Mura bhfuil do shuíomh liostaithe, roghnaigh ceann amháin díobh seo a leanas le do thoil:
Texas Instruments
IC 12-BIT BUS TERM ARRAY16-DIP.
ON Semiconductor
IC FULL ADDER 4BIT P/N 16-DIP.
IC ADDER/SUBTR DUAL 2BIT 16-DIP.
IC RECEIVER/DRVR DIFF ECL 8-DFN.