Programming instructions

74xx
 National Instruments Corporation 6-91 Multisim Component Reference Guide
When the EN is HIGH the outputs do not change state, regardless of the data or clock input
transitions.
6.4.15774xx827 (10-Bit Buffers/Line Drivers)
This device is a line driver designed to be employed as memory address drivers, clock drivers
and bus-oriented transmitters/receivers which provide improved PC board density. The
devices have 3-STATE outputs controlled by the Output Enable (OE
) pins. The outputs can
sink 64 mA and source 15 mA. Input clamp diodes limit high-speed termination effects.
6.4.15874xx828 (10-Bit Buffers/Line Drivers)
This device is a line driver designed to be employed as memory address drivers, clock drivers
and bus-oriented transmitters/receivers which provide improved PC board density. The
devices have 3-STATE outputs controlled by the Output Enable (OE
) pins. The outputs can
sink 64 mA and source 15 mA. Input clamp diodes limit high-speed termination effects.
6.4.15974xx83 (4-bit Bin Full Adder)
This device performs the addition of two 4-bit binary numbers. It features full internal look-
ahead across all four bits generating the carry term in ten nanoseconds typically.
ComponentRef.book Page 91 Thursday, December 7, 2006 10:12 AM