Datasheet

MAX3130/MAX3131
3V to 5.5V, IrDA Infrared Transceiver with
Integrated RS-232 Interface
14 ______________________________________________________________________________________
RTS
CTS
Tx
Rx
T1IN
R1OUT
T2IN
R2OUT
TXD
RXD
BAUD16
T1OUT
R1IN
T2OUT
R2IN
LEDC
PINC
MAX3131
MAX3100
UART2
µP
IrDA
RS-232
1 2 3 4 5
6 7 8 9
DB-9
NON-IrDA UART
(UART1)
TX
RX
BAUD16
SPI
DIN
DOUT
SCLK
CS
Figure 5. Using the MAX3131 and Two UARTs to Perform Simultaneous IrDA and RS-232 Communication
Table 2. Required Capacitor Values
STANDARD
NON-IrDA
UART
RTS
CTS
Tx
Rx
BAUD16
T1IN
R1OUT
T2IN
R2OUT
BAUD16
T1OUT
R1IN
T2OUT
R2IN
LEDC
PINC
MAX3130
IRMODE
µP
I/O
232
IrDA
IrDA
RS-232
1 2 3 4 5
6 7 8 9
DB-9
Figure 4. Using the MAX3130 and a Single UART to Perform Both IrDA and RS-232 Communication
V
CC
(V) C1 (µF) C2, C3, C4 (µF)
3.0 to 3.6 0.1 0.1
4.5 to 5.5 0.047 0.33
3.0 to 5.5 0.1 0.47