Datasheet

MAX3209E
Chip Information
TRANSISTOR COUNT: 774
±15kV ESD-Protected, 12V, Dual RS-232 Serial Port
with Low-Power Standby for Motherboards/Desktops
8 _______________________________________________________________________________________
ON I/O, SIGNAL, DATA,
AND CONTROL PORTS
EFT
LEVEL
PEAK VOLTAGE REPITITION RATE (kHz)
INDUSTRIAL ELECTROMAGNETIC
ENVIRONMENT
1 250 5 Well protected
2 500 5 Protected
3 1000 5 Typical
4 2000 5 Severe
X 4000 5 MAX3209E
Table 1. Test Severity Levels for Communication Lines
SYSTEM POWER-
SUPPLY VOLTAGE
(V)
V
STBY
SUPPLY
VOLTAGE
(V)
COMPATIBILITY
3.3 3.3
Compatible with all
CMOS families.
5 5
Compatible with all
TTL and CMOS fami-
lies.
5 3.3
Compatible with ACT
and HCT CMOS, and
with AC, HC, or
CD4000 CMOS.
Table 2. Logic Family Compatibility with
Various Supply Voltages
Figure 6. MAX3209E in Standby Mode
POWER-MANAGEMENT UNIT
V
STBY
V
DD
GND
R5
R10
R_
T_
ALL OTHER
RECEIVERS
INACTIVE
ALL TRANSMITTERS
INACTIVE
+12V
SUPER
I/O
MAX3209E
IMPULSION
PULSE
BURST
15ms
U
U
BURST DURATION
BURST PERIOD 300ms
Figure 5. General Graph of a Fast Transient Burst