TRSF3243
3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
www.ti.com
SLLS862 – AUGUST 2007
FEATURES
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DB, DW, OR PW PACKAGE
(TOP VIEW)
Operates With 3-V to 5.5-V VCC Supply
Always-Active Noninverting Receiver Output
(ROUT2B)
Low Standby Current . . . 1 μA Typ
External Capacitors . . . 4 × 0.1 μF
Accepts 5-V Logic Input With 3.3-V Supply
Inter-Operable With SN65C3238, SN75C3238
Supports Operation From 250 kbit/s to
1 Mbit/s
RS-232 Bus-Pin ESD Protection Exceeds
±15 kV Using Human-Body Model (HBM)
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
C2+
C2−
V−
RIN1
RIN2
RIN3
RIN4
RIN5
DOUT1
DOUT2
DOUT3
DIN3
DIN2
DIN1
APPLICATIONS
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1
28
2
27
3
26
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25
5
24
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23
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22
8
21
9
20
10
19
11
18
12
17
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16
14
15
C1+
V+
VCC
GND
C1−
FORCEON
FORCEOFF
INVALID
ROUT2B
ROUT1
ROUT2
ROUT3
ROUT4
ROUT5
Battery-Powered Systems
PDAs
Notebooks
Laptops
Palmtop PCs
Hand-Held Equipment
DESCRIPTION/ORDERING INFORMATION
The TRSF3243 consists of three 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). This device 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. In addition, this device
includes an always-active noninverting output (ROUT2B), which allows applications using the ring indicator to
transmit data while the device is powered down. The device operates at data signaling rates up to 1 Mbit/s and
an increased slew-rate range of 24 V/μs to 150 V/μs.
ORDERING INFORMATION
PACKAGE (1) (2)
TA
SOIC – DW
0°C to 70°C
SSOP – DB
TSSOP – PW
SOIC – DW
–40°C to 85°C
SSOP – DB
TSSOP – PW
(1)
(2)
ORDERABLE PART NUMBER
Tube of 20
TRSF3243CDW
Reel of 1000
TRSF3243CDWR
Reel of 2000
TRSF3243CDBR
Tube of 50
TRSF3243CPW
Reel of 2000
TRSF3243CPWR
Tube of 20
TRSF3243IDW
Reel of 1000
TRSF3243IDWR
Reel of 2000
TRSF3243IDBR
Tube of 50
TRSF3243IPW
Reel of 2000
TRSF3243IPWR
TOP-SIDE MARKING
TRSF3243C
TRSF3243C
RT43C
TRSF3243I
TRSF3243I
RT43I
Package drawings, thermal data, symbolization are available at www.ti.com/sc/packaging.
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.
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
