MAX3110E Maxim, MAX3110E Datasheet - Page 26
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MAX3110E
Manufacturer Part Number
MAX3110E
Description
SPI/MICROWIRE-Compatible UART and 15kV ESDProtected RS-232 Transceivers with Internal Capacitors
Manufacturer
Maxim
Datasheet
1.MAX3110E.pdf
(32 pages)
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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
P
NON-IrDA
UART
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
232 SHUTDOWN
COMPATIBILITY
CTS
RTS
RX
TX
100k
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
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.
T1OUT
T2OUT
R1IN
R2IN
C2+
C2-
RX
X1
X2
TX
V+
V-
RS-232 I/O
RXD
MAX3120
TXD
9-Bit Networks
IrDA
I/O