Datasheet

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ISODE

GALVANIC ISOLATIO

D 1

OSC

D 2

GND2

DWPACKAGE

GND2

ISODE

CC1

GND1

CC2

GND2

ISO1176T

www.ti.com

SLLSE28F –OCTOBER 2010–REVISED OCTOBER 2012

Isolated Profibus RS-485 Transceiver with Integrated Transformer Driver

Check for Samples: ISO1176T

FEATURES

APPLICATIONS

• 3000V

RMS

/ 4242V

Isolation

• Profibus

• Meets or Exceeds the Requirements of EN • Factory Automation

50170 and TIA/EIA RS-485

• Networked Sensors

• Signaling Rates up to 40 Mbps

• Motor/motion Control

• Easy Isolated Power Design with Integrated

• HVAC and Building Automation Networks

Transformer Driver

• Networked Security Stations

• Typical Efficiency > 60% (I

LOAD

= 100 mA) - see

sluu471

• Differential Output exceeds 2.1V (54Ω Load)

• Low Bus Capacitance 10pF (MAX)

• 50kV/µs Typical Transient Immunity

• UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2)

Approvals Pending

• Fail-safe Receiver for Bus Open, Short, or Idle

DESCRIPTION

The ISO1176T is an isolated differential line transceiver with integrated oscillator outputs that provide the primary

voltage for an isolation transformer. The device is ideal for long transmission lines because the ground loop is

broken to allow the device to operate with a much larger common-mode voltage range. The symmetrical isolation

barrier of each device is tested to provide 4242V

of isolation per VDE for 60 seconds between the line

transceiver and the logic-level interface.

The galvanically isolated differential bus transceiver is an integrated circuit designed for bi-directional data

communication on multipoint bus-transmission lines. The transceiver combines a galvanically isolated differential

line driver and differential input line receiver. The driver has an active-high enable with isolated enable-state

output on the ISODE pin (pin 10) to facilitate direction control. The driver differential outputs and the receiver

differential inputs connect internally to form a differential input/output (I/O) bus port that is designed to offer

minimum loading to the bus whenever the driver is disabled or V

CC2

= 0.

Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can

cause damage to the transceiver and/or near-by sensitive circuitry if they are of sufficient magnitude and

duration. The ISO1176T can significantly reduce the risk of data corruption and damage to expensive control

circuits.

The device is characterized for operation over the ambient temperature range of –40°C to 85°C.

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.

2Profibus is a registered trademark of Profibus International.

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.

Summary of content (27 pages)

