參數(shù)資料
型號(hào): ISO422P-U
元件分類: 收發(fā)器
英文描述: Transceiver
中文描述: 收發(fā)器
文件頁數(shù): 8/9頁
文件大?。?/td> 246K
代理商: ISO422P-U
ISO422
SBOS113A
8
FIGURE 7. Suggested Bus Termination Methods.
FIGURE 8. Isolated RS232 to RS422. Null Modem Configuration.
1.2k
R
120
Half Duplex
Full Duplex
1.2k
Half-duplex and Full-duplex resistor
values are the same. Half-duplex line
should be terminated at both ends.
+5V Isolated
+5V
+5V
ISO422
1.2k
(1)
1.2k
(1)
R
120
9
10
8
MAX202
7
TD
RD
SG
DTR
DSR
CD
RTS
CTS
2
3
D25
7
20
6
8
4
5
3
2
D9
5
4
6
1
7
8
+5V Isolated
ISO422
1.2k
(1)
1.2k
(1)
R
120
10
9
GND
B
GND Isolation
GND Isolation
GND
A
7
MAX202
8
RD
TD
SG
DTR
DSR
CD
RTS
CTS
NOTE: (1) If using screened cable or ground
wire, connected as shown, shaded resistors
may be omitted. If using only twisted pairs,
shaded resistors are recommended.
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