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| 型號： | LC245A |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS |
| 中文描述： | 八路總線收發(fā)器具有三態(tài)輸出 |
| 文件頁數(shù)： | 5/19頁 |
| 文件大?。?/td> | 585K |
| 代理商： | LC245A |
www.ti.com
Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
Switching Characteristics
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
SN74LVC245A
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS218T–JANUARY 1993–REVISED FEBRUARY 2005
T
A
= 25
°
C
MIN
–40
°
C TO 85
°
C
MIN MAX
V
CC
– 0.2
1.2
1.7
2.2
2.4
2.2
PARAMETER
TEST CONDITIONS
V
CC
UNIT
TYP MAX
I
OH
= –100
μ
A
I
OH
= –4 mA
I
OH
= –8 mA
1.65 V to 3.6 V
1.65 V
2.3 V
2.7 V
3 V
3 V
1.65 V to 3.6 V
1.65 V
2.3 V
2.7 V
3 V
3.6 V
0
3.6 V
V
CC
– 0.2
1.29
1.9
2.2
2.4
2.3
V
OH
V
I
OH
= –12 mA
I
OH
= –24 mA
I
OL
= 100
μ
A
I
OL
= 4 mA
I
OL
= 8 mA
I
OL
= 12 mA
I
OL
= 24 mA
V
I
= 0 to 5.5 V
V
I
or V
O
= 5.5 V
V
O
= 0 to 5.5 V
V
I
= V
CC
or GND
3.6 V
≤
V
I
≤
5.5 V
(2)
One input at V
– 0.6 V,
Other inputs at V
CC
or GND
V
I
= V
CC
or GND
V
I
= V
CC
or GND
0.1
0.24
0.3
0.4
0.55
±
1
±
1
±
1
0.2
0.45
0.7
0.4
0.55
±
5
±
10
±
10
10
10
V
OL
V
I
I
I
off
I
OZ(1)
Control inputs
μ
A
μ
A
μ
A
1
1
I
CC
I
O
= 0
3.6 V
μ
A
I
CC
2.7 V to 3.6 V
500
500
μ
A
C
i
C
io
Control inputs
A or B ports
3.3 V
3.3 V
4
pF
pF
5.5
(1)
(2)
For I/O ports, the parameter I
includes the input leakage current.
This applies in the disabled state only.
T
A
= 25
°
C
MIN
1
1
1
1.5
1
1
1
1.5
1
1
1
1.7
–40
°
C TO 85
°
C
MIN
1
1
1
1.5
1
1
1
1.5
1
1
1
1.7
FROM
(INPUT)
TO
PARAMETER
V
CC
UNIT
(OUTPUT)
TYP
MAX
12.2
7.8
7.1
6.1
14.8
10
9.3
8.3
16.5
MAX
12.7
8.3
7.3
6.3
15.3
10.5
9.5
8.5
17
9.5
8.5
7.5
1.8 V
±
0.15 V
2.5 V
±
0.2 V
2.7 V
3.3 V
±
0.3 V
1.8 V
±
0.15 V
2.5 V
±
0.2 V
2.7 V
3.3 V
±
0.3 V
1.8 V
±
0.15 V
2.5 V
±
0.2 V
2.7 V
3.3 V
±
0.3 V
3.3 V
±
0.3 V
6
3.9
4.2
3.8
t
pd
A or B
B or A
ns
7
4.5
5.4
4.4
7.8
t
en
OE
A or B
ns
4
9
t
dis
OE
A or B
ns
4.4
4.1
8.3
7.3
t
sk(o)
1
ns
5
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