MAX3209E Datasheet, PDF (1/8 Pages) Maxim Integrated Products – ±15kV ESD-Protected, 12V, Dual RS-232 Serial Port with Low-Power Standby for Motherboards/Desktops

19-1471; Rev 1; 9/99
±15kV ESD-Protected, 12V, Dual RS-232 Serial Port
with Low-Power Standby for Motherboards/Desktops
General Description
The MAX3209E is a complete, dual DTE RS-232 serial
port (6 transmitters, 10 receivers) for motherboards and
desktop PCs that ensures compliance with the stringent
ESD requirements of the European Community. The
device minimizes board space and power consumption
by eliminating the need for a negative power supply; it
integrates two serial ports and a charge pump into a sin-
gle 38-pin TSSOP package.
The MAX3209E features a 50µA low-power standby
mode for compliance with system power-management
requirements. During standby, while the device oper-
ates from the single +3V to +5.5V logic supply, one
receiver on each port remains active, allowing automatic
system wake-up when peripheral communications
resume.
All transmitter outputs and receiver inputs are protected
to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV
using IEC 1000-4-2 Contact Discharge, and ±15kV
using the Human Body Model, making the device ideal
for use in harsh environments or mission-critical equip-
ment. As a result of its robust charge-pump structure,
the MAX3209E guarantees mouse driveability and true
RS-232 operation at data rates up to 460kbps, ensuring
compatibility with PC-to-PC communication software
(such as LapLink^™).
PART
MAX3209ECUU
MAX3209EEUU
Ordering Information
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
38 TSSOP
38 TSSOP
________________________Applications
Desktop PCs
Motherboards
Instruments
Equipment Requiring IEC 1000-4-2 Compliance
Telecommunications
Network Servers
Typical Operating Circuit appears at end of data sheet.
LapLink is a trademark of Traveling Software.
Features
o Two Complete Serial Ports in a Single 38-Pin
TSSOP Package
o Requires Only +12V Supply and Logic
Supply (+3V to +5.5V)
o No Negative Supply Required
o One Receiver Active per Port in Standby
for System Wake-Up
o 460kbps Data Rate; LapLink Compatible
o Enhanced ESD Protection
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge
o Low 50µA Standby Current
o Operates with Either +3V or +5V Logic
o Guaranteed Mouse Driveability
o Small 0.1µF Capacitors
o Flow-Through Pinout
Pin Configuration
TOP VIEW
R5OUT 1
R4OUT 2
R3OUT 3
R2OUT 4
R1OUT 5
T3IN 6
T2IN 7
T1IN 8
V_STBY 9
V_DD 10
C1+ 11
T4IN 12
T5IN 13
T6IN 14
R6OUT 15
R7OUT 16
R8OUT 17
R9OUT 18
R10OUT 19
MAX3209E
TSSOP
38 R5IN
37 R4IN
36 R3IN
35 R2IN
34 R1IN
33 T3OUT
32 T2OUT
31 T1OUT
30 V-
29 C1-
28 GND
27 T4OUT
26 T5OUT
25 T6OUT
24 R6IN
23 R7IN
22 R8IN
21 R9IN
20 R10IN
________________________________________________________________ Maxim Integrated Products 1
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