IL485W RHOPOINT | Alldatasheet

Document overview

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Technical content

Features

  • 2500 VRMS Isolation (1 min.)
  • 25 ns Maximum Propagation Delay
  • 35 Mbps Data Rate
  • 1 ns Pulse Skew (typ.)
  • Designed for Multi-point Transmission on Long Bus Lines in Noisy Environments
  • ±60 mA Driver Output Capability
  • Thermal Shutdown Protection
  • Meets or Exceeds ANSI RS-485 and ISO 8482:1987(E)
  • −40°C to +85°C Temperature Range
  • PROFIBUS International Component Recognition
  • 16-Pin SOIC Package
  • UL1577 and IEC 61010-2001 Approval

Applications

  • Profibus/RS485 Systems
  • Multiple Data Point Transmission

Description

The IL485W is a galvanically isolated, high-speed differential bus transceiver, designed for bidirectional data communication on balanced transmission lines. The devices use NVE’s patented* IsoLoop spintronic Giant Magnetoresistance (GMR) technology. The IL485W is the first isolated RS-485 interface in a standard 16-pin SOIC package that meets the ANSI Standards EIA/TIA-422-B and RS-485 and is compatible with 3.3V input supplies. The IL485W has current limiting and thermal shutdown features to protect against output short circuits and bus contention situations that could cause excessive power dissipation. With 1 ns pulse skew and 16 ns propagation delay, the IL485W is ideal for PROFIBUS applications. DE/ISODE and IN1/OUT1 allow isolated RTSAS and DTSAS handshaking.

(11) Parameters Symbol Min. Typ. Max. Units Test Conditions Storage Temperature TS −65 150 °C Ambient Operating Temperature TA −40 100 °C Voltage Range at A or B Bus Pins −7 12 V Supply Voltage(1) V DD1, VDD2 −0.5 7 V Digital Input Voltage −0.5 5.5 V Digital Output Voltage −0.5 V DD + 1 V Continuous Total Power Dissipation 725 377 mW 25°C 85°C Maximum Output Current IO 95 mA Lead Solder Temperature 260 °C 10 sec. ESD 2 kV HBM Recommended Operating Conditions Parameters Symbol Min. Typ. Max. Units Test Conditions Supply Voltage VDD1,VDD2 4.5 5.5 V Input Voltage at any Bus Terminal (separately or common mode) VI VIC V High-Level Digital Input Voltage VIH 3.0 V DD1 V Low-Level Digital Input Voltage VIL 0 0.8 V Differential Input Voltage(2) V ID +12/ −7 V High-Level Output Current (Driver) I OH 60 mA High-Level Digital Output Current (Receiver) I OH 8 mA Low-Level Output Current (Driver) IOL −60 mA Low-Level Digital Output Current (Receiver) I OL −8 mA Ambient Operating Temperature TA −40 85 °C Transient Immunity 20 kV/μ s Digital Input Signal Rise and Fall Times t IR, tIF DC Stable Insulation Specifications Parameters Symbol Min. Typ. Max. Units Test Conditions Creepage Distance 8.08 mm Barrier Impedance >1014||7 Ω || pF Leakage Current 0.2 μA 240 V RMS, 60 Hz Safety and Approvals IEC61010-1 TUV Certificate Numbers: N1502812, N1502812-101 Classification: Reinforced Insulation Model Package Pollution Degree Material Group Max. Working Voltage IL485W 0.3" SOIC II III 300 VRMS UL 1577 Component Recognition Program File Number: E207481 Rated 2500VRMS for 1 minute Soldering Profile Per JEDEC J-STD-020C, MSL=2

1 V DD1 Input Power Supply

2 GND 1 Input Power Supply Ground Return

3 R Output Data from Bus

4 OUT 1 Output from Auxiliary Isolation Channel

(if RE is high, R= high impedance)

6 DE Drive Enable

7 D Data Input to Bus

8 GND 1 Input Power Supply Ground Return

9 GND 2 Output Power Supply Ground Return

10 ISODE

Isolated DE Output for use in Profibus applications where the state of the isolated drive enable node needs to be monitored

