MAX3140EEI+T Maxim Integrated Products, MAX3140EEI+T Datasheet - Page 30

• Manufacturer Part Number: MAX3140EEI+T
• Description: IC UART W/RS485 28-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX3140EEI+T

• Features: Transceiver
• Fifo's: 8 Byte
• Protocol: RS232, RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• With Irda Encoder/decoder: Yes
• With False Start Bit Detection: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Package / Case: 28-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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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RO
RE
DE
DI
MAX3140
*NOTE: TO SHUT DOWN THE RS-485 TRANSCEIVER, DRIVE RE SEPARATELY WITH AN I/O OF A μP.
D
R
A
B
Z
Y
120Ω
120Ω
B
RE
R
RO
SHDN
V
H/F
CTS
RTS
TX
RX
RO
DI
DE
RE*
SRL
A
CC
D
R
MAX3140
UART
DOUT
SCLK
RXP
DIN
TXP
IRQ
CS
X1
X2
A
B
Y
Z
V
B
CC
RE
FULL-DUPLEX
RS-422 I/O
10k
R
RO
A
120Ω
120Ω
μP
Y
Z
B
A
R
D
RE
DI
DE
RO