Datasheet

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
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
= 5 V,
C
L
= 50 pF,
R
L
= 500 Ω
,
T
A
= 25°C
V
CC
= 4.5 V to 5.5 V,
C
L
= 50 pF,
R
L
= 500 Ω
,
T
A
= MIN to MAX
†
UNIT
PARAMETER
(INPUT)
(OUTPUT)
′ALS157A SN54ALS157A SN74ALS157A
UNIT
TYP MIN MAX MIN MAX
t
PLH
A or B
Y
9 4 17 4 14
ns
t
PHL
A or B
Y
6 2 15 2 12
ns
t
PLH
A/B
Y
15 7 28 7 24
ns
t
PHL
A/B Y
9 4 20 4 17
ns
t
PLH
G
Y
14 7 25 7 20
ns
t
PHL
G
Y
10 4 18 4 13
ns
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
= 5 V,
C
L
= 50 pF,
R
L
= 500 Ω,
T
A
= 25°C
V
CC
= 4.5 V to 5.5 V,
C
L
= 50 pF,
R
L
= 500 Ω,
T
A
= MIN to MAX
†
UNIT
PARAMETER
(INPUT)
(OUTPUT)
′ALS158 SN54ALS158 SN74ALS158
UNIT
TYP MIN MAX MIN MAX
t
PLH
A or B
Y
9 4 18 4 15
ns
t
PHL
A or B
Y
5 2 12 2 8
ns
t
PLH
A/B
Y
13 5 22 5 18
ns
t
PHL
A/B Y
13 5 22 5 18
ns
t
PLH
G
Y
13 5 22 5 18
ns
t
PHL
G
Y
13 5 22 5 18
ns
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.