DS8884A Datasheet, PDF (1/4 Pages) National Semiconductor (TI) – High Voltage Cathode Decoder/Driver

May 1986
DS8884A High Voltage Cathode Decoder Driver
General Description
The DS8884A is designed to decode four lines of BCD input
and drive seven-segment digits of gas-filled readout dis-
plays
All outputs consist of switchable and programmable current
sinks which provide constant current to the tube cathodes
even with high tube anode supply tolerance Output currents
may be varied over the 0 2 mA to 1 2 mA range for multiplex
operation The output current is adjusted by connecting an
external program resistor (R_P) from V_CC to the program in-
put in accordance with the programming curve Unused out-
puts must be tied to V_CC
Features
Y _{Usable with AC or DC input coupling}
Y _{Current sink outputs}
Y _{High output breakdown voltage}
Y _{Low input load current}
Y _{Intended for multiplex operation}
Y _{Input pullups increase noise immunity}
Y _{Comma d pt drive}
Connection Diagram
Dual-In-Line Package
Top View
Order Number DS8884AN
See NS Package Number N18A
TL F 5847 – 2
C1995 National Semiconductor Corporation TL F 5847
RRD-B30M105 Printed in U S A