DM7446AN

Display Drivers Overview

The DM7446AN is a BCD-to-7-segment decoder/driver manufactured by onsemi (formerly National Semiconductor). It features active-low outputs designed to drive common-anode LEDs or incandescent indicators directly. The device operates with a supply voltage of 5 V and utilizes TTL logic technology. It is housed in a 16-pin plastic Dual-In-Line (DIP) package.

Display Drivers Feature Summary

• Active-low outputs capable of driving common-anode displays directly
• Includes full ripple-blanking input/output controls for display management
• Features lamp test input for operational verification
• Incorporates automatic leading and trailing-edge zero-blanking control

Display Drivers Applications

• Driving common-anode LED displays
• Driving incandescent indicator lamps
• BCD to 7-segment decoding in digital systems

Display Drivers Procurement Notes

Verify the manufacturer origin, as this component was originally produced by National Semiconductor before its acquisition by onsemi. Confirm the DIP-16 package type and standard TTL compatibility requirements for your specific circuit design. Ensure the active-low output polarity matches your display hardware configuration.

Display Drivers Selection Notes

Select this component when direct drive capability for common-anode displays is required without additional buffering. It is suitable for applications needing simple BCD decoding with built-in blanking and lamp test functions. Consider the 5 V supply requirement and TTL input levels during system integration.

Display Drivers Part Context

This part belongs to the legacy 7446/7447 series of BCD-to-7-segment decoders. It is functionally similar to other devices in the 74xx series but specifically optimized for driving high-current loads like incandescent bulbs or LEDs directly via open-collector outputs.

Display Drivers Replacement Considerations

Check for equivalents such as DM7447AN or DM5447A from the same family. Verify pinout compatibility and output current capabilities against modern replacements if sourcing new inventory.