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MC74AC4040N
12-Stage Binary Ripple Counter
MC74AC4040
12-Stage Binary Ripple
Counter
The MC74AC4040 consists of 12 master-slave flip-flops. The
output of each flip-flop feeds the next and the frequency at each output
is half that of the preceding one. The state of the counter advances on
the negative-going edge of the Clock input. Reset is asynchronous and
active-high.
State changes of the Q outputs do not occur simultaneously because
of internal ripple delays. Therefore, decoded output signals are subject
to decoding spikes and may have to be gated with the Clock of the
MC74AC4040 for some designs. 140 MHz Typ. Clock Outputs Source/Sink 24 mA Operating Voltage Range: 2.0 to 6.0 V High Noise Immunity
VCC
Q11 Q10 Q8 Q9 RESET CLK Q1
Q12 Q6 Q5 Q7 Q4 Q3 Q2 GND
Figure 1. Pinout: 16–Lead Packages Conductors
(Top View)
FUNCTION TABLE
