Programming instructions

74xx
 National Instruments Corporation 6-65 Multisim Component Reference Guide
6.4.11574xx378 (Hex D-type FF w/en)
This device contains six flip-flops with single-rail outputs.
D-type flip-flop truth table:
6.4.11674xx379 (Quad D-type FF w/en)
This device contains four flip-flops with double-rail outputs.
D-type flip-flop truth table:
6.4.11774xx38 (Quad 2-In NAND (OC))
This device contains four independent 2-input NAND gates. For correct performance, the
open collector outputs require pull-up resistors.
Logic function:
G CLK DATA Q Q
1XX Q0Q0
0· 1 10
0· 0 01
X0X QOQ0
INPUTS OUTPUTS
G
CLK DATA Q Q
1XX Q0Q0
0· 1 10
0· 0 01
X0X Q0Q0
Y = AB
ComponentRef.book Page 65 Thursday, December 7, 2006 10:12 AM