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SP3070E-3080E Enhanced 3.3V/5V RS485

SP3070E-3080E Enhanced 3.3V/5V RS485. Features & Benefits. 3.3V Full Duplex RS485 Transceiver (SP3070 family) 5.0V Full Duplex RS485 Transceiver (SP3080 family) Failsafe on open, short or terminated 1/8 th Unit Load, 256 per bus Robust ESD Specifications: ±15KV Human Body Model

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SP3070E-3080E Enhanced 3.3V/5V RS485

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  1. SP3070E-3080EEnhanced 3.3V/5V RS485

  2. Features & Benefits • 3.3V Full Duplex RS485 Transceiver (SP3070 family) • 5.0V Full Duplex RS485 Transceiver (SP3080 family) • Failsafe on open, short or terminated • 1/8th Unit Load, 256 per bus • Robust ESD Specifications: • ±15KV Human Body Model • ±15KV IEC1000-4-2 Air Discharge • ±8KV IEC1000-4-2 Contact Discharge • Hot Swap protected control inputs • Thermal overload and short circuit over-current protection • Ultra-low 400μA Quiescent Current (SP3080 family) • 1μA shutdown mode Company Confidential

  3. New 3.3V/5V RS485 Devices All of these new devices above have 15kV ESD protection, 1/8th load receivers, receiver failsafe on open or shorted inputs, glitch protected inputs, thermal overload protection Company Confidential

  4. Half or Full Duplex Architectures Half Duplex • Half Duplex – Driver outputs connected to Receiver inputs • Small 8-pin package size • Bi-directional bus on a single-pair wire • Most commonly used RS485 architecture • Full Duplex – Independent Driver outputs (AB) & Receiver inputs (XY) • Uses two signal-pairs (plus a ground-return) • One-directional signals, simplified flow control • Maximum throughput per channel (not shared) • Use for RS422 (V.11) in Telecom/Data-Com, SCSI-bus, data converters & bus extenders 8-pin SP3082E SP3085E SP3088E Full Duplex 8-pin SP3081E SP3084E SP3087E 14-pin SP3080E SP3083E SP3086E Company Confidential

  5. B A R Enhanced Failsafe Protection • SP3070-3080 include an Enhanced Failsafe • Failsafe protection if inputs either open or SHORTED • Protects if there is a termination resistor on the line • Protects if bus-driver is off (tri-state) or loses power • Protects if wires were pinched together, bridged or shorted • Most standard RS485 will only failsafe if the receiver inputs are OPEN • i.e. if the cable is unplugged, inputs floating • Advanced Failsafe guarantees logic 1 if A=B (shorted or open) Company Confidential

  6. SP3070-3080 “1/8th Unit Load” • A standard RS485 transceiver can drive enough signal to support up to 32 “unit loads” • SP3070-80 devices require only 1/8th the input-signal current of standard RS485 transceivers • Less loading equals more signal margin, better noise rejection • Run with eight times as many transceivers on a multi-drop bus • Support large networks of RS485-connected nodes • Eliminate costly repeaters • 256 maximum instead of 32 • Slew limited SP3070-3075SP3080-SP3085 may eliminate line-termination • Possible to support HUNDREDSof nodes per network segment (1/8th) Company Confidential

  7. Robust ESD Protection • Enhanced durability for use in demanding applications • Built-in protection against accidental static discharge • ±15,000 Volt Human Body Model • ±15,000 Volt Air-Gap (IEC61000-4-2) • ±8,000 Volt Contact Discharge (IEC61000-4-2) • Eliminate costly external TVS components ESD Pulse Company Confidential

  8. Optimized for Speed or Distance Communicate reliably over long, noisy lines without complex line-termination 115kbps Slew Limited: SP3070E/SP3080E SP3071E/SP3081E SP3072E/SP3082E 500kbps Slew Limited:SP3073E/SP3083E SP3074E/SP3084E SP3075E/SP3085E Good data rates,Low EMI 20Mbps High Speed:SP3076E/SP3086ESP3077E/SP3087ESP3078E/SP3088E Fastest data rates Company Confidential

  9. Target Applications • HVAC and lighting control • Alarm and security systems • Remote utility meter reading • Long or un-terminated transmission lines • Pipeline monitoring • Sensors and instrumentation • RS422 and V.11 transceivers Company Confidential

  10. Typical RS485 Full-Duplex Network SP3070E/SP3080E Up to 256 other SP3070/SP3080’s without repeaters Line lengths up to 1200 meters or more Data rates up to 115kbps Line bias not required (advanced failsafe) Company Confidential

  11. Typical RS422/V.11 Application SP3070E/SP3080EDriver • RS422 and V.11 compatible • Use point-to-point or point-to-multipoint SP3070E/SP3080EReceivers Company Confidential

  12. RS-485 Example: Security Networks • Many nodes, long cable-runs in noisy conditions • Support for high data rates (video) Video Data Control, Pan, Zoom Control and Monitoring AccessPoints Alarms & Sensors Video Surveillance Company Confidential

  13. RS-485 Example: Utilities, Industrial Utility Meters, Instrumentation Valves &Actuators Control-Automation • SP3082E - ideal for long cables & noisy environments • Communicate with hundreds of dispersed nodes • Robust features (ESD, Failsafe, Hot-Swap) Remote Monitor Company Confidential

  14. RS-485 Example: Instrumentation • Link a central data-logger to multiple far-away remote stations • 5V low power operation for bus-powered sensors • 115kbps slew limited drivers can run without termination SP3071E/SP3081E WeatherMonitor SP3071E/SP3081E Company Confidential

  15. Small Standard Package Footprint Small, Pb-free packages 8 pin Narrow-SOIC Company Confidential

  16. Small Standard Package Footprint Small, Pb-free packages 14 pin Narrow-SOIC Company Confidential

  17. Part Number Selection Guide Company Confidential

  18. Part Number Selection Guide Company Confidential

  19. Part Number Selection Guide Company Confidential

  20. Part Number Selection Guide Company Confidential

  21. SP3070 Family Competitive Comparison Company Confidential

  22. SP3080 Family Competitive Comparison Company Confidential

  23. SP3080 Competitive Analysis • No other competitor matches the entire feature set of SP3080 • MAX13080E (Maxim), intro April 2005 • ISL83080E (Intersil), intro Sept. 2005 • SP3080E has lower Icc than either of them • Neither has +/-15kV IEC-ESD • Several competitors have a few similar features • Very few have Hot-swap, 1/8th UL and Failsafe-short • Several do have slew limits at either 115 or 250kbps • Most have much higher Icc power consumption Company Confidential

  24. SP3080 Competitive Overview Company Confidential

  25. Comp. Analysis (Intersil and Maxim) Company Confidential

  26. Comp. Analysis (LTC, TI, Exar) Company Confidential

  27. Value Proposition • Advanced RS485 transceiver for rugged environments • Failsafe receiver does not require line-biasing • 1/8th Unit Load supports up to 256 devices on a bus • Slew-limited, low data-rate signal is more tolerant of imperfect line termination and is less prone to EMI • Built in ESD protection up to +/-15,000 volts • Protected against over-current or over-temperature from line-shorts, bus contention, or cable-faults • Lower power consumption than comparable devices Company Confidential

  28. Next Steps • Visit Commercial and Industrial customers next month • Communicate SP3070-3080 Value Propositions • Get Design Win! Company Confidential

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