Datasheet

MAX3311/MAX3313
460kbps, 1µA Supply Current,
RS-232-Compatible Transceivers in µMAX
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= +5V, 0.1µF capacitors, transmitter loaded with 3kΩ and C
L
, T
A
= +25°C, unless otherwise noted.)
0
4
2
8
6
12
10
14
0 1000 1500500 2000 2500 3000
SLEW RATE
vs. LOAD CAPACITANCE
MAX3311/13 toc01
LOAD CAPACITANCE (pF)
SLEW RATE (V/µs)
+SLEW
250 kbps DATA RATE
-SLEW
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
0 500 10001500200025003000
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX3311/13 toc02
LOAD CAPACITANCE (pF)
TRANSMITTER OUTPUT VOLTAGE (V)
460kbps/250kbps/120kbps
460kbps/250kbps/120kbps
0
4
2
8
6
12
10
14
0 1000 1500500 2000 2500 3000
SUPPLY CURRENT
vs. LOAD CAPACITANCE
MAX3311/13 toc03
LOAD CAPACITANCE (pF)
SUPPLY CURRENT (mA)
20kbps
120kbps
250kbps
460kbps
Pin Description
PIN
MAX3311 MAX3313
NAME FUNCTION
11V
CC
+5V External Power Supply. Decouple with a 0.1µF capacitor to ground.
2 2 C1- Negative Terminal of the Voltage Inverter Charge-Pump Capacitor
3 — SHDN Shutdown Active-Low (0 = off, 1 = on)
— 3 INVALID
Valid Signal Detector Output, Active-Low. A logic high indicates that a valid
RS-232 level is present on the receiver input.
4 4 TIN TTL/CMOS Transmitter Input
5 5 ROUT TTL/CMOS Receiver Output
6 6 RIN RS-232 Receiver Input
7 7 TOUT RS-232-Compatible Transmitter Output
8 8 V- -4.3V generated by the charge pump. Connect a 0.1µF capacitor to ground.
9 9 C1+ Positive Terminal of the Voltage Inverter Charge-Pump Capacitor
10 10 GND Ground