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3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER
WITH
±15-kV
ESD PROTECTION
SLLS814 – JULY 2007
FEATURES
•
•
•
•
•
•
•
•
•
RS-232 Bus-Pin ESD Protection Exceeds
±15
kV Using Human-Body Model (HBM)
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 250 kbit/s
One Driver and One Receiver
Low Standby Current . . . 1
μA
Typical
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)
– TRSF3221
Auto-Powerdown Feature Automatically
Disables Drivers for Power Savings
APPLICATIONS
•
•
•
•
•
Battery-Powered, Hand-Held, and Portable
Equipment
PDAs and Palmtop PCs
Notebooks, Subnotebooks, and Laptops
Digital Cameras
Mobile Phones and Wireless Devices
DB OR PW PACKAGE
(TOP VIEW)
EN
C1+
V+
C1-
C2+
C2-
V-
RIN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
•
FORCEOFF
V
CC
GND
DOUT
FORCEON
DIN
INVALID
ROUT
DESCRIPTION/ORDERING INFORMATION
The TRS3221 consists of one line driver, one line receiver, and a dual charge-pump circuit with
±15-kV
ESD
protection pin to pin (serial-port connection pins, including GND). 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. These devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/μs driver
output slew rate.
ORDERING INFORMATION
T
A
SSOP – DB
0°C to 70°C
TSSOP – PW
SSOP – DB
–40°C to 85°C
TSSOP – PW
(1)
(2)
PACKAGE
(1) (2)
Tube of 50
Reel of 2000
Tube of 50
Reel of 2000
Tube of 50
Reel of 2000
Tube of 50
Reel of 2000
ORDERABLE PART NUMBER
TRS3221CDB
TRS3221CDBR
TRS3221CPW
TRS3221CPWR
TRS3221IDB
TRS3221IDBR
TRS3221IPW
TRS3221IPWR
TOP-SIDE MARKING
RS21C
RS21C
RS21I
RS21I
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
Web site at
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 © 2007, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
