Datasheet
SN54LV244A
SN74LV244A
www.ti.com
SCLS383M –SEPTEMBER 1997–REVISED JULY 2013
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, V
CC
= 3.3 V ± 0.3 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
SN54LV244A
(1)
SN74LV244A SN74LV244A
TYP MAX MIN MAX MIN MAX MIN MAX
t
pd
A Y 5.4
(2)
8.4
(2)
1
(2)
10
(2)
1 10 1 10
t
en
OE Y C
L
= 15 pF 6.3
(2)
10.6
(2)
1
(2)
12.5
(2)
1 12.5 1 12.5
t
dis
OE Y 7.6
(2)
11.7
(2)
1
(2)
13
(2)
1 13 1 13
t
pd
A Y 6.8 11.9 1 13.5 1 13.5 1 13.5 ns
t
en
OE Y C
L
= 50 pF 7.8 14.1 1 16 1 16 1 16
t
dis
OE Y 11 16 1 18 1 18 1 18
t
sk(o)
1.5 1.5 1.5
(1) Product Preview
(2) On products compliant to MIL-PRF-38535, this parameter is not production tested.
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
SN54LV244A
(1)
SN74LV244A SN74LV244A
TYP MAX MIN MAX MIN MAX MIN MAX
t
pd
A Y 3.9
(2)
5.5
(2)
1
(2)
6.5
(2)
1 6.5 1 6.5
t
en
OE Y C
L
= 15 pF 4.5
(2)
7.3
(2)
1
(2)
8.5
(2)
1 8.5 1 8.5
t
dis
OE Y 6.5
(2)
12.2
(2)
1
(2)
13.5
(2)
1 13.5 1 13.5
t
pd
A Y 4.9 7.5 1 8.5 1 8.5 1 8.5 ns
t
en
OE Y C
L
= 50 pF 5.6 9.3 1 10.5 1 10.5 1 10.5
t
dis
OE Y 8.8 14.2 1 15.5 1 15.5 1 15.5
t
sk(o)
1 1
(1) Product Preview
(2) On products compliant to MIL-PRF-38535, this parameter is not production tested.
NOISE CHARACTERISTICS
V
CC
= 3.3 V, C
L
= 50 pF, T
A
= 25°C
(1)
SN74LV244A
UNIT
MIN TYP MAX
V
OL(P)
Quiet output, maximum dynamic 0.55 V
V
OL(V)
Quiet output, minimum dynamic –0.5 V
V
OH(V)
Quiet output, minimum dynamic 2.9 V
V
IH(D)
High-level dynamic input voltage 2.31 V
V
IL(D)
Low-level dynamic input voltage 0.99 V
(1) Characteristics are for surface-mount packages only.
OPERATING CHARACTERISTICS
T
A
= 25°C
PARAMETER TEST CONDITIONS V
CC
TYP UNIT
3.3 V 14
C
pd
Power dissipation capacitance C
L
= 50 pF, f = 10 MHz pF
5 V 16
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