參數(shù)資料
型號: MAX1490A
廠商: Maxim Integrated Products, Inc.
英文描述: Complete, Isolated RS-485/RS-422 Data Interface(2.5Mbps,全雙工,完全隔離的RS-485/422收發(fā)器)
中文描述: 完備的隔離型、RS-485/RS-422數(shù)據(jù)接口
文件頁數(shù): 13/20頁
文件大?。?/td> 315K
代理商: MAX1490A
M
Complete, Isolated,
RS -485/RS -422 Data Interfac e
______________________________________________________________________________________
13
Figure 4. Driver DC Test Load
R
R
V
OD
V
OC
D
ISOLATION BARRIER
Figure 5. Driver/Receiver Timing Test Circuit
DI
(DE
)
C
L1
(V
CC_
- 0.4V)
C
L2
RO(RO)*
R
DIFF
V
ID
ISOLATION BARRIER
( ) ARE FOR
THE MAX1480A/B
* OPTOCOUPLER
OUTPUTS. SEE FIGURES 1
AND 2 FOR DETAILED BLOCK
DIAGRAM AND TYPICAL
APPLICATION CIRCUIT.
ISOLATION BARRIER
R
D
_________________________________________________________________Test Circ uits
28
27
26
25
24
23
22
21
1
2
3
4
5
6
7
8
AC1
V
IN
5V
SHUTDOWN
Si943304
DI
GND
DE
R1
R2
R3
P
RO
AC2
ISOV
CC1
B
D2
D1
V
CC2
V
CC1
ISORODRV
A
ISODI IN
ISODE IN
V
CC3
SD
FS
GND1
20
19
18
17
9
10
11
12
ISOCOM1
ISODI DRV
ISOV
CC2
ISODE DRV
GND2
DE
V
CC4
DI
16
15
13
14
ISOCOM2
ISOROLED
V
CC5
RO
MAX485
MAX253
ISOLATION BARRIER
MAX1480A
Figure 3. MAX1480A Low-Power Shutdown Mode
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