name: 54AS871 function: Dual 16x4 Regs package: DIP,28 manufacturer: TI added-by: Long John Silicon +--()--+ DA1 | 1 28| VCC DA2 | 2 27| DA4 S0 | 3 26| DA3 1A0 | 4 25| S1 1A1 | 5 24| 2A3 1A2 | 6 23| 2A2 1A3 | 7 22| 2A1 1W! | 8 21| 2A0 S2 | 9 20| 2W! QA1 |10 19| S3 QA2 |11 18| DQB4 QA3 |12 17| DQB3 QA4 |13 16| DQB2 GND |14 15| DQB1 +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/