IL485W ETC | Alldatasheet

Document overview

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Technical content

Tel: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Germany: +49 (0) 692 199 8606 Fax: +49 (0) 692 199 8595 Email: sales@rhopointcomponents.com Website: www.rhopointcomponents.com The IL485W is a galvanically isolated, high- speed differential bus transceiver, designed for bi-directional data communication on balanced transmission lines. The IL485W uses patented IsoLoop ® technology and is the first isolated RS-485 interface available in a standard 16 pin SOIC package, which meets the ANSI Standards EIA/TIA-422-B and RS485. The IL485W has current limiting and thermal shutdown features to protect against output short circuits and bus contention situations where these may cause excessive power dissipation. With a 1 nsec pulse skew and 16 nsec propagation delay, the IL485W is ideal for PROFIBUS applications. Use of DE/ISODE and IN1/OUT1 allows the IL485W to perform the handshaking operations of RTSAS and DTSAS of PROFIBUS.

  • 2500 Vrms Isolation (1 min)
  • 25 ns Maximum Propagation Delay
  • 35 MBaud 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
  • 16 Pin SOIC Package
  • PROFIBUS International Component Recognition
  • UL1577 Approval (pending)
  • IEC 61010-1 Approval (pending)

Applications

  • PROFIBUS/RS485
  • RS-485 Systems
  • Multiple Data Point Transmission Isolated RS485 Interface with Handshake IL485W VID (A-B) DE RE ISODE R D MODE ≥ 0.2V L L L H X Receive ≤ -0.2V L L L L X Receive -7<VID<12 X H X Z X Receive/ Drive ≥ 1.5 H L H H H Drive ≤ -1.5 H L H L L Drive Open L L L H X Receive H = High Level L = Low Level X = Irrelevant Z = High Impedance Function Table Functional Diagram (IL485W) Dimensions in mm PROFIBUS Fault Interrogation

Tel: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Germany: +49 (0) 692 199 8606 Fax: +49 (0) 692 199 8595 Email: sales@rhopointcomponents.com Website: www.rhopointcomponents.com Pin Configuration (IL485W) Pin Connections (IL485W)

1 VDD1 Input Power Supply

2 GND1 Input Power Supply Ground Return

3 R Output Data from Bus

4 OUT1 Output from Auxiliary Isolation

5 RE Read Data Enable

(If RE is high, R = High Impedance)

6 DE Drive Enable

7 D Data Input to Bus

8 GND1 Input Power Supply Ground Return

9 GND2 Output Power Supply Ground Return

10 ISODE Isolated DE Output for use in

Profibus applications where the state of the drive enable node needs to be monitored

11 IN1 Input to the Auxiliary Isolation

12 A ‘A’ Bus (Receive- True)

13 B ‘B’ Bus (Receive - Inverse)

14 n/c No Internal Connection

15 GND2 Output Power Supply Return

16 VDD2 Output Power Supply

PARAMETERS SYMBOL MIN. MAX. UNITS Storage Temperature TS -65 150 °C Ambient Operating Temperature TA -40 85 °C Voltage Range at A or B Bus Pins -7 12 Volts Supply Voltage(1) VDD1, VDD2 -0.5 7 Volts Digital Input Voltage -0.5 5.5 Volts Digital Output Voltage -0.5 VDD +0.1 Volts Continuous Total (25°C) 725 mWatts Power Dissipation (85°C) 377 mWatts Maximum Output Current IO 95 mA Lead Solder Temperature (10s) 260 °C ESD 2kV Human Body Model Absolute Maximum Ratings PARAMETERS CONDITION MIN. TYP. MAX. UNITS Creepage Distance (External) 8.077 mm Barrier Impedance >1014||7 Ω ||pF Leakage Current 240VRMS 0.2 µAmps 60Hz Insulation Specifications PARAMETERS SYMBOL MIN. MAX. UNITS Supply Voltage VDD1, VDD2 4.5 5.5 Volts Input Voltage at any bus terminal VI 12 (separately or common mode) VIC -7 Volts High-Level Digital Input Voltage VIH 3 Volts Low-Level Digital Input Voltage VIL 0.8 Volts Differential Input Voltage (2) VID +12/ - 7 Volts High-Level Output Current (Driver) IOH -60 mA High-Level Digital Output Current (Receiver) IOH 8 mA Low-Level Output Current (Driver) IOL 60 mA Low-Level Digital Output Current (Receiver) IOL 8 mA Operating Free Air Temperature TA -40 85 °C Digital Input Signal Rise and Fall Times tIR, tIF DC Stable Recommended Operating Conditions IEC61010-1 TUV Certificate Numbers: Pending Classifications as Table 1 MODEL POLLUTION MATERIAL MAX WORKING PACKAGE TYPE DEGREE GROUP VOLTAGE 16-SOIC (7.5mm) IL485W II III 300VRMS ü UL 1577 Component Recognition Program. File # Pending Rated 2500VRMS for 1 min.

