DP8420AVX-25

Overview

The DP8420AVX-25 is a microCMOS programmable dynamic RAM controller and driver manufactured by National Semiconductor. It supports memory configurations of 256k, 1M, and 4M densities. The device operates with a maximum frequency of 25 MHz, indicated by the -25 suffix. It utilizes CMOS technology for low power consumption and high-speed performance in DRAM applications.

Feature Summary

• Programmable architecture supporting multiple DRAM density configurations
• Integrated control logic and drivers for dynamic random access memory
• Designed for high-speed data transfer operations

Applications

• Computer memory systems
• Embedded storage controllers
• Industrial computing hardware

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package type and marking codes match official specifications. Check for obsolescence status as National Semiconductor assets are managed by Texas Instruments. Ensure environmental compliance documentation aligns with project requirements.

Selection Notes

Select this component when designing systems requiring programmable DRAM interface control. Compare against similar models like DP8420A or DP8420V based on required operating speed and package constraints. Evaluate system timing requirements against the 25 MHz specification to ensure compatibility with target memory modules.

Part Context

This part belongs to the DP8420 series of dynamic RAM controllers from National Semiconductor. These components were widely used in legacy computer architectures and industrial equipment before transitioning to more integrated memory solutions. The series provides essential interface management between processors and volatile memory subsystems.