72131L35P

Overview

The Renesas 72131L35P is an asynchronous FIFO memory integrated circuit manufactured by Renesas Electronics Corporation. It features a storage capacity of 18K bits, organized as 2048 words by 9 bits (2K x 9). The device supports bidirectional data transfer with a maximum access time of 35 nanoseconds. It operates within a supply voltage range of 4.5 V to 5.5 V and is housed in a 28-pin PDIP package.

Feature Summary

• Asynchronous operation for independent clock domains
• Bidirectional data flow capability
• Standard TTL-compatible logic levels

Applications

• Data buffering between microprocessors and peripherals
• Interface bridging for serial-to-parallel conversion
• Temporary storage in high-speed digital signal processing chains

Procurement Notes

Verify component authenticity through authorized distributors due to obsolete status. Confirm RoHS compliance requirements against specific project standards, as older batches may not meet current environmental directives. Validate package integrity upon receipt to ensure pin alignment matches the 28-DIP specification before soldering.

Selection Notes

Select this component when bidirectional asynchronous buffering is required for 9-bit wide data paths. Ensure system timing allows for 35ns access latency. Compare against unidirectional alternatives if directionality constraints exist. Verify voltage compatibility with existing 5V logic families to prevent interface mismatches.

Part Context

This part belongs to the Renesas 7200 series of FIFO memories, designed for general-purpose data buffering applications. It serves as a legacy solution for systems requiring reliable temporary storage without complex control logic. The series provides standardized interfaces for easy integration into existing digital designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider checking Renesas official obsolescence notices or equivalent functional replacements from other manufacturers that match the 2Kx9 configuration and 35ns speed grade.