Programming instructions

74xx
 National Instruments Corporation 6-61 Multisim Component Reference Guide
6.4.10674xx365 (Hex Buffer/Driver w/3-state)
This device features high fan-out, improved fan-in, and can be used to drive terminated lines
down to 133 ohms.
Hex buffer/driver truth table:
6.4.10774xx366 (Hex Inverter Buffer/Driver w/3-state)
This device is a 3-state Hex inverter buffer/driver.
Sample hex inverter buffer/driver truth table:
INPUTS OUTPUTS
OE
0
OE
1
I
n
Y
n
Y
n
00001
00110
X1XZZ
1XXZZ
1 = High voltage level
0 = Low voltage level
X = Don’t care
Z = High impedance “off” state
ComponentRef.book Page 61 Thursday, December 7, 2006 10:12 AM