max253cuat Maxim Integrated Products, Inc., max253cuat Datasheet - Page 6
max253cuat
Manufacturer Part Number
max253cuat
Description
Max253 Transformer Driver For Isolated Rs-485 Interface
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX253CUAT.pdf
(16 pages)
- Current page: 6 of 16
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Transformer Driver for
Isolated RS-485 Interface
Figure 3. Typical RS-485 Application Circuit, 5V Configuration
6
_______________________________________________________________________________________
V
5V
IN
ON / OFF
RO
DE
DI
*
**
C1
0.1µF
*
*
*
74HC04 OR EQUIVALENT
74HC04
74HC04
74HC04
SEE TABLE 2
4
SD
GND1
2
MAX253
GND2
V
3.3k
7
390
390
CC
6
D1
D2
FS
3
1
8
1
1
6
5
ICT:1.3CT**
4
ISOLATION
BARRIER
PC410 / 417
PC410 / 417
2
3
PC357T
1N5817
1N5817
3
4
3
6
5
4
1
0.1µF
C3
390
3.3k
C2
22µF
8
3.3k
IN
SET
4
3
1
6
MAX667
DI
DE
RO
GND
RE
4
MAX481
MAX483
MAX485
MAX487
2
SHDN
8
V
CC
OUT
5
GND
5
2
A
B
C4
22µF
6
7
ISO 5V
485
I/O
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