Philips Semiconductors
Product specification
Johnson decade counter with 10 decoded outputs
74HC/HCT4017
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
74HCT
SYMBOL
PARAMETER
UNIT
WAVEFORMS
VCC
(V)
+25
−40 to+85
−40 to+125
min. typ. max. min.
max.
min.
max.
tPHL/ tPLH
propagation delay
CP0 to Qn
25
25
25
25
22
20
7
46
46
50
50
46
46
15
58
69
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
Fig.9
Fig.9
Fig.9
Fig.9
Fig.8
Fig.8
Fig.9
Fig.8
Fig.8
Fig.8
Fig.7
t
t
PHL/ tPLH
PHL/ tPLH
propagation delay
CP0 to Q5-9
58
63
63
58
58
19
69
75
75
69
69
22
propagation delay
CP1 to Qn
tPHL/ tPLH
tPHL
propagation delay
CP1 to Q5-9
propagation delay
MR to Q1−9
tPLH
propagation delay
MR to Q5−9, Q0
t
THL/ tTLH
output transition time
tW
clock pulse width
HIGH or LOW
16
16
5
7
20
20
5
24
tW
master reset pulse
width; HIGH
4
24
5
trem
tsu
removal time
MR to CP0, CP1
−5
−3
set-up time
CP1 to CP0;
CP0 to CP1
10
13
15
th
hold time
CP0 to CP1;
CP1 to CP0
10
6
13
24
15
20
ns
ns
4.5
4.5
Fig.7
Fig.8
fmax
maximum clock pulse 30
frequency
61
December 1990
9
NXP [ NXP ]
