SN65C3222E Datasheet, PDF (1/15 Pages) Texas Instruments – 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVERS/RECEIVERS WITH ±15-kV ESD PROTECTION

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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
FEATURES
• 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 µA Typ
• External Capacitors . . . 4 × 0.1 µF
• Accepts 5-V Logic Input With 3.3-V Supply
DB, DW, OR PW PACKAGE
(TOP VIEW)
EN 1
C1+ 2
V+ 3
C1− 4
C2+ 5
C2− 6
V− 7
DOUT2 ⁸
RIN2 ⁹
ROUT2 ¹⁰
20 PWRDOWN
19 V_CC
18 GND
17 DOUT1
16 RIN1
15 ROUT1
14 NC
13 _DIN1
12 _DIN2
11 _NC
NC − No internal connection
APPLICATIONS
• Battery-Powered Systems
• PDAs
• Notebooks
• Laptops
• Palmtop PCs
• Hand-Held Equipment
DESCRIPTION/
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.
RHL PACKAGE
(TOP VIEW)
1
C1+ 2
NC 3
V+ 4
C1– 5
C2+ 6
C2– 7
V– 8
DOUT2 9
NC 10
RIN2 11
12
24
23
22
21
20
19
18
17
16
15
14
13
V_CC
NC
GND
DOUT1
RIN1
ROUT1
NC
DIN1
NC
DIN2
NC − No internal connection
The SN65C3222E and SN75C3222E 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 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.
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, Texas Instruments Incorporated