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SLLS708A – JANUARY 2006 – REVISED SEPTEMBER 2009
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD PROTECTION
Check for Samples:
1
FEATURES
ESD Protection for RS-232 Bus Pins
– ±15-kV Human-Body Model (HBM)
– ±8-kV IEC61000-4-2, Contact Discharge
– ±15-kV IEC61000-4-2, Air-Gap Discharge
Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
Operates With 3-V to 5.5-V V
CC
Supply
Operates up to 500 kbit/s
Two Drivers and Two Receivers
Low Standby Current . . . 1
μA
Typ
External Capacitors . . . 4 × 0.1
μF
Accepts 5-V Logic Input With 3.3-V Supply
Alternative High-Speed Pin-Compatible Device
(1 Mbit/s) for SNx5C3222E
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The device meets the requirements of TIA/EIA-232-F
and provides the electrical interface between an
asynchronous communication controller and the
serial-port connector. The charge pump and four
small external capacitors allow operation from a
single 3-V to 5.5-V supply. The device operates at
typical data signaling rates up to 500 kbit/s and a
maximum of 30-V/μs driver output slew rate.
DB, DW, OR PW PACKAGE
(TOP VIEW)
APPLICATIONS
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Battery-Powered Systems
PDAs
Notebooks
Laptops
Palmtop PCs
Hand-Held Equipment
EN
C1+
V+
C1−
C2+
C2−
V−
DOUT2
RIN2
ROUT2
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
PWRDOWN
V
CC
GND
DOUT1
RIN1
ROUT1
NC
DIN1
DIN2
NC
NC − No internal connection
DESCRIPTION/ORDERING INFORMATION
The MAX3222E consists of two line drivers, two line
receivers, and a dual charge-pump circuit with ±15-kV
ESD protection pin to pin (serial-port connection pins,
including GND).
The MAX3222E can be placed in the power-down mode by setting the power-down (PWRDOWN) input low,
which draws only 1
μA
from the power supply. When the device is powered down, the receivers remain active
while the drivers are placed in the high-impedance state. Also, during power down, the onboard charge pump is
disabled; V+ is lowered to V
CC
, and V– is raised toward GND. Receiver outputs also can be placed in the
high-impedance state by setting enable (EN) high.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2009, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
