Datasheet

MAX3380E/MAX3381E
+2.35V to +5.5V, 1µA, 2Tx/2Rx RS-232 Transceivers
with ±15kV ESD-Protected I/O and Logic Pins
_______________________________________________________________________________________ 5
6
7
8
9
10
11
12
13
14
0 1000500 1500 2000 2500 3000
MAX3381E
SLEW RATE vs. LOAD CAPACITANCE
MAX3380E toc04
LOAD CAPACITANCE (pF)
SLEW RATE (V/μs)
V
CC
= +4.2V
V
CC
= +2.5V
0
10
20
30
40
50
60
70
80
0 1000500 1500 2000 2500 3000
SUPPLY CURRENT vs. LOAD CAPACITANCE
WHEN TRANSMITTING DATA
MAX3381E toc05
LOAD CAPACITANCE (pF)
SUPPLY CURRENT (mA)
460kbps
250kbps
20kbps
1 TRANSMITTER SWITCHING
-6
-2
-4
2
0
6
4
8
TRANSMITTER OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE (V
CC
FALLING)
MAX3380E toc06
SUPPLY VOLTAGE (V)
TRANSMITTER OUTPUT VOLTAGE (V)
2.5 3.5 4.5 5.5
V
OUT+
V
OUT-
-6
-2
-4
2
0
6
4
8
TRANSMITTER OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE (V
CC
RISING)
MAX3380E toc07
SUPPLY VOLTAGE (V)
TRANSMITTER OUTPUT VOLTAGE (V)
2.5 3.5 4.5 5.5
V
OUT+
V
OUT-
0
5
10
15
20
25
2.5 3.5 4.5 5.5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE (V
CC
FALLING)
MAX3380E toc08
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
1 TRANSMITTER SWITCHING
1μs/div
T_IN
5V/div
T_OUT
5V/div
MAX3380E toc09
MAX3380E
DATASTREAM V
CC
= +4.2V
5V
0
5V
0
-5V
V
CC
= V
L
= +2.5V
1μs/div
T_IN
5V/div
T_OUT
5V/div
MAX3380E toc10
MAX3380E
DATASTREAM V
CC
= +2.5V
5V
0
5V
0
-5V
Typical Operating Characteristics (continued)
(V
CC
= V
L
= +4.2V, C1 = 0.22µF, C2 = C3 = C4 = 1µF, C5 = 0.1µF parallel with 47µF, R
L
= 3kΩ, C
L
= 1000pF, data rate is 250kbps,
T
A
= +25°C, unless otherwise noted.)