Philips Semiconductors
Product specification
8-input multiplexer; 3-state
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
I
CC
category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
T
amb
(°C)
74HC
SYMBOL PARAMETER
+25
−40
to
+85
max.
215
43
37
220
44
37
255
51
43
255
51
43
175
35
30
170
35
30
95
19
16
−40
to
+125
min. max.
255
51
43
265
53
45
310
62
53
310
62
53
210
42
36
210
42
36
110
22
19
ns
74HC/HCT251
TEST CONDITIONS
UNIT V
WAVEFORMS
CC
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Fig.6
min. typ. max. min.
t
PHL
/ t
PLH
propagation delay
I
n
to Y
propagation delay
I
n
to Y
propagation delay
S
n
to Y
propagation delay
S
n
to Y
3-state output enable time
OE to Y, Y
3-state output disable time
OE to Y, Y
output transition time
50
18
14
55
20
16
66
24
19
69
25
20
36
13
10
39
14
11
19
7
6
170
34
29
175
35
30
205
41
35
205
41
35
140
28
24
140
28
24
75
15
13
t
PHL
/ t
PLH
ns
Fig.7
t
PHL
/ t
PLH
ns
Fig.6
t
PHL
/ t
PLH
ns
Fig.7
t
PZH
/ t
PZL
ns
Fig.7
t
PHZ
/ t
PLZ
ns
Fig.7
t
THL
/ t
TLH
ns
Figs 6 and 7
December 1990
5
PHILIPS [ NXP SEMICONDUCTORS ]
