Datasheet

MAX3130/MAX3131
3V to 5.5V, IrDA Infrared Transceiver with
Integrated RS-232 Interface
10 ______________________________________________________________________________________
MAX3131
Rx
RxIN
TxIN
Tx
ENDEC
CHARGE PUMP
1µF
R
SET
GND
V
CC
1µF
AGND
AV
CC
PINC
PGND
LEDC
R2IN
R1IN
V-
C4
C3
T1OUT
T2OUT
RS-232
INPUTS
RS-232
OUTPUTS
OFF
ON
OFF
ON
RS-232
RECEIVE
LOGIC
OUTPUTS
IrDA RECEIVE
LOGIC
OUTPUT
RS-232
TRANSMIT
LOGIC
INPUTS
IrDA TRANSMIT
LOGIC INPUT
C1+
C1
C2
C1-
C2+
C2-
IRSD
BIAS
5k
5k
BAUD16
R1OUT
R2OUT
T1IN
T2IN
TXD
RXD
f
BAUD16
V+
RSSD
SHDN
1.2V
Figure 2. MAX3131 Functional Diagram