72235LB10J8

Overview

The Renesas Electronics Corporation 72235LB10J8 is a synchronous FIFO memory device with a storage capacity of 36K bits, organized as 2K words by 18 bits. It operates on a unidirectional bus architecture and supports data rates up to 100 MHz with an access time of 6.5 ns. The component functions within a supply voltage range of 4.5 V to 5.5 V and draws a maximum supply current of 60 mA. It is housed in a PLCC-68 package and is rated for commercial operating temperatures between 0°C and 70°C.

Feature Summary

• Synchronous first-in-first-out memory architecture supporting high-speed data buffering
• Unidirectional data bus configuration for dedicated input or output flow
• Integrated programmable status flags for monitoring buffer levels

Applications

• High-speed data buffering in telecommunications systems
• Interprocessor communication interfaces requiring precise timing control
• Digital signal processing pipelines needing temporary data storage

Procurement Notes

Verify the component status before procurement as this part is listed as discontinued. Confirm that the PLCC-68 package and 5V logic requirements align with existing design constraints. Check for moisture sensitivity handling requirements during storage and assembly. Ensure that any replacement strategy accounts for the obsolescence of the original manufacturer's production line.

Selection Notes

Select this component when a synchronous FIFO with 18-bit word width and 2K depth is required. The 100 MHz speed rating suits applications demanding low latency data transfer. Verify compatibility with 5V logic families and ensure the PLCC-68 footprint fits the target PCB layout. Consider the unidirectional nature of the bus when designing the system interface.

Part Context

This device belongs to the Renesas 72235LB series of synchronous FIFOs. It shares architectural similarities with other members of the family but differs in package type and specific speed grades. The J8 suffix typically denotes a specific package variant within the product line. Understanding the broader series helps in identifying functional equivalents or pin-compatible alternatives if available.

Replacement Considerations

Public confirmed substitute part numbers are not available for this discontinued component.