Philips Semiconductors
Product specification
Dual 4-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/HCT153
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
1I
n
, 2I
n
nE
S
n
UNIT LOAD COEFFICIENT
0.45
0.60
1.35
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
T
amb
(°C)
74HCT
SYMBOL PARAMETER
+25
min.
t
PHL
propagation delay
1I
n
to nY;
2I
n
to nY
propagation delay
1I
n
to nY;
2I
n
to nY
propagation delay
S
n
to nY
propagation delay
nE to nY
output transition time
typ.
19
−40
to+85
max. min.
34
max.
43
−40
to+125
min.
max.
51
ns
4.5
Fig.6
UNIT
V
CC
(V)
WAVEFORMS
TEST CONDITIONS
t
PLH
t
PHL
/ t
PLH
t
PHL
/ t
PLH
t
THL
/ t
TLH
13
24
30
36
ns
4.5
Fig.6
20
14
7
34
27
15
43
34
19
51
41
22
ns
ns
ns
4.5
4.5
4.5
Fig.7
Fig.7
Figs 6 and 7
December 1990
6
PHILIPS [ NXP SEMICONDUCTORS ]
