72235LB25J

Overview

The Renesas Electronics Corporation 72235LB25J is a synchronous first-in, first-out (FIFO) memory device with a storage 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 a maximum clock frequency of 40 MHz with a typical access time of 15 ns. The component features unidirectional data flow and is housed in a 68-pin PLCC package measuring 24.21 mm by 24.21 mm. Designed for surface mount installation, it functions reliably across an operating temperature range of 0°C to 70°C.

Feature Summary

• Synchronous FIFO architecture providing reliable data buffering through clocked read and write controls.
• Unidirectional bus direction supporting dedicated input and output ports for streamlined data transfer.
• Programmable flag support enabling status monitoring for full and empty conditions.

Applications

• Data buffering in graphics processing systems
• Interprocessor communication interfaces
• Local area network data handling

Procurement Notes

Verify the current lifecycle status before procurement, as this component is identified as discontinued. Confirm that the 68-PLCC package dimensions align with existing board layouts. Ensure compliance with RoHS non-compliance requirements if environmental regulations apply. Check for moisture sensitivity level constraints during storage and handling procedures.

Selection Notes

Select this component when a 2K x 18 word synchronous FIFO with unidirectional data flow is required. Verify that the 4.5 V to 5.5 V supply voltage matches system power rails. Ensure the 40 MHz maximum clock speed meets timing requirements. Confirm compatibility with the 68-PLCC surface mount package for PCB integration.

Part Context

This part belongs to the 72235LB25 series of synchronous FIFOs manufactured by Renesas Electronics. It shares architectural similarities with other members of the 7200 family but differs in specific speed grades and package options. The device serves as a specialized memory buffer solution for high-speed digital applications requiring precise data synchronization.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider evaluating other members of the 72235 series or consulting manufacturer resources for legacy component replacements.