11 IN 1 No Internal Connection

12 A Non-inverting Bus Line

13 B Inverting Bus Line

14 NC No Internal Connection

15 GND 2 Output Power Supply Ground Return

16 V DD2 Output Power Supply

D GND2 R NC B DE A IN1 ISODE GND1 VDD1 GND2 RE IL485W

Electrical specifications are Tmin to Tmax and VDD = 4.5 V to = 5.5 V unless otherwise stated. Parameters Symbol Min. Typ. (5) Max. Units Test Conditions Input Clamp Voltage VIK −1.5 V I L = −18 mA Output voltage VO 0 6 V I O = 0 Differential Output Voltage(2) |V OD1| 1.5 6 V I O = 0 Differential Output Voltage(2) |V OD2| 1.5 2.5 5 V R L = 54 Ω, VDD = 5 V Differential Output Voltage(2)(6) VOD3 1.5 5 V R L = 54 Ω, VDD = 4.5 V Change in Magnitude of Differential Output Voltage(7) Δ|VOD| ±0.2 V R L = 54 Ω or 100 Ω Common Mode Output Voltage VOC 3 −1 V R L = 54 Ω or 100 Ω Change in Magnitude of Common Mode Output Voltage (7) Δ|VOC| ±0.2 V R L = 54 Ω or 100 Ω Output Current(4) Output Disabled IO 1 −0.8 mA VO = 12 V VO = −7 V High Level Input Current IIH 10 μA V I = 3.5 V Low Level Input Current IIL −10 μA V I = 0.4 V Short-circuit Output Current IOS 250 −150 −250 mΑ VO = −6 V VO = 0 V VO = 8 V Supply Current IDD1 4 6 mA No Load (Outputs Enabled) Switching Specifications Parameters Symbol Min. Typ. (5) Max. Units Test Conditions Maximum Data Rate 35 Mbps R L = 54 Ω, CL = 50 pF Differential Output Prop Delay tD(OD) 16 25 ns R L = 54 Ω, CL = 50 pF Pulse Skew(10) t S(P) 1 6 ns R L = 54 Ω, CL = 50 pF Differential Output Rise & Fall Time t T(OD) 8 10 ns R L = 54 Ω, CL = 50 pF Output Enable Time To High Level tPZH 31 65 ns R L = 54 Ω, CL = 50 pF Output Enable Time To Low Level tPZL 22 35 ns R L = 54 Ω, CL = 50 pF Output Disable Time From High Level t PHZ 28 50 ns R L = 54 Ω, CL = 50 pF Output Disable Time From Low Level t PLZ 16 32 ns R L = 54 Ω, CL = 50 pF Skew Limit(3) t SK(LIM) 2 12 ns R L = 54 Ω, CL = 50 pF Notes (apply to both driver and receiver sections): 1. All voltage values are with respect to netw ork ground except differential I/O bus voltages. 2. Differential input/output voltage is measured at the noninverting terminal A with respect to the inverting terminal B. 3. Skew limit is the maximum propagation delay difference between any two devices at 25°C. 4. The power-off measurement in ANSI Standard EIA/ TIA-422-B applies to disabled outputs only and is not applied to combined inputs and outputs. 5. All typical values are at V DD1,VDD2 = 5 V or VDD1= 3.3 V and TA = 25°C. 6. The minimum V OD2 with a 100 Ω load is either ½ VOD1 or 2 V, whichever is greater. 7. Δ|VOD| and Δ|VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from one logic state to the other. 8. This applies for both power on and power off, refer to ANSI standard RS-485 for exact condition. The EIA/TIA-422-B limit does not apply for a combined driver and receiver terminal. 9. Includes 8 ns read enable time. Maximum propa gation delay is 25 ns after read assertion. 10. Pulse skew is defined as |t PLH – tPHL| of each channel. 11. The relevant test and me asurement methods are given in the Electromagnetic Compatibility section on p. 6. 12. External magnetic field immunity is improved by this factor if the field direction is “end-to-end” rather than to “pin-to-pin” (see diagram on p. 6).

