3.0V, ±15kV ESD-Protected RS-232
Transceiver for PDAs and Cell Phones
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
NAME
C1+
V+
C1-
C2+
C2-
V-
T1IN
T2IN
T3IN
R2OUT
R1OUT
V
L
R2IN
RS-232 Receiver Inputs
R1IN
T3OUT
T2OUT
T1OUT
GND
V
CC
SHDN
Ground
+3.0V to +5.5V Supply Voltage
Shutdown Input. 0 = shutdown, 1 = normal operation.
RS-232 Transmitter Outputs
TTL/CMOS Receiver Outputs. Swing between 0 and V
L
.
Logic-Level Supply. All CMOS inputs and outputs are referenced to this supply.
TTL/CMOS Transmitter Inputs
FUNCTION
Positive Terminal of the Voltage-Doubler Charge-Pump Capacitor
+5.5V Supply Generated by the Charge Pump
Negative Terminal of the Voltage-Doubler Charge-Pump Capacitor
Positive Terminal of the Inverting Charge-Pump Capacitor
Negative Terminal of the Inverting Charge-Pump Capacitor
-5.5V Generated by the Charge Pump
MAX3386E
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
