Programming instructions

74xx
 National Instruments Corporation 6-85 Multisim Component Reference Guide
6.4.14774xx73 (Dual JK FF (clr))
This device contains 2-independent JK flip-flops.
JK flip-flop truth table:
6.4.14874xx74 (Dual D-type FF (pre, clr))
This device is equipped with active-low preset and active-low clear inputs.
D-type positive-edge-triggered flip-flop truth table:
6.4.14974xx75 (4-bit Bistable Latches)
This device features complementary Q and Q outputs from a 4-bit latch.
CLR CLK J K Q Q
0XXX01
1· 00Hold
1· 1010
1· 0101
1 · 1 1 Toggle
· = triggers on pulse (level sensitive)
PRE CLR CLK D Q Q
01XX10
10XX01
00XX11
11· 110
11· 001
110XHold
· = positive edge-triggered
ComponentRef.book Page 85 Thursday, December 7, 2006 10:12 AM