DP8420V-33

Overview

The DP8420V-33 is a microCMOS programmable dynamic RAM controller and driver designed for high-speed memory applications. It supports 256k, 1M, and 4M DRAM configurations. The device operates with a supply voltage range typical of 3.3V logic systems, ensuring compatibility with standard digital interfaces. It integrates control logic and output drivers to manage address, data, and command signals for synchronous or asynchronous DRAM operations.

Feature Summary

• Programmable architecture supporting multiple DRAM densities including 256k, 1M, and 4M configurations
• Integrated microCMOS technology for high-speed operation and low power consumption
• Built-in output drivers capable of handling direct interface requirements without external buffering

Applications

• High-speed dynamic RAM controller circuits in computer systems
• Memory subsystems requiring programmable timing and density support
• Industrial control systems utilizing standard DRAM modules

Procurement Notes

Verify component authenticity through authorized distributors due to the legacy status of National Semiconductor products. Confirm package integrity and pinout compatibility with existing PCB layouts. Check for RoHS compliance if required by specific environmental regulations, as original manufacturing specifications may vary based on production date and revision.

Selection Notes

Select this component when designing systems requiring flexible DRAM density support within a single controller architecture. Ensure the system clock frequencies align with the -33 speed grade specifications. Evaluate thermal management requirements for the specific package type used in the target application environment.

Part Context

This part belongs to the DP8420 series of programmable DRAM controllers from National Semiconductor, now part of Texas Instruments. The series provides scalable solutions for various memory sizes, allowing designers to reuse controller designs across different product generations with varying memory capacities.