Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsISO1176DW

8 9

GND1

CC2

GND2

DW PACKAGE

(TOP VIEW)

CC1

GND1

GND2

ISODEPV

ISO1176

functiondiagram

ISODE

GALVANICISOLATION

ISO1176

www.ti.com

SLLS897D –MARCH 2008–REVISED MARCH 2010

ISOLATED RS-485 PROFIBUS TRANSCEIVER

Check for Samples: ISO1176

FEATURES

• Low Bus Capacitance – 10 pF (MAX)

• 4000-V

PEAK

Isolation, 560-V

peak

IORM

• 50 kV/ms Typical Transient Immunity

– UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2), • Failsafe Receiver for Bus Open, Short, Idle

IEC 61010-1, IEC 60950-1 and CSA

• 3.3-V Inputs are 5-V Tolerant

Approved

APPLICATIONS

• Bus-Pin ESD Protection

• Profibus

– 16 kV HBM Between Bus Pins and GND2

• Factory Automation

– 6 kV HBM Between Bus Pins and GND1

• Networked Sensors

• Meets or Exceeds the Requirements of

• Motor/Motion Control

EN 50170 and TIA/EIA-485

• HVA and Building Automation Networks

• Signaling Rates up to 40 Mbps

• Networked Security Stations

• Differential Output Exceeds 2.1 V (54 Ω Load)

DESCRIPTION

The ISO1176 is an isolated differential line transceiver designed for use in PROFIBUS applications. The device

is ideal for long transmission lines since the ground loop is broken to provide for operation with a much larger

common mode voltage range. The symmetrical isolation barrier of each device is tested to provide 2500 Vrms of

isolation 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 allowing up to 160 nodes.

The PV pin (pin 7) is provided as a full-chip enable option. All device outputs become high impedance when a

logic low is applied to the PV pin. For more information, see the function tables in the device information section.

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 ISO1176 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.

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 (29 pages)

