name: 54AS877 function: 8bit Universal Transceiver Port Controller package: DIP,24 manufacturer: TI added-by: Long john Silicon comment: A-to-B, B-to-A, Shift, 3-state +--()--+ S0 | 1 24| VCC S1 | 2 23| CLK S2 | 3 22| SERIN A1 | 4 21| B1 A2 | 5 20| B2 A3 | 6 19| B3 A4 | 7 18| B4 A5 | 8 17| B5 A6 | 9 16| B6 A7 |10 15| B7 A8 |11 14| B8 GND |12 13| Q8 +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/