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C2+

C2−

V−

RIN1

RIN2

RIN3

RIN4

RIN5

DOUT1

DOUT2

DOUT3

DIN3

DIN2

DIN1

C1+

V+

GND

C1−

FORCEON

FORCEOFF

INVALID

ROUT2B

ROUT1

ROUT2

ROUT3

ROUT4

ROUT5

DB, DW, OR PW PACKAGE

(TOP VIEW)

DESCRIPTION/ORDERING INFORMATION

TRSF3243

3-V TO 5.5-V MULTICHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER

SLLS862 – AUGUST 2007

• Operates With 3-V to 5.5-V V

• 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

• Battery-Powered Systems

• PDAs

• Notebooks

• Laptops

• Palmtop PCs

• Hand-Held Equipment

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

ORDERABLE PART NUMBER

TOP-SIDE MARKING

Tube of 20

TRSF3243CDW

SOIC – DW

TRSF3243C

Reel of 1000

TRSF3243CDWR

0

°C to 70°C

SSOP – DB

Reel of 2000

TRSF3243CDBR

TRSF3243C

Tube of 50

TRSF3243CPW

TSSOP – PW

RT43C

Reel of 2000

TRSF3243CPWR

Tube of 20

TRSF3243IDW

SOIC – DW

TRSF3243I

Reel of 1000

TRSF3243IDWR

–40

°C to 85°C

SSOP – DB

Reel of 2000

TRSF3243IDBR

TRSF3243I

Tube of 50

TRSF3243IPW

TSSOP – PW

Reel of 2000

TRSF3243IPWR

RT43I

(1)

Package drawings, thermal data, symbolization are available at www.ti.com/sc/packaging.

(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.