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20 pin DIP Tri State Octal Bus Transceiver Integrated circuit used on many pinball machine circuit boards.
Transmitter/Receiver designed for 8-line asynchronous 2-way data communication between data buses.Direction Input (DR) controls transmission of Data from bus A to bus B or bus B to bus A depending upon its logic level. The Enable input (E) can be used to isolate the buses.
Octal bus transceiver · Hysteresis Inputs to Improve Noise Immunity · Low Power Schottky 2-Way Asynchronous Data Bus Communication · Input Diodes Limit High-Speed Termination Effects
Reference:
74LS245
CD74AC245E
SN74LS245N
SN74LS245NE4
5281-09308-00
110-0058-00