Datasheet

SPI/I
2
C UART with 128-Word FIFOs
MAX3107
50 Maxim Integrated
Figure 26. RS-232 Application
Figure 27. RS-485 Half-Duplex Application
MAX3107
TX
RX
Tx
Rx
SPI/I
2
C
MAX3245
T1IN
R1OUT
MICROCONTROLLER
RST
LDOEN
IRQ
RTS/CLKOUT
CTS
RTS
CTS
T2IN
R2OUT
GPIO0
GPIO1
DTR
DSR
T3IN
R3OUT
GPIO2
GPIO3
DCD
RI
R4OUT
R5OUT
MAX14840
A
B
DI
RO
RE
DE
MAX3107
TX
RX
XOUT
AGND V18
DGND
100nF
V
EXT
V
A
V
L
IRQ
SPI/I
2
C
LDOEN
RST
XIN
SPI
3.3V
MICROCONTROLLER
CLOCK
RTS
10kΩ
1µF
100nF