DM7446AN

DM7446AN Datasheet

DM7446A, DM7447A BCD to 7-Segment Decoders/Drivers

Part	Datasheet
DM7446AN	DM7446AN (pdf)

Related Parts	Information
DM7447AN	DM7447AN

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DM7446A, DM7447A BCD to 7-Segment Decoders/Drivers DM7446A, DM7447A BCD to 7-Segment Decoders/Drivers 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. All types contain an overriding blanking input BI which can be used to control the lamp intensity by pulsing or to inhibit the outputs. 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 Description N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Connection Diagram 2001 Fairchild Semiconductor Corporation DS006518 DM7446A, DM7447A Function Table Decimal or Inputs BI/RBO Outputs Note Function LT RBI D C B A Note 1 a b c d e f g HHL L HXL L LH HL LHHHH HXL LHL L LHL HX L LHH L LHHL HXLHL L HL LHH L HX L H L H LHLLHLL HX LHHL HX LHHH L H Note 2 HXHL L HXHL LH L LHH L HXHLHL HHHL LHL HXH L HH HH L LHHL HXHH L HLHHH L

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DM7446A, DM7447A BCD to 7-Segment Decoders/Drivers

DM7446A, DM7447A BCD to 7-Segment Decoders/Drivers

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. All types contain an overriding blanking input BI which can be used to control the lamp intensity by pulsing or to inhibit the outputs.
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 Description

N16E
16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide

N16E
16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide

Connection Diagram
2001 Fairchild Semiconductor Corporation DS006518

DM7446A, DM7447A

Function Table

Decimal or

Inputs

BI/RBO

Outputs

Note

Function LT RBI D C B A Note 1 a b c d e f g

HHL L

HXL L LH

HL LHHHH

HXL LHL

L LHL

HX L LHH

L LHHL

HXLHL L

HL LHH L

HX L H L H

LHLLHLL

HX LHHL

HX LHHH

L H Note 2

HXHL L

HXHL LH

L LHH L

HXHLHL

HHHL LHL

HXH L HH

HH L LHHL

HXHH L

HLHHH L

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived DM7446AN Datasheet file may be downloaded here without warranties.

Datasheet ID: DM7446AN 513625