PAGE 1
ISO1176 www.ti.com SLLS897D – MARCH 2008 – REVISED MARCH 2010 ISOLATED RS-485 PROFIBUS TRANSCEIVER Check for Samples: ISO1176 FEATURES • • • • 1 • • • • • 4000-VPEAK Isolation, 560-Vpeak VIORM – UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2), IEC 61010-1, IEC 60950-1 and CSA Approved Bus-Pin ESD Protection – 16 kV HBM Between Bus Pins and GND2 – 6 kV HBM Between Bus Pins and GND1 Meets or Exceeds the Requirements of EN 50170 and TIA/EIA-485 Signaling Rates up to 40 Mbps Differential Output Exceeds 2.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 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. ABSOLUTE MAXIMUM RATINGS over operating junction temperature range unless otherwise noted (1) VALUE UNIT –0.5 to 7 V Voltage at any bus I/O terminal –9 to 14 V Voltage input at any D, DE or RE terminal –0.
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ISO1176 www.ti.com SLLS897D – MARCH 2008 – REVISED MARCH 2010 SUPPLY CURRENT (continued) over recommended operating conditions (unless otherwise noted) PARAMETER ICC2 Bus side RMS supply current TEST CONDITIONS 5.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 www.ti.
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ISO1176 www.ti.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) VCC2 DE 375 W A D 0 or 3 V + VOD - B 60 W -7 V to 12 V 375 W GND 2 Figure 3. Driver VOD with Common-mode Loading Test Circuit VCC1 RL 2 IOA DE A II 0 or VCC1 D VOD B GND 1 RL 2 IOB GND 2 VI VOB VOA VOC GND 2 GND 1 Figure 4.
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ISO1176 www.ti.com SLLS897D – MARCH 2008 – REVISED MARCH 2010 PARAMETER MEASUREMENT INFORMATION (continued) VDO(RING) VDO(SS) VOD(pp) 0 V Differential Figure 6. VOD(RING) Waveform and Definitions VCC1 IOA DE A II 0 or VCC1 D GND 1 VI VOD B GND 2 IOB VOA VOB GND 1 54 W GND 2 Figure 7. Input Voltage Hysteresis Test Circuit DE 250 I OS 0.5 W D B I OS Vos GND 1 GND 2 GND 2 Output Current - mA A 120 60 t(CFB) time t(TSD) Figure 8.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) DE I OS B I OS 250 Output Current - mA A D Vos GND 1 GND 2 GND 2 120 60 t(CFB) time t(TSD) Figure 9. IOS(SS) Steady State Short Circuit Output Current Test Circuit 3V DE VCC1 A VOD D Input Generator RL = 54 W ±1% B VI CL = 50 pF ± 20% 1.5 V VI 1.
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ISO1176 www.ti.com SLLS897D – MARCH 2008 – REVISED MARCH 2010 PARAMETER MEASUREMENT INFORMATION (continued) RL = 110 W 0V A CL = 50 pF 1.5 V DE D VIN = 3 V t(AZH) B RL = 110 W DE Signal Generator t(AHZ) A 50 W t(BZL) VOA VOB GND 1 Generator PRR = 500 kHz, 50% Duty Cycle, tr <6 ns, tf <6 ns, ZO = 50 W VOH -0.5 V 50% VCC2 t(BLZ) B CL = 50 pF 50% VOL +0.5 V GND 2 Figure 13.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) VCC D VCC DE A 3V RE 54 W B 1.5 V 1.5 V 0V t pZH 1 kW R t pHZ CL = 15 pF 1.5 V (Includes Probe and Jig Capacitance) RE Signal Generator VO VOH -0.5 V 0V R GND 50 W PRR = 100 kHz, 50% duty cycle, tr <6 ns, tf <6 ns, ZO = 50 W Figure 17. Receiver Enable Test Circuit and Waveforms, Data Output High 0V VCC D DE A 3V RE 0V R t pZL 1 kW VCC1 tpLZ VOH R CL = 15 pF 1.
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ISO1176 www.ti.com SLLS897D – MARCH 2008 – REVISED MARCH 2010 PARAMETER MEASUREMENT INFORMATION (continued) C = 0.1 mF VCC1 ±1% 2V VCC2 A DE GND1 S1 D C = 0.1 mF ± 1% 54 W B VOH or VOL 0.8 V Success / Fail Criterion: Stable VOH or VOL Outputs R VOH or VOL 1 kW RE GND 1 GND 2 CL = 15 pF (Includes Probe and Jig Capacitance) VTEST Figure 20.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 www.ti.com TYPICAL CHARACTERISTICS DIFFERENTIAL OUTPUT VOLTAGE vs LOAD CURRENT RMS SUPPLY CURRENT vs SIGNALING RATE 100 5 VCC = 5 V VCC = 5.25 V 4 100 Ω 50 Ω VCC = 4.75 V 2.5 2 1.5 1 TA = 25 C 0 50 40 30 5 V VCC1 20 80 5 10 15 Signalling Rate - Mbps Figure 21. Figure 22. DRIVER OUTPUT TRANSITION SKEW vs FREE-AIR TEMPERATURE DRIVER RISE, FALL TIME vs FREE-AIR TEMPERATURE 4 RL = 54 Ω, CL = 50 pF 3.75 VCC = 4.75 V 0.25 VCC = 5 V 0.2 0.
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ISO1176 www.ti.com SLLS897D – MARCH 2008 – REVISED MARCH 2010 TYPICAL CHARACTERISTICS (continued) DRIVER ENABLE SKEW vs FREE-AIR TEMPERATURE HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT 0.7 -99 VCC = 4.75 V 15 pF Load TA = 25°C -89 0.6 IO - Output Current - mA Driver Enable Skew − ns -79 0.5 0.4 VCC = 5.25 V VCC = 5 V 0.3 0.2 -69 -59 -49 -39 -29 -19 0.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 www.ti.com DEVICE INFORMATION DW PACKAGE (TOP VIEW) VCC1 1 16 VCC2 GND 1 2 15 R 3 14 GND 2 NC RE 4 13 B DE D 5 12 6 11 A NC PV 7 10 ISODE GND 1 8 9 GND 2 PACKAGE PIN FUNCTION DESCRIPTION 14 NAME PIN NO.
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ISO1176 www.ti.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 www.ti.com EQUIVALENT CIRCUIT SCHEMATICS D, RE Input VCC1 DE Input VCC1 VCC1 VCC1 VCC1 1 MW 500 W 500 W 1 MW ISODE Output PV Input VCC2 VCC1 VCC1 VCC1 50 kW 5.5 W 500 W 11 W 3.3 V R Output 5 V R Output VCC1 16 VCC1 4W 5.5 W 6.
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ISO1176 www.ti.com SLLS897D – MARCH 2008 – REVISED MARCH 2010 A Input B Input VCC2 16 V VCC2 16 V 18 kW 90 kW 18 kW 90 kW Input Input 16 V 16 V 18 kW 18 kW A and B Outputs VCC2 16 V Output 16 V IEC SAFETY LIMITING VALUES Safety limiting intends to prevent potential damage to the isolation barrier upon failure of input or output circuitry.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 www.ti.com THERMAL CHARACTERISTICS over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP Low-K thermal resistance (1) 168 High-K board(1) 96.1 MAX UNIT qJA Junction-to-air qJB Junction-to-board thermal resistance 61 °C/W qJC Junction-to-case thermal resistance 48 °C/W PD (1) VCC1 = VCC2 = 5.
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ISO1176 www.ti.com SLLS897D – MARCH 2008 – REVISED MARCH 2010 REGULATORY INFORMATION VDE CSA UL Certified according to IEC 60747-5-2 Approved under CSA Component Acceptance Notice Recognized under 1577 Component Recognition Program (1) File Number: 40014131 File Number: 1698195 File Number: E181974 (1) Production tested ≥ 3000 Vrms for 1 second in accordance with UL 1577.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 www.ti.com APPLICATION INFORMATION Transient Voltages Isolating of a circuit insulates it from other circuits and earth, so that noise voltage develops across the insulation rather than circuit components. The most common noise threat to data-line circuits is voltage surges or electrical fast transients that occur after installation. The transient ratings of the ISO1176 standard are sufficient for all but the most severe installations.
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ISO1176 www.ti.com SLLS897D – MARCH 2008 – REVISED MARCH 2010 ISO1176 “Sticky Bit” Issue (Under Certain Conditions) Summary: In applications with sufficient differential noise on the bus, the output of the ISO1176 receiver may “stick” at an incorrect state for up to 30 µs. Description: The ISO1176 isolated Profibus (RS-485) transceiver is rated for signaling up to 40 Mbps on twisted-pair bus lines.
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ISO1176 SLLS897D – MARCH 2008 – REVISED MARCH 2010 www.ti.com REVISION HISTORY Changes from Original (March 2008) to Revision A Page • Added the Bus-Pin ESD Protection bullet and sub bullets to the Features List ................................................................... 1 • Added 3.3-V Inputs are 5-V Tolerant to the Features List ....................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Aug-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device ISO1176DWR 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 16-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) ISO1176DWR SOIC DW 16 2000 367.0 367.0 38.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.