(PDF) DS8973 Datasheet - DS8973 9-Digit LED Driver

Número de pieza	DS8973
Descripción	DS8973 9-Digit LED Driver
Fabricantes	National Semiconductor
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No Preview Available ! 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 Equivalent Circuit Diagrams Typical Driver Circuit to handle the MOS current The DS8973 is designed for the more efficient operating mode Features Y Nine complete digit drivers Y Built-in low battery indicator Y High current outputs 100 mA Y Straight through pin out for easy board layout Typical D P Out Circuit Connection Diagram TL F 5851 – 1 Dual-In-Line Package TL F 5851 – 2 C1995 National Semiconductor Corporation TL F 5851 Top View Order Number DS8973N See NS Package Number N22A TL F 5851 – 3 RRD-B30M105 Printed in U S A 1 page

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PDF DS8973 Data sheet ( Hoja de datos )