7447 Datasheet PDF - Fairchild Semiconductor BCD to 7-Segment Decoders/Drivers Specs

7447 - BCD to 7-Segment Decoders/Drivers

Datasheet Summary

Description

The DM7446A and DM7447A feature active-LOW outputs designed for driving common-anode LEDs or incandescent indicators directly.

All of the circuits have full ripple-blanking input/output controls and a lamp test input.

Segment identification and resultant displays are shown on a following page.

Features

s All circuit types feature lamp intensity modulation capability s Open-collector outputs drive indicators directly s Lamp-test provision s Leading/trailing zero suppression Ordering Code: Order Number DM7446AN DM7447AN Package Number Package.

Datasheet Details

Part number	7447
Manufacturer	Fairchild Semiconductor
File Size	51.43 KB
Description	BCD to 7-Segment Decoders/Drivers
Datasheet	7447 Datasheet
Additional preview pages of the 7447 datasheet.

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Full PDF Text Transcription

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DM7446A, DM7447A BCD to 7-Segment Decoders/Drivers September 1986 Revised July 2001 DM7446A, DM7447A BCD to 7-Segment Decoders/Drivers General Description The DM7446A and DM7447A feature active-LOW outputs designed for driving common-anode LEDs or incandescent indicators directly. All of the circuits have full ripple-blanking input/output controls and a lamp test input. Segment identification and resultant displays are shown on a following page. Display patterns for BCD input counts above nine are unique symbols to authenticate input conditions. All of the circuits incorporate automatic leading and/or trailing-edge, zero-blanking control (RBI and RBO). Lamp test (LT) of these devices may be performed at any time when the BI/RBO node is at a HIGH logic level.

Published: Sep 14, 2005 |