Datasheet

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DESCRIPTION/
DB, DW, OR PW PACKAGE
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EN
C1+
V+
C1−
C2+
C2−
V−
DOUT2
RIN2
ROUT2
PWRDOWN
V
CC
GND
DOUT1
RIN1
ROUT1
NC
DIN1
DIN2
NC
NC − No internal connection
RHL PACKAGE
(TOP VIEW)
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GND
DOUT1
RIN1
ROUT1
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DIN1
NC
DIN2
C1+
NC
V+
C1–
C2+
C2–
V–
DOUT2
NC
RIN2
NC
PWRDOWN
ROUT2
EN
NC − No internal connection
The SN65C3222E and SN75C3222E can be placed in the power-down mode by setting the power-down
SN65C3222E , , SN75C3222E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVERS/RECEIVERS
WITH ± 15-kV ESD PROTECTION
SLLS725A JUNE 2006 REVISED JULY 2006
ESD Protection for RS-232 Bus Pins
± 15-kV Human-Body Model (HBM)
± 8-kV IEC 61000-4-2, Contact Discharge
± 15-kV IEC 61000-4-2, Air-Gap Discharge
Meet or Exceed the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
Operate With 3-V to 5.5-V V
CC
Supply
Operate up to 1000 kbit/s
Two Drivers and Two Receivers
Low Standby Current . . . 1 µ A Typ
External Capacitors . . . 4 × 0.1 µ F
Accepts 5-V Logic Input With 3.3-V Supply
Battery-Powered Systems
PDAs
Notebooks
Laptops
Palmtop PCs
Hand-Held Equipment
ORDERING INFORMATION
The SN65C3222E and SN75C3222E consist 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 devices meet the requirements of TIA/EIA-232-F
and provide 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 devices operate at
typical data signaling rates up to 1000 kbit/s and are
improved drop-in replacements for industry-popular
'3222 two-driver, two-receiver functions.
( PWRDOWN) input low, which draws only 1 µ A from the power supply. When the devices are 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.
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.
Copyright © 2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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