MAX3140 Maxim, MAX3140 Datasheet - Page 31

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

Figure 28. Typical IR and RS-485 Operating Circuit
SPI/MICROWIRE-Compatible UART with Integrated
*NOTE: TO SHUT DOWN THE RS-485 TRANSCEIVER, DRIVE RE SEPARATELY.
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True Fail-Safe RS-485/RS-422 Transceivers
V
CC
P
SOFTWARE
NON-IrDA
10k
UART
RTS
+5V
RX
TX
V
FLOAT
CC
100k
V
H/F
IRQ
DIN
DOUT
SCLK
CS
RO
DI
DE
RE*
SRL
CC
D
R
MAX3140
MODE
UART
IrDA
IN
RXP
TXP
TX
RX
X1
X2
Z
Y
HALF-DUPLEX
RS-485 I/O
MAX3120
IrDA
I/O
31