name: ICL7137CPL function: 3,5 digit ADC for LED package: DIP 40,40 manufacturer: added-by: Tobias Giesen +--()--+ V+ | 1 40| OSC1 D1 | 2 39| OSC2 C1 | 3 38| OSC3 B1 | 4 37| TEST A1 | 5 36| REF Hi F1 | 6 35| REF Lo G1 | 7 34| C+ ref E1 | 8 33| C- ref D2 | 9 32| common C2 |10 31| in hi B2 |11 30| in lo A2 |12 29| a-z F2 |13 28| buff E2 |14 27| int D3 |15 26| V- B3 |16 25| G2 F3 |17 24| C3 E3 |18 23| A3 AB4 |19 22| G3 POL(MINUS) |20 21| DIG GND +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/