7203L40DB

Overview

The Renesas 7203L40DB is an asynchronous FIFO memory device with a density of 18K bits, organized as 2K words by 9 bits. It features a unidirectional bus architecture and operates at a maximum data rate of 20MHz with a 40ns access time. The component supports a core voltage of 5.0V and utilizes Full and Empty flags for flow control. It is housed in a 28-CDIP package.

Feature Summary

• Asynchronous first-in-first-out memory architecture
• Dual-port design for independent read and write operations
• Hardware-based flow control using Full and Empty status flags

Applications

• Data buffering between components operating at different clock speeds
• Interface bridging in high-speed digital systems
• Temporary storage for serial-to-parallel data conversion tasks

Procurement Notes

This component is officially listed as obsolete or end-of-life by the manufacturer. Availability is restricted, and sourcing may require verification of stock conditions through authorized distributors. Buyers should confirm current supply status and lead times directly with suppliers before procurement planning.

Selection Notes

Select this part for applications requiring simple, hardware-managed asynchronous buffering with a 9-bit data width. Verify that the 5.0V logic level compatibility matches the system requirements. Consider the 28-CDIP package constraints for PCB layout and ensure the 40ns access speed meets the timing specifications of the connected interface.

Part Context

The 7203L40DB belongs to the 7203L series of asynchronous FIFOs from Renesas Electronics. This family provides dual-port memory solutions designed for reliable data transfer across clock domains. The specific model offers a balance of moderate speed and standard parallel data width for general-purpose digital interfacing.

Replacement Considerations

Verify functional equivalence with other 2Kx9 asynchronous FIFOs if direct replacement is needed. Check pinout compatibility and voltage levels. Consult official substitution guides for legacy parts.