74141

74141 1-OF-10 DECODER/DRIVER (NIXIE) (With Open-Collector Outputs) 141 CONNECTION DIAGRAM PINOUT A DESCRIPTION— The ’141 is a BCD-to-decimal decoder driver that is de­ signed to accept a 4-bit BCD code input and drive cold-cathode indicator tubes. This decoder utilizes design improvements that minimize switching transients in order to maintain a stable display. The segments and numeric designations chosen to representthedecimal numbers areshown intheTruth Table. For binary inputs 10 through 15, the outputs are OFF. These invalid codes can be used in blanking leading ortrailing-edgezeroes in a display. The ten high performance, npn output transistors have a maximum reverse cur­ rent of 50 juA at 55 V. Typical power dissipation is 55 mW. ORDERING CODE: See Section 9 PKGS PIN OUT COMMERCIAL GRADE Vcc = +5.0 V ±5%, T a = 0°C to +70° C Plastic DIP (P) A 74141 PC Ceramic DIP (D) A 74141 DC PKG TYPE 9B 6B LOGIC SYMBOL 3 6 7 4 TTTTTTTTTT" 16 15 8 9 13 14 11 10 1 2 Vcc = Pin 5 G N D = Pin 12 INPUT LOADING/FAN-OUT: See Section 3 for U.L. definitions PIN NAMES DESCRIPTION Ao Ai — A3 Co — Og BCD Input BCD Inputs Outputs (Active LOW) *OC — Open Collector 74XX (U.L.) HIGH/LOW 1 .0 / 1 .0 2 .0 / 2 . 0 OCV7.0 mA 141 FUNCTIONAL DESCRIPTION— The 1-of-10 decoder/driver accepts BCD inputs from all TTL circuits and produces the correct output selection to directly drive gas filled cold cathode indicator tubes. The outputs are selected as shown in the Truth Table. It is ...