Datasheet

December 1990 9
Philips Semiconductors Product specification
Johnson decade counter with 10 decoded outputs 74HC/HCT4017
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
=t
f
= 6 ns; C
L
= 50 pF
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS
+25 −40 to+85 −40 to+125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
CP
0
to Q
n
25 46 58 69 ns 4.5 Fig.9
t
PHL
/ t
PLH
propagation delay
CP
0
to Q
5-9
25 46 58 69 ns 4.5 Fig.9
t
PHL
/ t
PLH
propagation delay
CP
1
to Q
n
25 50 63 75 ns 4.5 Fig.9
t
PHL
/ t
PLH
propagation delay
CP
1
to Q
5-9
25 50 63 75 ns 4.5 Fig.9
t
PHL
propagation delay
MR to Q
1−9
22 46 58 69 ns 4.5 Fig.8
t
PLH
propagation delay
MR to Q
5−9
, Q
0
20 46 58 69 ns 4.5 Fig.8
t
THL
/ t
TLH
output transition time 7 15 19 22 ns 4.5 Fig.9
t
W
clock pulse width
HIGH or LOW
16 7 20 24 ns 4.5 Fig.8
t
W
master reset pulse
width; HIGH
16 4 20 24 ns 4.5 Fig.8
t
rem
removal time
MR to CP
0
, CP
1
5 −5 5 5 ns 4.5 Fig.8
t
su
set-up time
CP
1
to CP
0
;
CP
0
to CP
1
10 −3 13 15 ns 4.5 Fig.7
t
h
hold time
CP
0
to CP
1
;
CP
1
to CP
0
10 6 13 15 ns 4.5 Fig.7
f
max
maximum clock pulse
frequency
30 61 24 20 ns 4.5 Fig.8