DP8422AVX-20

Controllers Overview

The DP8422AVX-20 is a Dynamic RAM (DRAM) memory controller manufactured by National Semiconductor. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range of 0°C to 70°C (TA). The component utilizes CMOS technology and is housed in an 84-PLCC package with dimensions of 29.31x29.31mm, also described as an 84-LCC J-Lead configuration. This surface-mount device is designed for efficient integration into systems requiring DRAM management.

Controllers Feature Summary

• CMOS-based dynamic RAM controller architecture
• Surface mount technology implementation
• Standard 84-pin PLCC/J-Lead packaging

Controllers Applications

• Dynamic RAM memory system control
• Computer peripheral interface design
• Embedded storage controller modules

Controllers Procurement Notes

Verify the manufacturer designation as National Semiconductor, now part of Texas Instruments, due to corporate acquisitions. Confirm the specific suffix -20 indicates the required speed grade and that the 84-PLCC package matches the target PCB footprint. Check for obsolete status implications regarding long-term availability and potential need for lifecycle management strategies when sourcing this component.

Controllers Selection Notes

Select this component when a dedicated DRAM controller is required for systems operating at standard 5V logic levels. Ensure the design accommodates the 84-PLCC surface mount package constraints. Consider the commercial temperature range limits if the application environment exceeds 70°C or drops below 0°C, as industrial variants may be necessary for broader thermal conditions.

Controllers Part Context

This part belongs to the DP8422 series of DRAM controllers from National Semiconductor. Related variants include the DP8422AVX-25 and DP8422V, which may differ in speed grades or package types. The series was designed to manage dynamic random-access memory operations in computing architectures prevalent during its production era.

Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official National Semiconductor or Texas Instruments replacement guides for equivalent functionality.