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MAX3162 View Datasheet(PDF) - Maxim Integrated

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MAX3162 Datasheet PDF : 23 Pages
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+3.0V to+5.5V, 1µA, RS-232/RS-485/422
Multiprotocol Transceivers
RO
RE485
DE485
DI
MAX3160
MAX3161
MAX3162
A 120
R
B
DATA IN
Z 120
D
Y
DATA OUT
NOTE: RE485 ON MAX3162 ONLY
Figure 14. RS-485 Line Repeater
Multiprotocol Bus Multiplexer
The Typical Application Circuit shows the MAX3161 con-
figured as a multiprotocol bus multiplexer. The MAX3161
separates the RS-232 and RS-485 lines, but shares the
logic pins between modes. This application allows the
µP to monitor a point-to-point RS-232 bus, and a mul-
tidrop RS-485 interface. The MAX3100 UART asynchro-
nously transfers data through the MAX3161 to the
pin-selected RS-232 or RS-485 protocol.
3.3V
CBYPASS
100nF
C2
100nF
RCV
TX
RTS
23 C2+
2
VCC
1
C1+
22
C2- MAX3162
C1- 3
13 SHDN
5
T1OUT
10 R2OUT
23 DI
19 R2IN
20
R1IN
24
T1IN
11
RO 9
R1OUT
12
RE485
22
TE485
A 17
15 RE232
16
TE232
14
FAST
28 V+
GND
B 18
6
Z
7
Y
V- 25
C3
100nF
C1
100nF
C4
100nF
Figure 15. Protocol Translator
20 ______________________________________________________________________________________
 

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