Datasheet

MAX3384E
±15kV ESD-Protected, 3.0V to 5.5V, Low-Power,
up to 250kbps, True RS-232 Transceiver
4 _______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(V
CC
= +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩ and C
L
, T
A
= +25°C, unless otherwise noted.)
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
0 1000 2000 3000 4000 5000
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX3384E-01
LOAD CAPACITANCE (pF)
TRANSMITTER OUTPUT VOLTAGE (V)
T1 TRANSMITTING AT 250kbps
T2 TRANSMITTING AT 15.6kbps
V
OUT+
V
OUT-
0
6
2
4
10
8
14
12
16
0 1000 2000 3000 4000 5000
SLEW RATE vs. LOAD CAPACITANCE
MAX3884E-02
LOAD CAPACITANCE (pF)
SLEW RATE (V/µs)
+SLEW
FOR DATA RATES UP TO 250kbps
-SLEW
0
25
20
15
5
10
35
30
40
45
0 20001000 3000 4000 5000
OPERATING SUPPLY CURRENT
vs. LOAD CAPACITANCE
MAX3884E-03
LOAD CAPACITANCE (pF)
SUPPLY CURRENT (mA)
250kbps
120kbps
20kbps
T1 TRANSMITTING AT 250kbps
T2 TRANSMITTING AT 15.6kbps
1 No Connection. Not internally connected.N.C.
3 +5.5V generated by the charge pump.V+
4 Negative terminal of the voltage-doubler charge-pump capacitor.C1-
5 Positive terminal of inverting charge-pump capacitor.C2+
6 Negative terminal of inverting charge-pump capacitor.C2-
7 -5.5V generated by the charge pump.V-
8, 15
RS-232 Transmitter Outputs. High Z when SHDN is low.
T_OUT
9, 14 RS-232 Receiver InputsR_IN
10, 13
TTL/CMOS Receiver Outputs. High Z when SHDN is low.
R_OUT
11, 12 TTL/CMOS Transmitter InputsT_IN
16 GroundGND
17 +3.0V to +5.5V Supply Voltage. Connect a 0.1µF capacitor to GND.V
CC
18
Active-Low Shutdown-Control Input. Drive low to shut down transmitters, receivers and
charge pumps.
SHDN
FUNCTIONNAME
______________________________________________________________ Pin Description
2 Positive terminal of the voltage-doubler charge-pump capacitor.C1+
PIN
2
1, 10, 11
3
4
5
6
7
8, 17
9, 16
12, 15
13, 14
18
19
20
SO SSOP