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DS8973 Datasheet

  • DS8973

  • DS8973 9-Digit LED Driver

  • 4頁(yè)

  • NSC

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DS8973 9-Digit LED Driver
May 1986
DS8973 9-Digit LED Driver
General Description
The DS8973 is a 9-digit driver designed to operate from
3-cell battery supplies Each driver will sink 100 mA to less
than 0 7V when driven by only 0 1 mA Each input is blocked
by diodes so that the input can be driven below ground with
virtually no current drain This is especially important in cal-
culator systems employing a DC-to-DC converter on the
negative side of the battery If the converter were on the
positive side of the battery the converter would have to
handle all of the display current as well as the MOS calcula-
tor chip current But if it is on the negative side it only has
to handle the MOS current The DS8973 is designed for the
more efficient operating mode
Features
Y
Y
Y
Y
Nine complete digit drivers
Built-in low battery indicator
High current outputs 100 mA
Straight through pin out for easy board layout
Equivalent Circuit Diagrams
Typical Driver Circuit
Typical D P Out Circuit
TL F 5851 鈥?2
TL F 5851 鈥?1
Connection Diagram
Dual-In-Line Package
TL F 5851 鈥?3
Top View
Order Number DS8973N
See NS Package Number N22A
C
1995 National Semiconductor Corporation
TL F 5851
RRD-B30M105 Printed in U S A

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