72235LB25TF

Overview

The Renesas 72235LB25TF is a synchronous FIFO memory device with a capacity of 36K bits, organized as 2K words by 18 bits. It operates within a supply voltage range of 4.5 V to 5.5 V and supports data rates up to 40 MHz with a typical access time of 15 ns. The component features unidirectional bus directionality and programmable flags for status monitoring. It is housed in a 64-TQFP package (10x10 mm) and functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Synchronous first-in-first-out memory architecture supporting high-speed data buffering
• Programmable flag outputs for empty and full status indication
• Unidirectional data transfer capability for streamlined interface design

Applications

• High-speed data buffering between asynchronous logic domains
• Interface bridging in telecommunications equipment
• Data acquisition systems requiring temporary storage

Procurement Notes

This component is officially discontinued and no longer in production. Availability is restricted to existing stock or surplus channels only. Verify authenticity through authorized distributors and check for moisture sensitivity handling requirements due to the TQFP packaging. Confirm RoHS compliance status as it may not meet current environmental standards.

Selection Notes

Select this part when a 2K x 18 synchronous FIFO is required for unidirectional data flow. Ensure the system voltage aligns with the 4.5 V to 5.5 V specification. Consider the 15 ns access time and 40 MHz limit for timing compatibility. The 64-TQFP package requires appropriate PCB footprint design and thermal management for surface mount assembly.

Part Context

Part of the Renesas 7200 series of synchronous FIFOs, designed for reliable data storage in digital systems. This specific model offers a balance of depth and width for moderate buffer applications. It shares architectural similarities with other members of the 72235 family but differs in organization and pinout configurations.

Replacement Considerations

Official substitutes include IDT72235LB25TF. Verify pin compatibility and electrical specifications before integration. Cross-reference with other 2K x 18 synchronous FIFOs if exact matches are unavailable.