PAGE 1
ISO1176T www.ti.com SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 Isolated Profibus RS-485 Transceiver with Integrated Transformer Driver Check for Samples: ISO1176T FEATURES APPLICATIONS • • • • • • • • 1 2 • • • • • • • • 3000VRMS / 4242VPK Isolation Meets or Exceeds the Requirements of EN 50170 and TIA/EIA RS-485 Signaling Rates up to 40 Mbps Easy Isolated Power Design with Integrated Transformer Driver Typical Efficiency > 60% (ILOAD = 100 mA) - see sluu471 Differential Output exceeds 2.
PAGE 2
ISO1176T SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
PAGE 3
ISO1176T www.ti.com SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 ABSOLUTE MAXIMUM RATINGS (1) VCC1, VCC2 Input supply voltage (2) Voltage at any bus I/O terminal VO Voltage at D1, D2 VI Voltage input at D, DE or RE terminal IO Receiver output current ID1, ID2 Transformer Driver Output Current ESD Human Body Model JEDEC Standard 22, Test Method A114-C.01 Charged Device Model JEDEC Standard 22, Test Method C101 Machine Model ANSI/ESDS5.
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ISO1176T SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 www.ti.com SUPPLY CURRENT over operating free-air temperature range (unless otherwise noted) PARAMETER Logic-side quiescent supply current ICC1 (1) ICC2 (1) (1) Bus-side quiescent supply current TEST CONDITIONS MIN VCC1 = 3.3 V ± 10%, DE, RE = 0V or VCC1, No load TYP MAX 4.5 8 mA 7 11 mA 13.
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ISO1176T www.ti.com SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 RS-485 DRIVER SWITCHING CHARACTERISTICS over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX 23 35 2 5 25 40 2 5 UNIT tPLH, tPHL Prop delay time tsk(p) Pulse skew (|tPHL – tPLH|) tPLH, tPHL Prop delay time tsk(p) Pulse skew (|tPHL – tPLH|) tr Differential output signal rise time 2 3 7.5 tf Differential output signal fall time 2 3 7.
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ISO1176T SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 www.ti.
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ISO1176T www.ti.com SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 PARAMETER MEASUREMENT INFORMATION VCC1 VCC1 IOA DE IOA DE A A II 0 or VCC1 B GND1 II 0 or VCC1 VOD D IOB GND2 B GND2 GND1 VI IOB VI VOA VOB GND1 VOA VOB GND2 GND 1 GND2 Figure 2. Open Circuit Voltage Test Circuit Figure 3. VOD Test Circuit VCC2 VCC1 IOA RL 2 DE DE 375 W A D 0 or 3 V 54 W VOD D .
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ISO1176T SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) VCC1 IOA DE A 0 or VCC1 II VI V OD B D IOB GND 2 GND 1 V OA V OB GND 1 54 W GND 2 Figure 8. Input Voltage Hysteresis Test Circuit DE 250 Output Current - mA IOS A D IOS B + V_ OS GND1 GND2 135 60 t(CFB) time t(TSD) Figure 9.
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ISO1176T www.ti.com SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 PARAMETER MEASUREMENT INFORMATION (continued) RL= 110 W 0V A VIN = 3. 0V CL = 50 pF t(AHZ) t(AZH) B R = 110 W DE Signal Generator 1.5 V DE D VOA VOB 50 W GND 1 VOH -0.5 V A VCC2 50 % t(BZL) C L = 50 pF t(BLZ) B VOL 0.5 V 50 % GND 2 Figure 13.
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ISO1176T SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) VCC D VCC DE A 3V RE 54 W 1.5 V 1.5 V B 0V 1 kW R tpHZ tpZH 0V VOH -0.5 V C L = 15 pF Signal Generator 1.5 V (includes probe and jig capacitance) RE VO R GND 50 W PRR=100 kHz, 50% duty cycle, tr<6ns, t f <6ns, ZO = 50 W Figure 17. Receiver Enable Test Circuit and Waveforms, Data Output High 0V D VCC DE A 3V RE 54 W B 1.5 V 0V R tpLZ tpZL 1 kW VCC1 VOH R 1.
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ISO1176T www.ti.com SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 PARAMETER MEASUREMENT INFORMATION (continued) C = 0.1 mF VCC1 ±1% DE 2.0V GND 1 VCC2 C = 0.1 mF ±1% A D S1 54 W B VOH or VOL 0.8V R VOH or VOL Success / fail criterion : stabile VOH or V OL outputs. RE 1 kW GND1 GND2 CL=15 pF (includes probe and jig capacitance) VTEST Figure 20. Common-Mode Transient Immunity Test Circuit tf_D tr_D 90% D1 10% tBBM tBBM 90 % D2 10 % tf_D tr_D Figure 21.
