Datasheet
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Switching Characteristics
Switching Characteristics
Switching Characteristics
Operating Characteristics
SN54LV138A, SN74LV138A
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SCLS395L – APRIL 1998 – REVISED AUGUST 2005
over recommended operating free-air temperature range, V
CC
= 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 1 )
T
A
= 25 ° C SN54LV138A
(1)
SN74LV138A
FROM TO LOAD
PARAMETER UNIT
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
A, B, or C 11.7
(2)
17.6
(2)
1
(2)
21
(2)
1 21
t
pd
G1 Y C
L
= 15 pF 12.3
(2)
19.2
(2)
1
(2)
22
(2)
1 22 ns
G2A or G2B 11.4
(2)
18.2
(2)
1
(2)
21
(2)
1 21
A, B, or C 14.9 21.4 1 25 1 25
t
pd
G1 Y C
L
= 50 pF 15.7 22.6 1 26 1 26 ns
G2A or G2B 14.8 22 1 25 1 25
(1) Product Preview
(2) On products compliant to MIL-PRF-38535, this parameter is not production tested.
over recommended operating free-air temperature range, V
CC
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1 )
T
A
= 25 ° C SN54LV138A
(1)
SN74LV138A
FROM TO LOAD
PARAMETER UNIT
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
A, B, or C 8.1
(2)
11.4
(2)
1
(2)
13.5
(2)
1 13.5
t
pd
G1 Y C
L
= 15 pF 8.4
(2)
12.8
(2)
1
(2)
15
(2)
1 15 ns
G2A or G2B 7.8
(2)
11.4
(2)
1
(2)
13.5
(2)
1 13.5
A, B, or C 10.3 15.8 1 18 1 18
t
pd
G1 Y C
L
= 50 pF 10.6 16.3 1 18.5 1 18.5 ns
G2A or G2B 10 14.9 1 17 1 17
(1) Product Preview
(2) On products compliant to MIL-PRF-38535, this parameter is not production tested.
over recommended operating free-air temperature range, V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1 )
T
A
= 25 ° C SN54LV138A
(1)
SN74LV138A
FROM TO LOAD
PARAMETER UNIT
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
A, B, or C 5.6
(2)
8.1
(2)
1
(2)
9.5
(2)
1 9.5
t
pd
G1 Y C
L
= 15 pF 5.7
(2)
8.1
(2)
1
(2)
9.5
(2)
1 9.5 ns
G2A or G2B 5.4
(2)
8.1
(2)
1
(2)
9.5
(2)
1 9.5
A, B, or C 7 10.1 1 11.5 1 11.5
t
pd
G1 Y C
L
= 50 pF 7.1 10.1 1 11.5 1 11.5 ns
G2A or G2B 6.8 10.1 1 11.5 1 11.5
(1) Product Preview
(2) On products compliant to MIL-PRF-38535, this parameter is not production tested.
T
A
= 25 ° C
PARAMETER TEST CONDITIONS V
CC
TYP UNIT
3.3 V 16.8
C
pd
Power dissipation capacitance C
L
= 50 pF, f = 10 MHz pF
5 V 19.1
6