72V291L10PFG8

FIFOs Memory Overview

The 72V291L10PFG8 is a SuperSync synchronous FIFO memory device manufactured by Renesas Electronics. It features a storage organization of 128K words by 9 bits, operating on a single 3.3V power supply. The component supports independent read and write clocks, allowing simultaneous data transfer operations. Key electrical specifications include a maximum clock frequency of 100 MHz and an access time of 6.5 ns. It is housed in a 64-pin TQFP package with lead-free construction.

FIFOs Memory Feature Summary

• SuperSync architecture with fixed low first word data latency
• Independent read and write clock inputs for simultaneous operation
• Retransmit capability with consistent data latency
• Programmable status flags for empty, full, half-full, almost-empty, and almost-full conditions

FIFOs Memory Applications

• High-speed data buffering in telecommunications systems
• Clock domain crossing interfaces in digital logic designs
• Data acquisition system temporary storage
• Network equipment packet buffering

FIFOs Memory Procurement Notes

This specific part number is officially listed as obsolete and discontinued by the manufacturer. Availability is restricted to remaining stock or secondary market sources. Verify RoHS compliance status and moisture sensitivity level (MSL 3) before procurement. Confirm package integrity and check for product change notices related to labeling or pinout modifications prior to integration into new designs.

FIFOs Memory Selection Notes

Select this component for applications requiring 3.3V operation with 128K x 9 depth. It serves as a functional replacement for older 5V 72291 devices while offering lower power consumption. Ensure design compatibility with independent clock domains and verify that the 6.5 ns access time meets system timing requirements. Consider the 64-pin TQFP footprint for PCB layout constraints.

FIFOs Memory Part Context

The 72V291 series belongs to Renesas' SuperSync FIFO family, designed for high-performance memory buffering. This line eliminates variable clock cycle counting delays found in previous generations, providing fixed latency. The 72V291L10PFG8 variant specifically denotes the lead-free, reel-packaged version within the 64-pin TQFP form factor, targeting industrial and commercial temperature ranges.

FIFOs Memory Replacement Considerations

Officially confirmed substitute part numbers include IDT72V291L10PFG8 and IDT72V291L10PFG. These variants share identical pinouts and functionality. Verify that any alternative selection maintains the 128K x 9 organization and 3.3V supply requirement to ensure direct compatibility.