7203L35J

Overview

The Renesas Electronics Corporation 7203L35J is a discontinued asynchronous FIFO memory device belonging to the 7203 series. It features an organization of 2K x 9 bits, providing a total storage capacity of 18 kilobits. The component supports unidirectional data transfer with a maximum access time of 35 nanoseconds. It operates within a core voltage range of 4.5 V to 5.5 V and utilizes CMOS parallel interface technology. The device is housed in a PLCC-32 package.

Feature Summary

• Asynchronous operation for independent read and write clock domains
• Unidirectional bus architecture for dedicated data flow
• CMOS parallel interface supporting standard logic levels

Applications

• Data buffering between microprocessors and peripheral devices
• Interface bridging between systems operating at different clock speeds
• Temporary data storage in high-speed digital signal processing chains

Procurement Notes

This component is officially discontinued and no longer in production. Availability is restricted to existing stock held by authorized distributors or secondary market suppliers. Verification of part authenticity and physical condition is critical due to the end-of-life status. Sourcing should prioritize reputable channels offering traceability documentation to ensure reliability for legacy system maintenance.

Selection Notes

Engineers replacing this obsolete part must evaluate current asynchronous FIFO alternatives with compatible pinouts or utilize level-shifting adapters. Key selection criteria include matching the 2K x 9 depth, ensuring 35ns or faster access times, and confirming 5V tolerance. Package adaptation may be necessary if transitioning from PLCC-32 to modern surface-mount formats like QFP or BGA.

Part Context

The 7203L35J is part of the broader 7203-7208 family of asynchronous FIFOs manufactured by Renesas Electronics (formerly IDT). This family provides various density and speed options for parallel data buffering applications. The specific L35 suffix denotes the 35ns access speed variant within the 2K x 9 configuration, designed for general-purpose high-speed data handling tasks.