MC14017B
APPLICATIONS INFORMATION
Figure 3 shows a technique for extending the number of decoded output states for the MC14017B. Decoded outputs are
sequential within each stage and from stage to stage, with no dead time (except propagation delay).
RESET
RESET
RESET
CLOCK
CLOCK
CLOCK
MC14017B
MC14017B
MC14017B
• • •
Q8 Q9
CE
CE
CE
Q1
• • •
• • •
Q0 Q1
Q8 Q9
Q0Q1
Q8 Q9
8 DECODED
OUTPUTS
9 DECODED
OUTPUTS
8 DECODED
OUTPUTS
CLOCK
FIRST STAGE
INTERMEDIATE STAGES
LAST STAGE
Figure 3. Counter Expansion
Pcp
Ncp
90%
10%
V
DD
CLOCK
50%
V
SS
20 ns
t
t
su
20 ns
rem
V
DD
CLOCK
ENABLE
V
SS
t
rem
20 ns
20 ns
20 ns
V
DD
RESET
20 ns
V
SS
t
t
PLH
PLH
t
PHL
Q0
V
OH
V
OL
t
TLH
t
t
PHL
PLH
V
90%
10%
OH
50%
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
V
OL
t
t
t
t
THL
PLH
PHL
TLH
V
OH
V
OL
t
t
PHL
t
t
THL
PLH
TLH
V
OH
50%
V
OL
t
t
t
t
THL
PLH
PHL
TLH
V
OH
t
V
OL
THL
t
t
t
TLH
PLH
PHL
t
PHL
V
OH
V
OL
t
t
THL
TLH
t
t
PHL
90%
PLH
V
OH
10%
V
OL
t
t
THL
t
THL
t
PHL
PLH
V
OH
V
OL
t
THL
V
OH
t
PLH
V
OL
t
t
THL
PLH
TLH
t
PHL
t
V
OH
Q9
C
V
OL
t
t
t
PHL
t
TLH
THL
PHL
t
PLH
V
OH
out
V
OL
t
THL
t
TLH
Figure 4. AC Measurement Definition and Functional Waveforms
http://onsemi.com
6
ONSEMI [ ONSEMI ]
