MAX3111EEWI+TG36 Maxim Integrated Products, MAX3111EEWI+TG36 Datasheet - Page 26

• Manufacturer Part Number: MAX3111EEWI+TG36
• Description: IC UART SPI COMPAT 28-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX3111EEWI+TG36

• Features: Transceiver
• Number Of Channels: 1, UART
• Protocol: RS232, RS485
• Voltage - Supply: 3 V ~ 3.6 V
• With Irda Encoder/decoder: Yes
• With False Start Bit Detection: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SPI/MICROWIRE-Compatible UART and ±15kV ESD-
Protected RS-232 Transceivers with Internal Capacitors
Table 9. Logic-Family Compatibility with
Various Supply Voltages
Figure 14. IR and RS-232 Typical Operating Circuit
26
POWER-SUPPLY
(MAX3110E)
(MAX3111E)
(MAX3111E)
VOLTAGE
______________________________________________________________________________________
LOGIC
3.3
(V)
5
5
V
CC
VOLTAGE
SUPPLY
3.3
3.3
(V)
5
μP
NON-IrDA
UART
232 SHUTDOWN
CTS
RTS
TX
RX
Compatible with all
TTL and CMOS fami-
lies
Compatible with all
CMOS families
Compatible with ACT
and HCT CMOS, and
with AC, HC, or
CD4000 CMOS
100k
COMPATIBILITY
232 ACTIVE
V
CC
IRQ
V
SHDN
DIN
DOUT
SCLK
CS
T1IN
R1OUT
R2OUT
T2IN
C1+
C1-
CC
GND
MAX3110E
MAX3111E
MODE
UART
IrDA
IN
T1OUT
T2OUT
R1IN
R2IN
C2+
C2-
RX
TX
X1
X2
V+
V-
An IR and RS-232 typical operating circuit is shown in
Figure 14. Since the MAX3110E/MAX3111E’s internal
UART has IrDA capability, a standard IR transceiver
(the MAX3120) can be used to provide the IrDA com-
munication. The two-driver/two-receiver RS-232 trans-
ceiver can be used with a software UART to provide
RS-232 communication.
The MAX3110E/MAX3111E support a common multi-
drop communication technique referred to as 9-bit
mode. In this mode, the parity bit is set to indicate a
message that contains a header with a destination
address. The MAX3110E/MAX3111E’s parity mask can
be set to generate interrupts for this condition.
Operating a network in this mode reduces the process-
ing overhead of all nodes by enabling the slave con-
trollers to ignore most message traffic. This relieves the
remote processor to handle more useful tasks.
RS-232 I/O
RXD
MAX3120
TXD
IrDA
I/O
9-Bit Networks