MAX3209E
±15kV ESD-Protected, 12V, Dual RS-232 Serial Port
with Low-Power Standby for Motherboards/Desktops
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= +10.8V to +13.2V, V
STBY
= +3V to +5.5V, C1 = C2 = 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C, V
DD
= +12V, V
STBY
= +3.3V.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
.........................................................................-0.3V to +15V
V
STBY
....................................................................... -0.3V to +7V
V- ........................................................................... +0.3V to -15V
Input Voltages
T_IN ......................................................................-0.3V to +7V
R_IN .................................................................................±30V
Output Voltages
T_OUT..............................................................................±15V
R_OUT.................................................-0.3V to (V
STBY
+ 0.3V)
Short-Circuit Duration
T_OUT (one at a time) ............................................Continuous
R_OUT (one at a time)............................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
TSSOP (derate 11.8mW/°C above +70°C) ..................941mW
QFN 6
✕
6mm (derate 23.2mW/°C above +70°C)......1860mW
Operating Temperature Ranges
MAX3209EC_ _ ...................................................0°C to +70°C
MAX3209EE_ _ ................................................-40°C to +85°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
T
A
= +25°C
V
DD
= V
STBY
= 0, V
OUT
= ±2V
V
T_OUT
= 0
Transmitter input at GND
T_IN, V
STBY
= +3V to +5.25V
All transmitter outputs loaded with 3kΩ to GND
T_IN
V
DD
= +12V, no load, all transmitter inputs at
V
STBY
, all receiver inputs at V
STBY
or uncon-
nected
R_OUT
CONDITIONS
V2.4RS-232 Input Threshold High
V0.4RS-232 Input Threshold Low
V-25 25Receiver Input Voltage Range
Ω300Transmitter Output Resistance
mA±10 ±60
RS-232 Output Short-Circuit
Current
VOutput Voltage Swing ±5.0
V
V
STBY
- 0.3
V
OHR
Output Voltage High
10.8 13.2V
DD
µA25Input Pull-Up Current
V2.1V
IHT
Input Logic Threshold High
V0.4V
ILT
Input Logic Threshold Low
3 5.5STBY
0.5 1I
DD
mA
Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
V
STBY
= 3.3V V0.2 1RS-232 Input Hysteresis
T
A
= +25°C kΩ357RS-232 Input Resistance
T
A
= +25°C
Operating Voltage Range V
V
DD
= 0, V
STBY
= +3.3V, no load, all transmit-
ter inputs at V
STBY
, all receiver inputs at V
STBY
or unconnected
50 100I
STBY
µA
R_OUT; I
SINK
= 1.6mA V0.4V
OLR
Output Voltage Low
V
DD
= 0, V
STBY
= 5V µA0.05 ±5
Receiver Output Leakage
Current
V
STBY
- 0.6
I
SOURCE
= 40µA
I
SOURCE
= 1mA
RS-232 RECEIVER INPUTS
RS-232 TRANSMITTER OUTPUTS
TRANSMITTER LOGIC INPUTS
DC CHARACTERISTICS
RECEIVER LOGIC OUTPUTS
