72255LA20TFI8

Overview

The Renesas 72255LA20TFI8 is a synchronous FIFO memory device with a storage capacity of 144K bits, organized as 8K words by 18 bits. It operates within a supply voltage range of 3 V to 3.6 V and supports data rates up to 50 MHz. The component features a 10 ns access time and is housed in a 64-pin TQFP package measuring 14x14 mm. Designed for industrial applications, it functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Supports independent read and write clocks allowing simultaneous operations
• Features programmable Almost-Empty and Almost-Full status flags
• Includes retransmit operation capability with fixed low first word data latency
• Provides auto power down functionality to minimize standby power consumption

Applications

• Data buffering in telecommunications systems
• Video signal processing and buffering
• Networking equipment interface management
• Interprocessor communication links

Procurement Notes

Verify the specific suffix configuration against official documentation to ensure correct package dimensions and electrical characteristics. Confirm RoHS compliance status as historical batches may vary. Check current availability as this component series has faced discontinuation notices. Validate moisture sensitivity level handling requirements during assembly. Ensure the supplier provides traceability for the manufacturing origin.

Selection Notes

Select this component when an 18-bit wide synchronous FIFO is required for 3.3V logic interfaces. It serves as a functional replacement for the 5V 72255 family while offering lower power consumption. Consider the 64-pin TQFP footprint for PCB layout compatibility. Verify that the 50 MHz maximum frequency meets system timing requirements. Evaluate the need for retransmit capabilities if data integrity is critical.

Part Context

This part belongs to the IDT 72V2x5 SuperSync FIFO family, designed for high-performance data buffering. It maintains pin compatibility with earlier generations while optimizing for 3.3V operation. The series is widely used in applications requiring reliable data flow control between asynchronous domains. Renesas continues to support legacy designs through this established product line.

Replacement Considerations

The 72V265LA15TFI8 offers similar functionality with increased depth but different speed characteristics. The 72V255LA20PF is a tray-packaged alternative with identical electrical specifications. Verify pinout compatibility before substituting these parts in existing designs.