Electrical specifications are Tmin to Tmax and VDD = 4.5 V to = 5.5 V unless otherwise stated. Parameters Symbol Min. Typ. (5) Max. Units Test Conditions Positive-going Input Threshold Voltage VIT+ 0.2 V VO = 2.7 V, IO = −0.4 mA Negative-going Input Threshold Voltage VIT- −0.2 V VO = 0.5 V, IO = 8 mA Hysteresis Voltage (VIT+ − VIT-) V HYS 60 mV High Level Digital Output Voltage VOH VDD − 0.2 V VID = 200 mV IOH = −20 μA Low Level Digital Output Voltage VOL 0.2 V VID = −200 mV IOH = 20 μA High-impedance-state output current I OZ ±20 μA V O = 0.4 to (VDD2−0.5) V Line Input Current(8) I I −0.8 mA VI = 12 V VI = −7 V Other Input(11) = 0 V Input Resistance rI 12 20 kΩ Supply Current IDD2 27 34 mA No load Outputs Enabled Switching Characteristics Parameters Symbol Min. Typ. (5) Max. Units Test Conditions Maximum Data Rate 35 Mbps R L = 54 Ω, CL = 50 pF Propagation Delay(9) tPD 24 32 ns VO = −1.5 V to 1.5 V, CL = 15 pF Pulse Skew(10) t SK(P) 1 6 ns VO = −1.5 V to 1.5 V, CL = 15 pF Skew Limit(3) t SK(LIM) 2 8 ns R L = 54 Ω, CL = 50 pF Output Enable Time To High Level tPZH 17 24 ns C L = 15 pF Output Enable Time To Low Level tPZL 30 45 ns C L = 15 pF Output Disable Time From High Level t PHZ 30 45 ns C L = 15 pF Output Disable Time From Low Level t PLZ 18 27 ns C L = 15 pF Magnetic Field Immunity (11) Magnetic Field Immunity at 5 V Power Frequency Magnetic Immunity H PF 2800 3500 A/m 50Hz/60Hz Pulse Magnetic Field Immunity HPM 4000 4500 A/m t p = 8µs Damped Oscillatory Magnetic Field H OSC 4000 4500 A/m 0.1Hz – 1MHz Cross-axis Immunity Multiplier(12) K X 2.5 Magnetic Field Immunity at 3.3 V Power Frequency Magnetic Immunity H PF 1000 1500 A/m 50Hz/60Hz Pulse Magnetic Field Immunity HPM 1800 2000 A/m t p = 8µs Damped Oscillatory Magnetic Field H OSC 1800 2000 A/m 0.1Hz – 1MHz Cross-axis Immunity Multiplier(12) K X 2.5 Electrostatic Discharge Sensitivity This product has been tested for electrostatic sensitivity to the limits stated in the specifications. However, NVE recommends that all integrated circuits be handled with appropriate care to avoid damage. Damage caused by inappropriate handling or storage could range from performance degradation to complete failure.

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com

Application Information

Electromagnetic Compatibility The IL485W is fully compliant with generic EMC standards EN50081, EN50082-1 and the umbrella line-voltage standard for Information Technology Equipment (ITE) EN61000. The IsoLoop Isolator’s Wheatstone bridge configuration and differential magnetic field signaling ensure excellent EMC performance against all relevant standards. NVE conducted compliance tests in the categories below: EN50081-1 Residential, Commercial & Light Industrial Methods EN55022, EN55014 EN50082-2: Industrial Environment Methods EN61000-4-2 (ESD), EN61000-4-3 (Electromagnetic Field Immunity), EN61000-4-4 (Electrical Transient Immunity), EN61000-4-6 (RFI Immunity), EN61000-4-8 (Power Frequency Magnetic Field Immunity), EN61000-4-9 (Pulsed Magnetic Field), EN61000-4-10 (Damped Oscillatory Magnetic Field) ENV50204 Radiated Field from Digital Telephones (Immunity Test) Immunity to external magnetic fields is even higher if the field direction is “end-to-end” (rather than to “pin-to-pin”) as shown in the diagram at right. Dynamic Power Consumption IsoLoop Isolators achieve their low power consumption from the way they transmit data across the isolation barrier. By detecting the edge transitions of the input logic signal and converting these to narrow current pulses, a magnetic field is created around the GMR Wheatstone bridge. Depending on the direction of the magnetic field, the bridge causes the output comparator to switch following the input logic signal. Since the current pulses are narrow, about 2.5 ns, the power consumption is independent of mark-to-space ratio and solely dependent on frequency. This has obvious advantages over optocouplers, which have power consumption heavily dependent on frequency and time. The approximate power supply current per channel is: I IN = 40 x f x 1 mA Where f = operating frequency f MAX = 50 MHz Power Supply Decoupling Both VDD1 and VDD2 must be bypassed with 47 nF ceramic capacitors. These should be placed as close as possible to VDD pins for proper operation. Additionally, VDD2 should be bypassed with a 10 µF tantalum capacitor. Application PROFIBUS Fault Interrogation IL485W IL485W fMAX 4

