Philips Semiconductors
Product specification
8-input multiplexer
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
I
CC
category: MSI
Note to HCT types
74HC/HCT151
The value of additional quiescent supply current (∆I
CC
) for a unit load of 1 is given in the family specifications.
To determine
∆I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
I
n
S
n
E
UNIT LOAD COEFFICIENT
0.45
1.50
0.30
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
T
amb
(°C)
74HCT
SYMBOL PARAMETER
min.
t
PHL
/ t
PLH
t
PHL
/ t
PLH
t
PHL
/ t
PLH
t
PHL
/ t
PLH
t
PHL
/ t
PLH
t
PHL
/ t
PLH
t
THL
/ t
TLH
propagation delay
I
n
to Y
propagation delay
I
n
to Y
propagation delay
S
n
to Y
propagation delay
S
n
to Y
propagation delay
E to Y
propagation delay
E to Y
output transition time
+25
typ.
22
22
23
25
16
21
7
−40
to
+85
max. min.
38
38
41
43
29
36
15
max.
48
48
51
54
36
45
19
−40
to
+125
min.
max.
57
57
62
65
44
54
22
ns
ns
ns
ns
ns
ns
ns
4.5
4.5
4.5
4.5
4.5
4.5
4.5
Fig.6
Fig.6
Fig.7
Fig.7
Fig.7
Fig.7
Figs 6 and 7
UNIT
V
CC
(V)
WAVEFORMS
TEST CONDITIONS
December 1990
6
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
