MAX3209E Maxim, MAX3209E Datasheet - Page 4

• Manufacturer Part Number: MAX3209E
• Description: 15kV ESD-Protected / 12V / Dual RS-232 Serial Port with Low-Power Standby for Motherboards/Desktops
• Manufacturer: Maxim

±15kV ESD-Protected, 12V, Dual RS-232 Serial Port
with Low-Power Standby for Motherboards/Desktops
4
(V
1–5, 15–19
6, 7, 8, 12,
25, 26, 27,
31, 32, 33
STBY
20–24,
13, 14
34–38
PIN
_______________________________________________________________________________________
10
11
28
29
30
9
= +5V, V
0.6
0.5
0.4
0.3
0.2
0.1
0
R_OUT
0
T_OUT
NAME
V
R_IN
GND
T_IN
C1+
V
C1-
STBY
DD
V-
RECEIVER OUTPUT LOW VOLTAGE
DD
1
= +12V, C1 = C2 = 0.1µF, T
2
vs. SINK CURRENT
TTL/CMOS Receiver Outputs
TTL/CMOS Transmitter Inputs
Standby Power Supply for R5 and R10
+12V Single-Supply Voltage
Positive Terminal of the Inverting
Charge-Pump Capacitor
RS-232 Receiver Inputs
RS-232 Transmitter Outputs
Ground
Negative Terminal of the Inverting
Charge-Pump Capacitor
-12V generated by the inverting
charge pump
3
I
SINK
4
(mA)
5
Pin Description
6
FUNCTION
7
8
9
A
Typical Operating Characteristics (continued)
= +25°C, unless otherwise noted.)
Figure 1. Slew-Rate Test Circuit and Timing Diagram
DRIVER
V
INPUT
GENERATOR
OUT
0
SIGNAL
3.0V
t
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
PHL
1.5V
0
0
t
t
F2
F1
RECEIVER OUTPUT HIGH VOLTAGE
5
vs. SOURCE CURRENT
10
I
-3.0V
-3.3V
3.3V
3.0V
SOURCE
15
(mA)
20
t
PLH
R
t
t
L
R2
R1
25
30
C
L
V
V
0V
OH
OL