SN54LVC138A, SN74LVC138A
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SCAS291T – MARCH 1993 – REVISED JULY 2005
www.ti.com
Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
I
OH
= –100
µA
I
OH
= –4 mA
V
OH
I
OH
= –8 mA
I
OH
= –12 mA
I
OH
= –24 mA
I
OL
= 100
µA
V
OL
I
OL
= 4 mA
I
OL
= 8 mA
I
OL
= 12 mA
I
OL
= 24 mA
I
I
I
CC
∆I
CC
C
i
(1)
V
I
= 5.5 V or GND
V
I
= V
CC
or GND,
I
O
= 0
One input at V
CC
– 0.6 V,
Other inputs at V
CC
or GND
V
I
= V
CC
or GND
V
CC
1.65 V to 3.6 V
2.7 V to 3.6 V
1.65 V
2.3 V
2.7 V
3V
3V
1.65 V to 3.6 V
2.7 V to 3.6 V
1.65 V
2.3 V
2.7 V
3V
3.6 V
3.6 V
2.7 V to 3.6 V
3.3 V
5
0.4
0.55
±5
10
500
5
0.2
0.45
0.7
0.4
0.55
±5
10
500
µA
µA
µA
pF
V
2.2
2.4
2.2
V
CC
– 0.2
1.2
1.7
2.2
2.4
2.2
0.2
V
SN54LVC138A
MIN
TYP
(1)
MAX
SN74LVC138A
MIN
V
CC
– 0.2
TYP
(1)
MAX
UNIT
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
Switching Characteristics
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
SN54LVC138A
PARAMETER
FROM
(INPUT)
A or B or C
t
pd
G2A or G2B
G1
Y
TO
(OUTPUT)
V
CC
= 2.7 V
MIN
MAX
7.9
7.4
6.4
V
CC
= 3.3 V
±
0.3 V
MIN
1
1
1
MAX
6.7
6.5
5.8
ns
UNIT
Switching Characteristics
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
SN74LVC138A
PARAMETER
FROM
(INPUT)
A or B or C
t
pd
t
sk(o)
G2A or G2B
G1
Y
TO
(OUTPUT)
V
CC
= 1.8 V
±
0.15 V
MIN
1
1
1
MAX
22
21
20.3
V
CC
= 2.5 V
±
0.2 V
MIN
1
1
1
MAX
9.9
9.4
8.4
V
CC
= 2.7 V
MIN
1
1
1
MAX
7.9
7.4
6.4
V
CC
= 3.3 V
±
0.3 V
MIN
1
1
1
MAX
6.7
6.5
5.8
1
ns
ns
UNIT
6
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