MAX3140 Maxim, MAX3140 Datasheet - Page 30

• Manufacturer Part Number: MAX3140
• Description: SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers
• Manufacturer: Maxim

SPI/MICROWIRE-Compatible UART with Integrated
True Fail-Safe RS-485/RS-422 Transceivers
Figure 26. Typical Full-Duplex Operating Circuit
Figure 27. Typical Full-Duplex RS-422 Network
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*NOTE: TO SHUT DOWN THE RS-485 TRANSCEIVER, DRIVE RE SEPARATELY WITH AN I/O OF A P.
RO
DE
RE
DI
MAX3140
D
R
A
B
Z
Y
120
120
SHDN
V
H/F
CTS
RTS
TX
RX
RO
DI
DE
RE*
SRL
CC
B
RE
D
RO
R
R
MAX3140
A
UART
DOUT
SCLK
RXP
DIN
TXP
IRQ
CS
X1
X2
A
B
Y
Z
V
CC
FULL-DUPLEX
RS-422 I/O
10k
B
RE
R
RO
A
P
120
120
Y
Z
B
A
R
D
DI
DE
RE
RO