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ꢀꢁꢇ ꢃ ꢄꢅ ꢀ ꢆꢂ ꢇ ꢄꢈ ꢉꢀ ꢁꢇ ꢃ ꢄꢅ ꢀꢆ ꢂ ꢊ ꢈ ꢉꢀꢁ ꢇ ꢃ ꢄꢀꢆ ꢂ ꢇ ꢈ ꢉ ꢀ ꢁ ꢇꢃꢄ ꢀ ꢆꢂ
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SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
switching characteristics (see Figure 1)
V
C
R
= 5 V,
= 50 pF,
= 500 Ω,
= 25°C
V
C
R
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
L
CC
L
L
= 500 Ω,
FROM
(INPUT)
TO
(OUTPUT)
†
PARAMETER
UNIT
T
A
T
A
= MIN to MAX
′ALS157A
SN54ALS157A SN74ALS157A
TYP
9
MIN
4
MAX
17
MIN
4
MAX
14
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PLH
PHL
A or B
ns
ns
ns
Y
Y
Y
6
2
15
2
12
15
9
7
28
7
24
A/B
G
4
20
4
17
14
10
7
25
7
20
4
18
4
13
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
switching characteristics (see Figure 1)
V
C
R
= 5 V,
= 50 pF,
= 500 Ω,
= 25°C
V
C
R
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
L
CC
L
L
= 500 Ω,
FROM
PARAMETER
TO
(OUTPUT)
†
UNIT
T
A
T
A
= MIN to MAX
(INPUT)
′ALS158
SN54ALS158
SN74ALS158
TYP
9
MIN
4
MAX
18
MIN
4
MAX
15
8
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PLH
PHL
A or B
A/B
G
ns
ns
ns
Y
Y
Y
5
2
12
2
13
13
13
13
5
22
5
18
18
18
18
5
22
5
5
22
5
5
22
5
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
5
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