DP8440VLJ-25

Controllers Overview

The DP8440VLJ-25 is a DRAM controller manufactured by National Semiconductor, now part of Texas Instruments. It is designed for high-performance memory systems and supports dynamic random-access memory (DRAM) configurations. The device operates at a maximum clock frequency of 25 MHz and features a 1M x 1 memory organization. It is housed in a plastic LCC-68 package with 68 terminals. The component functions within a commercial temperature range, typically from -40°C to 85°C, and requires a nominal 5V supply voltage. It includes low-power mode capabilities to reduce energy consumption during idle states.

Controllers Feature Summary

• Supports 1M x 1 DRAM memory organization
• Operates up to 25 MHz clock frequency
• Includes low-power mode functionality
• Housed in a 68-pin plastic LCC package

Controllers Applications

• High-speed DRAM system control
• Computer memory subsystems
• Industrial data acquisition systems

Controllers Procurement Notes

Verify the exact suffix 'VLJ' against official National Semiconductor or Texas Instruments documentation to confirm pinout and electrical specifications. Ensure compatibility with 5V logic levels and 25 MHz timing requirements. Confirm package integrity for the 68-pin LCC form factor before integration into PCB designs.

Controllers Selection Notes

Select this component when a dedicated DRAM controller is required for 1M x 1 memory arrays operating at 25 MHz. Consider the 68-pin LCC package constraints and 5V power supply availability. Evaluate thermal performance within the commercial temperature range for the specific application environment.

Controllers Part Context

This part belongs to the DP84xx series of DRAM controllers developed by National Semiconductor. These controllers were widely used in early personal computers and embedded systems requiring reliable memory management. The DP8440 variant specifically targets high-speed DRAM applications with integrated control logic.

Controllers Replacement Considerations

Check for direct pin-to-pin replacements in the DP84xx family. Verify if newer generations from Texas Instruments offer compatible functionality with improved power efficiency or packaging options.