Datasheet
SN54AHC125
SN74AHC125
SCLS256K –DECEMBER 1995–REVISED JUNE 2013
www.ti.com
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
T
A
= –40°C TO
T
A
= –55°C TO T
A
= –40°C TO
125°C
125°C 85°C
T
A
= 25°C
FROM TO LOAD
Recommended
PARAMETER UNIT
(INPUT) (OUTPUT) CAPACITANCE
SN54AHC125 SN74AHC125 SN74AHC125
TYP MAX MIN MAX MIN MAX MIN MAX
t
PLH
3.8
(1)
5.5
(1)
1
(1)
6.5
(1)
1 6.5 1 6.5
A Y C
L
= 15 pF ns
t
PHL
3.8
(1)
5.5
(1)
1
(1)
6.5
(1)
1 6.5 1 6.5
t
PZH
3.6
(1)
5.1
(1)
1
(1)
6
(1)
1 6 1 6
OE Y C
L
= 15 pF ns
t
PZL
3.6
(1)
5.1
(1)
1
(1)
6
(1)
1 6 1 6
t
PHZ
4.6
(1)
6.8
(1)
1
(1)
8
(1)
1
(1)
8
(1)
1
(1)
8
(1)
OE Y C
L
= 15 pF ns
t
PLZ
4.6
(1)
6.8
(1)
1
(1)
8
(1)
1
(1)
8
(1)
1
(1)
8
(1)
t
PLH
5.3 7.5 1 8.5 1 8.5 1 8.5
A Y C
L
= 50 pF ns
t
PHL
5.3 7.5 1 8.5 1 8.5 1 8.5
t
PZH
5.1 7.1 1 8 1 8 1 8
OE Y C
L
= 50 pF ns
t
PZL
5.1 7.1 1 8 1 8 1 8
t
PHZ
6.1 8.8 1 10 1 10 1 10
OE Y C
L
= 50 pF ns
t
PLZ
6.1 8.8 1 10 1 10 1 10
tsk(o) OE Y C
L
= 50 pF 1
(2)
1 ns
(1) On products compliant to MIL-PRF-38535, this parameter is not production tested.
(2) On products compliant to MIL-PRF-38535, this parameter does not apply.
NOISE CHARACTERISTICS
V
CC
= 5 V, C
L
= 50 pF, T
A
= 25°C
(1)
SN74AHC125 UNIT
PARAMETER
MIN MAX
V
OL(P)
Quiet output, maximum dynamic V
OL
0.8 V
V
OL(V)
Quiet output, minimum dynamic V
OL
–0.8 V
V
OH(V)
Quiet output, minimum dynamic V
OH
4.4 V
V
IH(D)
High-level dynamic input voltage 3.5 V
V
IL(D)
Low-level dynamic input voltage 1.5 V
(1) Characteristics are for surface-mount packages only.
OPERATING CHARACTERISTICS
V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load, f = 1 MHz 9.5 pF
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