Tel: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Germany: +49 (0) 692 199 8606 Fax: +49 (0) 692 199 8595 Email: sales@rhopointcomponents.com Website: www.rhopointcomponents.com PARAMETERS SYMBOL MIN. TYP.(5) MAX. UNITS TEST CONDITIONS Input Clamp Voltage VIK -1.5 V IL = -18mA Output Voltage VO 0 6 V IO = 0 Differential Output Voltage |VOD1| 1.5 6 V IO = 0 Differential Output Voltage (6) |VOD2| 1.5 2.5 5 V RL = 54Ω Differential Output Voltage VOD3 1.5 5 V Vtest = -7 to 12V Change in Magnitude of (7) Differential Output Voltage Δ |VOD| ±0.2 V RL = 54 or 100 Ω Common Mode Output Voltage VOC 3 V RL = 54 or 100 Ω Change in Magnitude of (7) Common Mode Output Voltage Δ |VOC| ±0.2 V RL = 54 or 100 Ω Output Current (4) 1 mA Output Disabled VO = 12 IO -0.8 mA VO = -7 High Level Input Current IIH 10 µA VI = 3.5V Low Level Input Current IIL -10 µA VI = 0.4V Short-Circuit Output Current -250 mA VO = -6 -150 mA VO = 0 IOS 250 mA VO = 8 Supply Current (VDD2 = +5V) IDD2 27 34 mA No Load (Outputs Enabled) (VDD1 = +5V) IDD1 5 10 mA Switching Characteristics Maximum Data Rate 35 Mbd RL = 54Ω , CL = 50pF Differential Output Delay Time tD (OD) 16 25 ns RL = 54Ω , CL = 50pF Pulse Skew (10) tSK (P) 1 6 ns RL = 54Ω , CL = 50pF Differential Output Transition Time tT (OD) 8 10 ns RL = 54Ω , CL = 50pF Output Enable Time to High Level tPZH 31 65 ns RL = 54Ω , CL = 50pF Output Enable Time to Low Level tPZL 22 35 ns RL = 54Ω , CL = 50pF Output Disable Time from High Level tPHZ 28 50 ns RL = 54Ω , CL = 50pF Output Disable Time from Low Level tPLZ 16 32 ns RL = 54Ω , CL = 50pF Skew Limit (3) tSK (LIM) 2 8 ns RL = 54Ω , CL = 50pF Driver Section Specifications All Specifications are Tmin to Tmax unless otherwise stated 1. All Voltage values are with respect to network ground except differential I/O bus voltages. 2. Differential input/output voltage is measured at the noninverting terminal A/Y with respect to the inverting terminal B/Z. 3. Skew limit is the maximum difference in any two channels in one device. 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 = 5V and T A = 25°C. 6. The minimum V OD2 with a 100 Ω load is either ½V OD1 or 2V, whichever is greater. 7. Δ |VOD| and Δ |VOC| are the changes in magnitude of V OD and V OC, respectively, that occur when the input is changed form 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 propagation delay is 25 ns after read assertion. 10. Pulse skew is defined as the |tPLH -tPHL| of each channel. Notes

Tel: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255 Germany: +49 (0) 692 199 8606 Fax: +49 (0) 692 199 8595 Email: sales@rhopointcomponents.com Website: www.rhopointcomponents.com PARAMETERS SYMBOL MIN. TYP. (5) MAX. UNITS TEST CONDITIONS Positive-going Input Threshold Voltage VIT+ 0.2 V VO = 2.7V, IO = -0.4mA Negative-going Input Threshold Voltage VIT- -0.2 V VO = 0.5V, IO = 8mA Hysteresis Voltage V IT+ VIT- Vhys 60 mV High Level Digital Output Voltage VOH VDD -0.2 V VID = 200mV, IOH = -20µA Low Level Digital Output Voltage VOL 0.2 V VID = -200mV, IOL = 20µA High-Impedance-State Output Current IOZ ±20 µA VO = 0.4 to (V DD2 -0.5) V Line Input Current (8) II 1 mA Other Input - 0V VI = 12V -0.8 VI = -7V Input Resistance rI 50 kΩ Supply Current (VDD2 = +5) IDD2 27 34 mA No Load (Outputs Enabled) (VDD1 = +5) IDD1 5 10 mA Switching Characteristics Maximum Data Rate 35 Mbd RL = 54Ω , CL = 50pF Propagation Time (9) tPD 24 32 ns VO = -1.5 to 1.5V, C L = 15pF Pulse Skew (10) tSK(P) 1 6 ns VO = -1.5 to 1.5V, C L = 15pF Skew Limit (3) tSK(lim) 2 8 ns RL = 54Ω , CL = 50pF Output Enable Time to High Level tPZH 17 24 ns CL = 15pF Output Enable Time to Low Level tPZL 30 45 ns CL = 15pF Output Disable Time from High Level tPHZ 30 45 ns CL = 15pF Output Disable Time from Low Level tPLZ 18 27 ns CL = 15pF Receiver Section Specifications All Specifications are Tmin to Tmax unless otherwise stated