7208L25J

Overview

The Renesas 7208L25J is an asynchronous FIFO memory device featuring a 64K x 9 organization and a 25ns access time. It operates within a 4.5V to 5.5V supply voltage range and supports data rates up to 28.5MHz. The component is housed in a 32-PLCC package with J-leads, designed for surface-mount installation. This CMOS parallel FIFO provides bidirectional data bus capability, facilitating efficient buffering between high-speed and low-speed devices in digital systems.

Feature Summary

• Asynchronous operation allows independent read and write clock domains
• Bidirectional data bus interface simplifies system integration
• CMOS technology ensures compatibility with standard logic families

Applications

• Data buffering between microprocessors and peripheral devices
• Interface bridging between different clock domains
• High-speed data acquisition systems requiring temporary storage

Procurement Notes

Verify the specific suffix designation against official Renesas documentation, as variations such as JI or J8 may indicate differences in packaging or RoHS compliance status. Confirm current lifecycle status, as this component family has faced discontinuation notices. Ensure that any substitute parts maintain compatible voltage levels and pin configurations to avoid circuit redesign.

Selection Notes

Select this component when a 64K depth and 9-bit width are required for asynchronous data buffering. The 25ns speed suits applications needing moderate throughput without complex synchronization logic. Consider the PLCC package availability and soldering requirements during PCB layout. Verify that the 5V operating voltage aligns with the target system's power rails and I/O standards.

Part Context

This part belongs to the Renesas 7208 series of asynchronous FIFOs, which offers various depths and speeds. The 7208 variant specifically targets applications requiring larger buffer capacities compared to smaller counterparts like the 7203 or 7204. The series is known for its CMOS compatibility and ease of use in parallel data transfer scenarios.

Replacement Considerations

Official substitutes include IDT7208L25JI and IDT7208L25J8. These variants share the same core functionality but may differ in packaging type or environmental compliance. Cross-reference datasheets to ensure pinout and electrical characteristics match before replacement.