72235LB25PFI8

Overview

The Renesas 72235LB25PFI8 is a synchronous FIFO memory device with a capacity of 36K bits, organized as 2K words by 18 bits. It operates at a maximum data rate of 40MHz with a 15ns access time. The component supports unidirectional bus direction and features programmable 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 (14x14) surface-mount package and is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• Provides 36K-bit synchronous storage capacity organized as 2K x 18 bits for efficient data buffering.
• Supports high-speed operation up to 40MHz with 15ns access time for rapid data transfer.
• Includes programmable status flags to monitor full and empty conditions without constant polling.

Applications

• Data buffering between asynchronous clock domains in communication systems
• Interface bridging in industrial control networks
• Temporary storage in digital signal processing pipelines

Procurement Notes

Verify the specific suffix PFI8 against official Renesas documentation to confirm package type and moisture sensitivity level. Confirm RoHS compliance status as legacy variants may differ. Check for End-of-Life notices or product change notifications that may affect long-term availability. Ensure the supplier provides valid traceability for the 64-TQFP package variant.

Selection Notes

Select this component when a 2K x 18 bit synchronous buffer is required. Compare against the 72235LB15PFGI8 if higher speed (66.7MHz) is needed. Consider the 72225 series if 18K capacity is sufficient. Verify voltage compatibility with the 4.5V to 5.5V requirement. Ensure the 64-TQFP footprint matches the PCB design constraints.

Part Context

This part belongs to the Renesas 7200 series of synchronous FIFOs. It shares architectural similarities with other IDT/Renesas 72xxx devices but differs in capacity and speed grades. The 72235 designation indicates the 36K bit configuration. It is a legacy component often replaced by newer integrated solutions in modern designs.

Replacement Considerations

Official substitutes include the 72235LB15PFGI8 for higher speed requirements. Cross-reference with IDT72235LB25PFI8 equivalents from previous manufacturer branding. Verify pinout compatibility before substitution.