72205LB25PF8

Overview

The Renesas Electronics Corporation 72205LB25PF8 is a CMOS synchronous first-in, first-out (FIFO) memory device. It features a storage capacity of 4.5K bits organized as 256 words by 18 bits. The component supports unidirectional data transfer with a maximum operating frequency of 40MHz and an access time of 15ns. It operates within a supply voltage range of 4.5V to 5.5V and draws a maximum current of 60mA. The device is housed in a 64-pin TQFP package measuring 10x10mm and is rated for industrial temperatures from -40°C to +85°C.

Feature Summary

• Synchronous FIFO architecture supporting high-speed data buffering
• Unidirectional bus direction for controlled data flow
• CMOS technology ensuring low power consumption

Applications

• Data buffering in multiprocessing systems
• Rate matching between asynchronous components
• Interprocessor communication interfaces

Procurement Notes

This component is officially discontinued and no longer in active production. Verification of availability should focus on surplus or secondary market sources rather than direct manufacturer distribution. Confirm the specific suffix PF8 matches the required 64-TQFP package and lead-free status if applicable. Ensure compatibility with existing design constraints before sourcing from non-primary vendors.

Selection Notes

Select this part when a 256 x 18 synchronous FIFO is required for unidirectional data handling. Verify that the 40MHz speed and 15ns access time meet system timing requirements. Consider the 64-TQFP package dimensions for PCB layout. Check for end-of-life status implications on long-term supply stability and potential need for redesign.

Part Context

The 72205LB25PF8 belongs to the IDT/Renesas 72205 series of synchronous FIFOs. This family provides reliable memory solutions for digital signal processing and interface applications. The device utilizes standard CMOS processes for performance and density. It serves as a specialized memory buffer distinct from general-purpose SRAM or microcontrollers.

Replacement Considerations

Verify functional equivalence with other 256 x 18 synchronous FIFOs. Check pinout compatibility with the 64-TQFP package. Ensure voltage levels and access times match original specifications.