TRS211
5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD PROTECTION
www.ti.com
SLLS811–JULY 2007
FEATURES
DB OR DW PACKAGE
(TOP VIEW)
•
RS-232 Bus-Pin ESD Protection Exceeds
±15 kV Using Human-Body Model (HBM)
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DOUT3
DOUT1
DOUT2
RIN2
ROUT2
DIN2
DOUT4
RIN3
ROUT3
SHDN
EN
RIN4
ROUT4
DIN4
DIN3
ROUT5
RIN5
V−
•
Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
2
3
•
•
•
•
Operates at 5-V VCC Supply
Four Drivers and Five Receivers
Operates up to 120 kbit/s
4
5
6
7
Low Supply Current in Shutdown
Mode . . . 1 μA Typical
DIN1
8
ROUT1
RIN1
9
•
•
External Capacitors . . . 4 × 0.1 μF
10
11
12
13
14
GND
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
V
CC
C1+
V+
C2−
APPLICATIONS
C1−
C2+
•
•
•
•
•
•
Battery-Powered Systems
PDAs
Notebooks
Laptops
Palmtop PCs
Hand-Held Equipment
DESCRIPTION/ORDERING INFORMATION
The TRS211 device consists of four line drivers, five line receivers, 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 5-V
supply. The devices operate at data signaling rates up to 120 kbit/s and a maximum of 30-V/μs driver output
slew rate.
The TRS211 has both shutdown (SHDN) and enable control (EN). In shutdown mode, the charge pumps are
turned off, V+ is pulled down to VCC, V– is pulled to GND, and the transmitter outputs are disabled. This reduces
supply current typically to 1 μA. EN is used to put the receiver outputs into the high-impedance state to allow
wired-OR connection of two RS-232 ports. It has no effect on the RS-232 drivers or the charge pumps.
ORDERING INFORMATION
TA
PACKAGE(1)(2)
ORDERABLE PART NUMBER
TRS211CDW
TOP-SIDE MARKING
TRS211C
Tube of 20
SOIC – DW
SSOP – DB
SOIC – DW
SSOP – DB
Reel of 1000
Tube of 50
TRS211CDWR
TRS211CDB
0°C to 70°C
TRS211C
TRS211I
TRS211I
Reel of 2000
Tube of 20
TRS211CDBR
TRS211IDW
Reel of 1000
Tube of 50
TRS211IDWR
–40°C to 85°C
TRS211IDB
Reel of 2000
TRS211IDBR
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
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 © 2007, 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.