7203L20TDB

Overview

The Renesas Electronics Corporation 7203L20TDB is a CMOS parallel FIFO memory component with an organization of 2K x 9 bits. It features a 20 ns access time and operates within a 4.5 V to 5.5 V supply voltage range. The device utilizes a CDIP-28 package configuration. This asynchronous FIFO supports bidirectional data bus operations and includes status flags for empty, half-full, and full conditions. It is designed for multiprocessing and rate buffering applications requiring simultaneous read and write capabilities.

Feature Summary

• Asynchronous operation allowing independent clock domains for read and write processes
• Bidirectional data bus architecture supporting flexible system integration
• Hardware status flags indicating empty, half-full, and full buffer states
• CMOS technology ensuring low power consumption relative to TTL equivalents

Applications

• Multiprocessing systems requiring data synchronization between processors
• Rate buffering interfaces between high-speed and low-speed components
• Digital signal processing pipelines managing variable data throughput
• Communication interface buffers handling asynchronous data streams

Procurement Notes

This component is officially discontinued by the manufacturer. Mouser Electronics reports that the product is not currently sold in many regions. Verification of availability through authorized distributors or secondary market suppliers is required before procurement planning. Ensure compatibility with legacy systems as no direct active replacements are listed for this specific package variant.

Selection Notes

Select this part only for legacy system maintenance or repair where the specific 20 ns timing and CDIP-28 package are mandatory constraints. Evaluate alternative modern FIFOs if new design implementation is possible, considering pin compatibility and electrical parameter alignment. Verify RoHS compliance requirements as the source indicates non-compliance with current environmental standards.

Part Context

The 7203L series belongs to Renesas' family of high-performance asynchronous FIFO memories. These devices are characterized by their expandability in both word depth and bit width. The 7203L20TDB specifically represents the 20 nanosecond speed grade within this lineage, offering reliable performance for industrial and commercial applications prior to its discontinuation.

Replacement Considerations

Publicly confirmed substitute part numbers for the 7203L20TDB were not identified in the provided documentation. Designers should consult manufacturer cross-reference guides for functionally compatible alternatives that match the 2K x 9 organization and 20 ns access time specifications.