name: 7421 function: Dual 4 Input AND package: DIP,14 manufacturer: Texas Instruments added-by: +--()--+ 1A | 1 14| Vcc 1B | 2 13| 2D NC | 3 12| 2C 1C | 4 11| NC 1D | 5 10| 2B 1Y | 6 9| 2A GND | 7 8| 2Y +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/