View 74f647 74f649 1 datasheet:

INTEGRATED CIRCUITS 74F647 Octal transceiver/register, non-inverting (open-collector) 74F649 Octal transceiver/register, inverting (open-collector) Product specification 1992 Feb 28 IC15 Data Handbook Philips Semiconductors Philips Semiconductors Product specification Octal transceivers/registers (open-collector) 74F647/74F649 74F647 Octal Transceiver/Register, Non-inverting (Open Collector) 74F649 Octal Transceiver/Register, Inverting (Open Collector) data when the Output Enable, OE is active Low. In the isolation FEATURES mode (Output Enable, OE = High), data from Bus A may be stored • High impedance NPN base inputs for reduced loading in the B register and/or data from Bus B may be stored in the A (20µA in High and Low states) register. • Independent registers fo