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MAX253ESA/V 数据表(PDF) 8 Page - Maxim Integrated Products

部件名 MAX253ESA/V
功能描述  Transformer Driver for Isolated RS-485 Interface
PDF  18 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

MAX253ESA/V 数据表(HTML) 8 Page - Maxim Integrated Products

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Transformer Driver for
Isolated RS-485 Interface
8
_______________________________________________________________________________________
C3
0.1µF
C1
0.1µF
C2
22µF
ISO 5V
ISOLATION
BARRIER
3.3V
VIN
MAX253
D1
D2
GND1
GND2
VCC
1
8
6
27
N.C.
5
1N5817
1N5817
C5
0.1µF
SD
4
ON / OFF
390
Ω
*74HC04
DE
RO
390
Ω
*74HC04
DI
3.3k
Ω
1
3
5
4
6
1
2
4
3
5
4
1
3
6
*74HC04
*74HC04 OR EQUIVALENT
** SEE TABLE 2
MAX667
5
64
SHDN
SET
GND
MAX481
MAX483
MAX485
MAX487
5
2
RE
GND
C4
22µF
IN
OUT
82
1N5817
390
Ω
4
3
1
8
6
7
DI
DE
RO
A
B
PC410 / 417
PC357T
PC410 / 417
1N5817
FS
3
1CT:2.1CT**
VCC
3.3k
Ω
3.3k
Ω
485
I/O
Figure 4. Typical RS-485 Application Circuit, 3.3V Configuration



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