72205LB25TF

Overview

The Renesas 72205LB25TF is a synchronous FIFO memory device with a storage capacity of 4.5K bits, organized as 256 words by 18 bits. It operates at a maximum data rate of 40MHz with an access time of 15ns. The component supports unidirectional bus direction and programmable status flags. It functions within a supply voltage range of 4.5V to 5.5V and draws a maximum supply current of 60mA. The device is housed in a 64-TQFP (10x10) surface-mount package and is rated for industrial operating temperatures from -40°C to 85°C.

Feature Summary

• Synchronous operation with simultaneous read and write capabilities controlled by dedicated clocks.
• Programmable status flags provide real-time monitoring of buffer levels to prevent overflow or underflow.
• High-speed performance supporting data rates up to 40MHz with fast 15ns access times.

Applications

• Data buffering between asynchronous system domains
• Rate matching in high-speed digital interfaces
• Interprocessor communication link buffers

Procurement Notes

Verify the specific suffix 'TFI' versus 'TF' when sourcing, as availability and exact packaging may vary. Confirm RoHS compliance status, as older batches may not meet current environmental standards. Check for end-of-life notices or obsolescence warnings directly from Renesas before finalizing procurement plans.

Selection Notes

Select this component for applications requiring 18-bit wide data paths and moderate depth buffering. Ensure the design accommodates the 64-pin TQFP footprint and the 4.5V to 5.5V power supply requirements. Consider the 40MHz speed limit when designing clock domains for the target interface.

Part Context

This part belongs to the IDT 72205 series of synchronous FIFOs, now manufactured under the Renesas Electronics brand following corporate acquisitions. The 72205LB25 variant specifically denotes the 15ns speed grade within the LB family, offering a balance of density and speed for general-purpose buffering tasks.

Replacement Considerations

Direct pin-compatible substitutes include other members of the 72205LB25 family, such as the 72205LB25PFG. Verify functional equivalence regarding flag logic and timing parameters before swapping components in existing designs.