Plus RS-232 User Manual download pdf

READY

C1+

V+

C1−

C2+

C2−

V−

DOUT2

RIN2

ROUT2

FORCEOFF

GND

DOUT1

RIN1

ROUT1

FORCEON

DIN1

DIN2

INVALID

DB OR PW PACKAGE

(TOP VIEW)

TRS3318

www.ti.com

SLLS820A –AUGUST 2007–REVISED OCTOBER 2013

2.5-V 460-kbps RS-232 TRANSCEIVER

WITH ±15-kV ESD PROTECTION

Check for Samples: TRS3318

FEATURES

DESCRIPTION

The TRS3318 is a dual-driver, dual-receiver, RS-232

• ESD Protection for RS-232 I/O Pins

compatible transceiver. The device features auto-

– ±15 kV Human-Body Model (HBM)

powerdown plus and enhanced electrostatic

– ±8 kV IEC 61000-4-2, Contact Discharge

discharge (ESD) protection integrated into the chip.

Driver output and receiver input are protected to ±8

– ±8 kV IEC 61000-4-2, Air-Gap Discharge

kV using the IEC 61000-4-2 Air-Gap Discharge

• 300-μA Operating Supply Current

method, ±8 kV using the IEC 61000-4-2 Contact

• 1-μA Low-Power Standby (With Receivers

Discharge method, and ±15 kV using the Human-

Active) Mode

Body Model (HBM).

• Designed to Transmit at a Data Rate of

The device operates at a data rate of 460 kbps. The

460 kbps

transceiver has a proprietary low-dropout driver

output stage enabling RS-232-compatible operation

• Auto-Powerdown Plus Option Features

from a 2.25-V to 3-V supply with a dual charge pump.

Flexible Power-Saving Mode

The charge pump requires only four 0.1-μF

• Operates From a Single 2.25-V to 3-V V

capacitors and features a logic-level output (READY)

Supply

that asserts when the charge pump is regulating and

the device is ready to begin transmitting.

APPLICATIONS

The TRS3318 achieves a 1-μA supply current using

• Battery-Powered Systems

the auto-powerdown feature. This device

• PDAs

automatically enters a low-power power-down mode

when the RS-232 cable is disconnected or the drivers

• Cellular Phones

of the connected peripherals are inactive for more

• Notebooks

than 30 s. The device turns on again when it senses

• Hand-Held Equipment

a valid transition at any driver or receiver input. Auto-

powerdown saves power without changes to the

• Pagers

existing BIOS or operating system.

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.

1 2 ... 16

Summary of Contents

Page 1 - WITH ±15-kV ESD PROTECTION

1234567891020191817161514131211READYC1+V+C1−C2+C2−V−DOUT2RIN2ROUT2FORCEOFFVCCGNDDOUT1RIN1ROUT1FORCEONDIN1DIN2INVALIDDB OR PW PACKAGE(TOP VIEW)TRS3318w

Page 2 - DESCRIPTION (CONTINUED)

TRS3318SLLS820A –AUGUST 2007–REVISED OCTOBER 2013www.ti.comREVISION HISTORYChanges from Original (August 2007) to Revision A Page• Updated document to

Page 3 - TERMINAL FUNCTIONS

PACKAGE OPTION ADDENDUMwww.ti.com11-Aug-2014Addendum-Page 1PACKAGING INFORMATIONOrderable Device Status(1)Package Type PackageDrawingPins PackageQtyEc

Page 4 - Electrical Characteristics

PACKAGE OPTION ADDENDUMwww.ti.com11-Aug-2014Addendum-Page 2(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry

Page 5 - Switching Characteristics

Page 6

Page 7 - Figure 2. Driver Pulse Skew

MECHANICAL DATAMSSO002E – JANUARY 1995 – REVISED DECEMBER 2001POST OFFICE BOX 655303 • DALLAS, TEXAS 75265DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE4040

Page 8

IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and otherch

Page 9 - APPLICATION INFORMATION

TRS3318SLLS820A –AUGUST 2007–REVISED OCTOBER 2013www.ti.comThis integrated circuit can be damaged by ESD. Texas Instruments recommends that all integr

Page 10 - REVISION HISTORY

DIN2DIN1DOUT2DOUT1Auto-Powerdown PlusINVALIDRIN1RIN2FORCEOFFFORCEONROUT1ROUT2131220141510178111695 k5 kΩΩREADY1TRS3318www.ti.comSLLS820A –AUGUST 2007–

Page 11 - PACKAGE OPTION ADDENDUM

TRS3318SLLS820A –AUGUST 2007–REVISED OCTOBER 2013www.ti.comAbsolute Maximum Ratings(1)over operating free-air temperature range (unless otherwise note

Page 12

TRS3318www.ti.comSLLS820A –AUGUST 2007–REVISED OCTOBER 2013DRIVER SECTIONElectrical Characteristicsover recommended ranges of supply voltage and opera

Page 13

TRS3318SLLS820A –AUGUST 2007–REVISED OCTOBER 2013www.ti.comRECEIVER SECTIONElectrical Characteristicsover recommended ranges of supply voltage and ope

Page 14

TEST CIRCUIT VOLTAGE WAVEFORMS50 Ω−3 V3 VOutputInputVOLVOHtPHLGenerator(see Note B)tPLHOutputCL (see Note A)NOTES: A. CL includes probe and jig capaci

Page 15 - MECHANICAL DATA

tWUVCC00V+V−VCC0DriverInputsReceiverInputs}INVALIDOutputDriverOutputsVCCInvalidRegionReadyOutputtINVHtWUtINVLVOLTAGE WAVEFORMSTEST CIRCUIT50 ΩGenerato

Page 16 - IMPORTANT NOTICE

1411015209GND18136542RIN116DOUT28V−7V+3 192.5 V5k5kRS-232-CompatibleOutputsRS-232-CompatibleInputsTo Power-Management UnitAuto-PowerdownPlusC1+C1−C2+C