72845LB15PF

FIFOs Memory Overview

The Renesas Electronics Corporation 72845LB15PF is a synchronous dual First-In-First-Out (FIFO) memory device. It integrates two independent 4K x 18 FIFOs within a single package, providing a total storage capacity of 144K bits. The component supports bidirectional data transfer with a maximum access time of 10 ns and operates at a data rate of 66.7 MHz. It functions on a supply voltage range of 4.5 V to 5.5 V and is housed in a 128-TQFP surface-mount package.

FIFOs Memory Feature Summary

• Integrates two independent 4K x 18 FIFOs in a single package for dual-channel buffering
• Supports both single-clock and asynchronous dual-clock operation modes
• Features programmable status flags for full and empty conditions
• Includes First Word Fall Through (FWFT) capability for immediate data availability

FIFOs Memory Applications

• Optical disk controllers
• Local area networks (LANs)
• Interprocessor communication systems

FIFOs Memory Procurement Notes

Verify the current lifecycle status as the component is listed as obsolete or end-of-life by the manufacturer. Confirm RoHS compliance requirements, as this specific part number may not meet current environmental standards. Ensure that the 128-TQFP package dimensions and pinout are compatible with existing PCB footprints before finalizing procurement plans.

FIFOs Memory Selection Notes

Select this component when designing systems requiring simultaneous buffering for two independent data streams with 18-bit word widths. It is suitable for applications needing high-speed synchronous data handling with flexible clocking options. Consider the 10 ns access time and 144K total depth against system throughput requirements.

FIFOs Memory Part Context

This device belongs to the Renesas 7200 series of high-performance FIFO memories. It is functionally equivalent to two separate 72245 FIFO units combined into one integrated circuit. The series is designed for robust data buffering in digital signal processing and communication infrastructure applications.

FIFOs Memory Replacement Considerations

IDT72845LB15PF is an alias for this component. Verify compatibility with other 72845 series variants if different access times or packaging options are required.