different manufacturers. Ensure any substitute supports the same 3.3 V core voltage and 100-TQFP footprint.