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參數(shù)資料
| 型號： | LER245A |
| 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)： | 5/21頁 |
| 文件大?。?/td> | 628K |
| 代理商： | LER245A |
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)
Operating Characteristics
T
A
= 25
°
C
SN74LVCR2245A
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS581M–NOVEMBER 1996–REVISED MARCH 2005
PARAMETER
TEST CONDITIONS
V
CC
MIN TYP
(1)
V
CC
– 0.2
1.2
1.7
2.2
2.4
2
2
MAX
UNIT
I
OH
= –100
μ
A
I
OH
= –2 mA
1.65 V to 3.6 V
1.65 V
2.3 V
2.7 V
3 V
2.7 V
3 V
1.65 V to 3.6 V
1.65 V
2.3 V
2.7 V
3 V
2.7 V
3 V
3.6 V
0
3.6 V
I
OH
= –4 mA
V
OH
V
I
OH
= –6 mA
I
OH
= –8 mA
I
OH
= –12 mA
I
OL
= 100
μ
A
I
OL
= 2 mA
0.2
0.45
0.7
0.4
0.55
0.6
0.8
±
5
±
10
±
10
10
10
500
I
OL
= 4 mA
V
OL
V
I
OL
= 6 mA
I
OL
= 8 mA
I
OL
= 12 mA
I
I
I
off
I
OZ(2)
Control inputs V
I
= 0 to 5.5 V
μ
A
μ
A
μ
A
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
(3)
One input at V
CC
– 0.6 V, Other inputs at V
CC
or GND
Control inputs V
I
= V
CC
or GND
A or B ports
V
O
= V
CC
or GND
I
CC
I
O
= 0
3.6 V
μ
A
I
CC
C
i
C
io
2.7 V to 3.6 V
3.3 V
3.3 V
μ
A
pF
pF
4
5.5
(1)
(2)
(3)
All typical values are at V
= 3.3 V, T
= 25
°
C.
For I/O ports, the parameter I
includes the input leakage current.
This applies in the disabled state only.
V
CC
= 1.8 V
0.15 V
MIN
V
CC
= 2.5 V
±
0.2 V
MIN
V
CC
= 3.3 V
±
0.3 V
MIN
1.5
1.5
1.7
V
CC
= 2.7 V
FROM
(INPUT)
TO
PARAMETER
UNIT
(OUTPUT)
MAX
MAX
MIN
MAX
7.3
9.5
8.5
MAX
6.3
8.2
7.8
t
pd
t
en
t
dis
t
sk(o)
A or B
OE
OE
B or A
A or B
A or B
(1)
(1)
(1)
(1)
ns
ns
ns
ns
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
1
(1)
This information was not available at the time of publication.
V
CC
= 1.8 V
TYP
V
CC
= 2.5 V
TYP
V
CC
= 3.3 V
TYP
48
4
TEST
PARAMETER
UNIT
CONDITIONS
Outputs enabled
Outputs disabled
(1)
(1)
Power dissipation capacitance
per transceiver
C
pd
f = 10 MHz
pF
(1)
(1)
(1)
This information was not available at the time of publication.
5
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