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ISO1176T SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 www.ti.com Table 1. DRIVER FUNCTION TABLE (1) (1) VCC1 VCC2 INPUT (D) ENABLE INPUT (DE) ENABLE OUTPUT (ISODE) OUTPUTS PU PU H H H H L PU PU L H H L H PU PU X L L Z Z PU PU X open L Z Z PU PU open H H H L PD PU X X L Z Z PU PD X X L Z Z PD PD X X L Z Z A B PU = Powered Up, PD = Powered Down, H = High Level, L= Low Level, X = Don't Care, Z = High Impedance (off) Table 2.
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ISO1176T www.ti.com SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 IEC INSULATION AND SAFETY RELATED SPECIFICATIONS FOR 16-DW PACKAGE over recommended operating conditions (unless otherwise noted) PARAMETER L(I01) Minimum air gap (Clearance) TEST CONDITIONS (1) (1) MIN MAX UNIT Shortest terminal to terminal distance through air 8.3 mm Shortest terminal to terminal distance across the package surface 8.
PAGE 14
ISO1176T SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 www.ti.com REGULATORY INFORMATION VDE UL Certified according to DIN EN 60747-5-2 (VDE 0884 Part 2) Recognized under 1577 Component Recognition Program Basic Insulation Maximum Transient Overvoltage, 4242 VPK Maximum Surge Voltage, 4242 VPK Maximum Working Voltage, 566 VPK Single / Basic Isolation Voltage, 2500 VRMS (1) File Number: Pending File Number: Pending (1) Production tested ≥ 3000 Vrms for 1 second in accordance with UL 1577.
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ISO1176T www.ti.com SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 400 VCC1 = VCC2 = 5.5 V Safety Limiting Current - mA 350 300 250 200 150 100 50 0 0 50 100 150 TC - Case Temperature - °C 200 Figure 22.
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ISO1176T SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 www.ti.com EQUIVALENT CIRCUIT SCHEMATICS DE Input D , RE Input V CC1 V CC1 V CC1 V CC1 V CC1 1 MW 500 W 500 W 1 MW ISODE Output 3 .3 -V R Output V CC2 V CC1 5.5 W 4W 11 W 6.4 W 5 -V R Output V CC1 5.
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ISO1176T www.ti.
PAGE 18
ISO1176T SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 www.ti.com TYPICAL CHARACTERISTICS 90 35 No Load TA = 25°C 30 ICC2 @ 5 V 80 RL = 54 W, CL = 50 pF, TA = 25°C ICC - Supply Current - mA ICC - Supply Current - mA 70 25 ICC2 @ 5 V 20 15 ICC1 @ 5 V ICC1 @ 3.3 V 10 5 40 30 20 0 0 5 10 15 20 25 Data Rate - Mbps 30 35 40 Figure 23. RMS SUPPLY CURRENT (ICC1 and ICC2) vs SIGNALING RATE WITH NO LOAD ICC1 @ 3.
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ISO1176T www.ti.com SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 TYPICAL CHARACTERISTICS (continued) 0.7 110 15 pF Load TA = 25°C 100 VCC = 4.75 V 0.6 Driver Enable Skew − ns IO - Output Current - mA 90 80 70 60 50 40 30 20 0.5 VCC = 5.25 V 0.4 VCC = 5 V 0.3 0.2 0.1 10 0 0 1 2 3 VO - Output Voltage - V 4 0 −40 5 Figure 27. RECEIVER LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 85 58 tPHL (VCC1 = 3.
PAGE 20
ISO1176T SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 www.ti.com APPLICATION INFORMATION REFERENCE DESIGN ISO1176T Reference Design (SLUU471) is available to provide complete isolated data and power solution. TRANSIENT VOLTAGES Isolation of a circuit insulates it from other circuits and earth so that noise develops across the insulation rather than circuit components.
PAGE 21
ISO1176T www.ti.com SLLSE28F – OCTOBER 2010 – REVISED OCTOBER 2012 REVISION HISTORY Changes from Revision initial (October 2010) to Revision A Page • Updated transformer driver characteristics ........................................................................................................................... 6 • Added Thermal Table data .................................................................................................................................................
PAGE 22
PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Mar-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device ISO1176TDWR Package Package Pins Type Drawing SOIC DW 16 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 16.4 Pack Materials-Page 1 10.75 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.7 2.7 12.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Mar-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) ISO1176TDWR SOIC DW 16 2000 367.0 367.0 38.
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