Programming instructions

CMOS
Multisim Component Reference Guide 7-10 ni.com
5-stage Johnson counter truth table:
7.2.18 40174 (Hex D-type Flip-flop)
MR CP0 CP1 OPERATION
1 X X O0 = O5-9 = H; O1 to O9 = L
0 1 ‚ Counter advances
0 · 0 Counter advances
0 0 X No change
0 X 1 No change
0 1 · No change
0 ‚ 0 No change
1 = HIGH state (the more positive voltage)
0 = LOW state (the less positive voltage)
X = state is immaterial
· = positive-going transition
‚ = negative-going transition
n = number of clock pulse transitions
The 40174 device is a hex edge-triggered D-type flip-flop with six data inputs (D0 to D5), a
clock input (CP), an overriding asynchronous master reset input (MR
), and six buffered
outputs (Q0 to Q5).
ComponentRef.book Page 10 Thursday, December 7, 2006 10:12 AM