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com 0.3" 16-pin SOIC Package NOM Pin 1 identified by either an indent or a marked dot 0.287 (7.29) 0.300 (7.62) Dimensions in inches (mm) 0.08 (2.0) 0.10 (2.5) 0.092 (2.34) 0.105 (2.67) 0.397 (10.1) 0.413 (10.5) 0.013 (0.3) 0.020 (0.5) 0.394 (10.00) 0.419 (10.64) 0.040 (1.0) 0.060 (1.5) 0.004 (0.1) 0.012 (0.3) 0.007 (0.2) 0.013 (0.3) 0.016 (0.4) 0.050 (1.3) Pin spacing is a BASIC dimension; tolerances do not accumulate NOTE: Ordering Information and Valid Part Numbers IL 485W E TR13 Bulk Packaging Blank = Tube TR = 13'' Tape and Reel Package Blank = 80/20 Tin/Lead Plating E = RoHS Compliant Base Part Number 485W = RS-485 Transceiver with handshake Product Family IL = Isolators Valid Part Numbers IL485W IL485WE All IL485W part types are available on tape and reel. RoHS COMPLIANT

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com ISB-DS-001-IL485W-N March 2008 Changes

  • Added magnetic field immunity and electromagnetic compatibility specifications.
  • Added note on package drawing that pin-spacing tolerances are non-accumulating. ISB-DS-001-IL485W-M Changes
  • Changed ordering information to reflect that devices are now fully RoHS compliant with no exemptions. ISB-DS-001-IL485W-L Changes
  • Reorganized supply current specifications; misc. minor changes ISB-DS-001-IL485W-K April 2007 Changes
  • Eliminated soldering profile chart ISB-DS-001-IL485W-J December 2006 Changes
  • Updated open input state in truth table ISB-DS-001-IL485W-I Changes
  • Updated package drawing; misc. ISB-DS-001-IL485W-H Changes
  • Update UL and IEC approvals ISB-DS-001-IL485W-G Changes
  • Revision letter added.
  • Ordering Information removed.
  • IEC 61010-1 Classification “Reinforced Insulation” added.
  • Notes added.
  • Electrostatic Discharge Sensitivity note moved to page 5.
  • Electrostatic Discharge Sensitivity Note added.
  • Notes moved to page 3.
  • Ordering Information added.

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com About NVE An ISO 9001 Certified Company NVE Corporation manufactures innovative products based on unique spintronic Giant Magnetoresistive (GMR) technology. Products include Magnetic Field Sensors, Magnetic Field Gradient Sensors (Gradiometers), Digital Magnetic Field Sensors, Digital Signal Isolators, and Isolated Bus Transceivers. NVE pioneered spintronics and in 1994 introduced the world’s first products using GMR material, a line of ultra-precise magnetic sensors for position, magnetic media, gear speed and current sensing. NVE Corporation

11409 Valley View Road

Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax: (952) 829-9189 Internet: www.nve.com e-mail: isoinfo@nve.com The information provided by NVE Corporation is believed to be accurate. However, no responsibility is assumed by NVE Corporation for its use, nor for any infringement of patents, nor rights or licenses granted to third parties, which may result from its use. No license is granted by implication, or otherwise, under any patent or patent rights of NVE Corporation. NVE Corporation does not authorize, nor warrant, any NVE Corporation product for use in life support devices or systems or other critical applications, without the express written approval of the President of NVE Corporation. ISB-DS-001-IL485W-N March 2008