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MAX3209E Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. MAX3209E
Description  ±15kV ESD-Protected, 12V, Dual RS-232 Serial Port with Low-Power Standby for Motherboards/Desktops
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX3209E Datasheet(HTML) 4 Page - Maxim Integrated Products

   
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±15kV ESD-Protected, 12V, Dual RS-232 Serial Port
with Low-Power Standby for Motherboards/Desktops
4
_______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
6, 7, 8, 12,
13, 14
T_IN
TTL/CMOS Transmitter Inputs
9
VSTBY
Standby Power Supply for R5 and R10
11
C1+
Positive Terminal of the Inverting
Charge-Pump Capacitor
1–5, 15–19
R_OUT
TTL/CMOS Receiver Outputs
10
VDD
+12V Single-Supply Voltage
20–24,
34–38
R_IN
RS-232 Receiver Inputs
25, 26, 27,
31, 32, 33
T_OUT
RS-232 Transmitter Outputs
28
GND
Ground
tF2
tF1
tPHL
tPLH
tR1
tR2
1.5V
3.0V
0
0V
DRIVER
INPUT
VOUT
VOH
VOL
3.3V
3.0V
-3.0V
-3.3V
RL
CL
SIGNAL
GENERATOR
Figure 1. Slew-Rate Test Circuit and Timing Diagram
29
C1-
Negative Terminal of the Inverting
Charge-Pump Capacitor
30
V-
-12V generated by the inverting
charge pump
Typical Operating Characteristics (continued)
(VSTBY = +5V, VDD = +12V, C1 = C2 = 0.1µF, TA = +25°C, unless otherwise noted.)
0
0.1
0.2
0.3
0.4
0.5
0.6
02
1
3456789
RECEIVER OUTPUT LOW VOLTAGE
vs. SINK CURRENT
ISINK (mA)
0
1.5
1.0
0.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
010
5
15202530
RECEIVER OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
ISOURCE (mA)


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