CA3161

CA3161 August 1997 BCD to Seven Segment Decoder/Driver Description The CA3161E is a monolithic integrated circuit that performs the BCD to seven segment decoding function and features constant current segment drivers. When used with the CA3162E A/D Converter the CA3161E provides a complete digital readout system with a minimum number of external parts. Features TTL Compatible Input Logic Levels 25mA (Typ) Constant Current Segment Outputs Eliminates Need for Output Current Limiting Resistors Pin Compatible with Other Industry Standard Decoders Low Standby Power Dissipation . . . . . . . . 18mW (Typ) Ordering Information PART NUMBER CA3161E TEMP. RANGE (oC) 0 to 70 PACKAGE 16 Ld PDIP PKG. NO. E16.3 Pinout CA3161 (PDIP) TOP VIEW Functional Block Diagram BCD INPUTS 23 22 21 20 6 2 1 7 INPUT BUFFERS BCD TO 7 SEGMENT DECODER 13 12 CONSTANT CURRENT SEGMENT DRIVERS 11 10 9 15 BCD INPUTS 21 22 NC NC 1 2 3 4 5 6 7 8 16 V + SEGMENT DRIVER OUTPUTS 15 f 14 g 13 a 12 b 11 c 10 d 9 e BIAS CIRCUITRY 14 a b c d e f g BCD INPUTS NC 23 20 GND 8 GND 16 V+ SEGMENT a-g a f g e d SEGMENT DRIVER SEGMENT IDENTIFICATION b c CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999 File Number 1079.3 9-5 SEGMENT DRIVER OUTPUTS CA3161 Absolute Maximum Ratings DC VSUPPLY (Between Terminals 1 and 10) . . . . . . . . . . . . . . +7.0V Input Voltage (...