MAX14770E High-ESD Profibus RS-485 Transceiver General Description Features The MAX14770E is a half-duplex, Q35kV high ESD- S Meets EIA 61158-2 Type 3 PROFIBUS-DP protected transceiver for PROFIBUS-DP and RS-485 S +4.5V to +5.5V Supply Voltage applications. In addition, it can be used for RS-422/V.11 S 20Mbps Data Rate communications. The MAX14770E is designed to meet S Short-Circuit Protected IEC 61158-2, TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards. S True Fail-Safe Receiver The MAX14770E operates from a +5V supply and has S Thermal-Shutdown Protected true fail-safe circuitry that guarantees a logic-high receiv- S Hot Swappable er output when the receiver inputs are open or shorted. S High ESD Protection The MAX14770E features a 1/4 standard-unit load 35kV Human Body Model (HBM) receiver input impedance, allowing up to 128 1/4 unit load transceivers on the bus. Drivers are short-circuit 20kV IEC 61000-4-2 Air Gap current limited and are protected against excessive 10kV IEC 61000-4-2 Contact power dissipation by thermal-shutdown circuitry. S -40NC to +125NC Automotive Temperature Range The MAX14770E is available in an 8-pin SO and an 8-pin in Tiny 8-Pin (3mm x 3mm) TDFN FMAX specified over the extended (-40NC to +105NC) tem- perature range. It is also available in a tiny TDFN (3mm x 3mm) package and specified over the automotive (-40NC Ordering Information to +125NC) temperature range. PIN- TOP PART TEMP RANGE PACKAGE MARK Applications MAX14770EGUA+T -40NC to +105NC 8 FMAX PROFIBUS-DP Networks MAX14770EGSA+T -40NC to +105NC 8 SO Industrial Fieldbuses MAX14770EATA+T -40NC to +125NC 8 TDFN-EP* BMG Motion Controllers +Denotes a lead(Pb)-free/RoHS-compliant package. RS-485 Networks T = Tape and reel. *EP = Exposed pad. Machine Encoders Functional Diagram RO R Typical PROFIBUS-DP Operating Circuit appears at end of data sheet. RE A SHUTDOWN B DE DI D MAX14770E The PROFI BUS PROCESS FIELD BUS logo is a registered trademark of PROFIBUS and PROFINET International (PI). MAX is a registered trademark of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-5017 Rev 3 10/12MAX14770E High-ESD Profibus RS-485 Transceiver ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) Operating Temperature Range V .......................................................................-0.3V to +6.0V CC FMAX.............................................................-40NC to +105NC RE, RO .......................................................-0.3V to (V + 0.3V) CC SO ................................................................. -40NC to +105NC DE, DI ...................................................................-0.3V to +6.0V TDFN ............................................................. -40NC to +125NC A, B .....................................................................-8.0V to +13.0V Storage Temperature Range ............................ -65NC to +150NC Short-Circuit Duration (RO, A, B) to GND .................Continuous Junction Temperature Range ........................... -40NC to +150NC Continuous Power Dissipation (T = +70NC) A Lead Temperature (soldering, 10s) ................................+300NC SO (derate 7.6mW/NC above +70NC) .........................606mW Soldering Temperature (reflow) ......................................+260NC TDFN (derate 24.4mW/NC above +70NC) .................1951mW FMAX (derate 4.8mW/NC above +70NC) ..................387.8mW PACKAGE THERMAL CHARACTERISTICS (Note 1) SO TDFN Junction-to-Ambient Thermal Resistance (q ) ........132C/W Junction-to-Ambient Thermal Resistance (q ) ..........41C/W JA JA Junction-to-Case Thermal Resistance (q )...............38C/W Junction-to-Case Thermal Resistance (q ).................8C/W JC JC MAX Junction-to-Ambient Thermal Resistance (q ) .....206.3C/W JA Junction-to-Case Thermal Resistance (q )...............42C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +5V Q10%, T = T to T , unless otherwise noted. Typical values are at V = +5V, T = +25NC.) (Note 2) CC A MIN MAX CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Power-Supply Range V 4.5 5.5 V CC DE = 1, RE = 0 or Supply Current I 2.5 4 mA CC DE = 0, RE = 0 or DE = 1, RE = 1 no load Shutdown Supply I 15 FA SH DE = 0, RE = 1 Current DRIVER Differential Driver V R = 54I, DI = V or GND Figure 1 2.1 V OD L CC Output Differential Driver V Figure 2 (Note 3) 4.0 6.8 V ODPP Peak-to-Peak Output Change in Magnitude of Differential Output -0.2 0 +0.2 V DV R = 54I Figure 1 (Note 4) OD L Voltage Driver Common- V R = 54I Figure 1 1.8 3 V OC L Mode Output Voltage Change in Common- DV R = 54I Figure 1 (Note 4) -0.2 +0.2 V OC L Mode Voltage Driver Short-Circuit 0V P V P +12V output low +250 OUT Output Current I mA OSD -7V P V P V output high -250 (Note 5) OUT CC 2 Maxim Integrated