Datasheet

66 Maxim Integrated
Quad Serial UART with 128-Word FIFOs
MAX14830
Typical Operating Circuits (continued)
A0
DI
TX0LDOEN
1µF
0.1µF
3.3V
V
A
V
EXT
V
L
MOSI
MISO
SCLK
RX0
RO
DE
B0
RE
MAX14840
A1
DI
RO
DE
B1
RE
MAX14840
A2
DI
RO
DE
B2
RE
MAX14840
A3
DI
RO
DE
B3
RE
MAX14840
RTS0
MICROCONTROLLER
TX0
MOSI
SCLK
IRQ
SS
TX1
RX1
RTS1
TX2
RX2
RTS2
TX3
RX3
RTS3
DGNDAGND
SPI/I
2
C
V
18
0.1µF 0.1µF
IRQ
CS
QUAD RS-485 INTERFACE CONTROLLED THROUGH SPI
MAX14830
XIN
XOUT