72245LB15TFI8

Overview

The Renesas Electronics Corporation 72245LB15TFI8 is a synchronous FIFO memory device belonging to the 72245 series. It features an organization of 4K x 18 bits, providing a total storage capacity of 72 kilobits. The component supports unidirectional data transfer with a maximum data rate of 66.7 MHz and a typical access time of 10 ns. It operates within a supply voltage range of 4.5 V to 5.5 V and draws a maximum supply current of 60 mA. The device is housed in a 64-pin TQFP package with dimensions of 10x10 mm and is rated for an industrial operating temperature range from -40°C to +85°C.

Feature Summary

• Synchronous operation with independent read and write clock controls
• Programmable status flags including empty, full, almost-empty, and almost-full indicators
• First Word Fall Through (FWFT) timing capability for reduced latency
• Bidirectional data bus architecture supporting flexible system integration

Applications

• Data buffering in optical disk controllers
• Local Area Network (LAN) interface buffering
• Interprocessor communication links
• High-speed serial-to-parallel data conversion systems

Procurement Notes

Verify the exact suffix configuration against official Renesas documentation, as variations such as TFI versus TF8 may indicate differences in packaging or moisture sensitivity levels. Confirm RoHS compliance status and lead-free availability directly with the manufacturer or authorized distributors, as older revisions may not meet current environmental standards. Ensure the selected variant matches the required operating temperature grade and package type for your specific design constraints.

Selection Notes

Select this component when a 4K x 18 synchronous FIFO with bidirectional data paths is required. It is suitable for applications needing programmable flags and FWFT support. Compare against the 72V245 series if 3.3V operation is necessary, as the 72245 series is designed for 5V logic levels. Ensure the system design accommodates the 64-pin TQFP footprint and the specified 4.5V to 5.5V power supply requirements.

Part Context

The 72245LB15TFI8 is part of the broader 72245 family of synchronous FIFOs manufactured by Renesas Electronics. This family includes variants with different access times, voltage levels, and package options. The 72245 series is widely used in high-performance digital systems requiring reliable data buffering between asynchronous or synchronous domains. Related parts include the 72205 and 72225 models, which offer different memory depths while maintaining similar interface characteristics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult official Renesas EOL notices or technical resources for approved pin-compatible alternatives or functional equivalents.