74F641 Octal Bus Transceiver with Common Output Enable, Non-Inverting (Open Collector)
74F642 Octal Bus Transceiver with Common Output Enable, Inverting (Open Collector)

FEATURES
• High-impedance NPN base inputs for reduced loading
   (20µA in High and Low states)
• Octal bidirectional bus interface
• Common Output Enable for both Transmit and Receive modes
• Open collector outputs sink 64mA
• —74F641, non-inverting
   —74F642, inverting