PDF DM7447A Datasheet ( Hoja de datos )

Número de pieza DM7447A
Descripción BCD to 7-Segment Decoders/Drivers
Fabricantes National Semiconductor 
Logotipo National Semiconductor Logotipo

Total 6 Páginas
DM7447A Hoja de datos, Descripción, Manual
June 1989
DM7446A DM5447A DM7447A
BCD to 7-Segment Decoders Drivers
General Description
The 46A and 47A feature active-low outputs designed for
driving common-anode LEDs or incandescent indicators di-
rectly All of the circuits have full ripple-blanking input out-
put controls and a lamp test input Segment identification
and resultant displays are shown on a following page Dis-
play patterns for BCD input counts above nine are unique
symbols to authenticate input conditions
All of the circuits incorporate automatic leading and or trail-
ing-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 con-
trol the lamp intensity (by pulsing) or to inhibit the outputs
Y All circuit types feature lamp intensity modulation
Y Open-collector outputs drive indicators directly
Y Lamp-test provision
Y Leading trailing zero suppression
Connection Diagram
Dual-In-Line Package
TL F 6518 – 1
Order Number DM5447AJ DM7446AN or DM7447AN
See NS Package Number J16A or N16E
C1995 National Semiconductor Corporation TL F 6518
RRD-B30M105 Printed in U S A

1 page

DM7447A pdf
Logic Diagram
Physical Dimensions inches (millimeters)
TL F 6518 – 2
16-Lead Ceramic Dual-In-Line Package (J)
Order Number DM5447AJ
NS Package Number J16A

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