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7447 Scheda tecnica(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Il numero della parte 7447
Spiegazioni elettronici  BCD to 7-Segment Decoders/Drivers
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

7447 Scheda tecnica(HTML) 1 Page - National Semiconductor (TI)

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TLF6518
June 1989
DM7446A DM5447ADM7447A
BCD to 7-Segment DecodersDrivers
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 inputout-
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 andor trail-
ing-edge zero-blanking control (RBI and RBO) Lamp test
(LT) of these devices may be performed at any time when
the BIRBO 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
Features
Y
All circuit types feature lamp intensity modulation
capability
Y
Open-collector outputs drive indicators directly
Y
Lamp-test provision
Y
Leadingtrailing zero suppression
Connection Diagram
Dual-In-Line Package
TLF6518 – 1
Order Number DM5447AJ DM7446AN or DM7447AN
See NS Package Number J16A or N16E
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A


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