General Description
The MAX14770E is a half-duplex, Q35kV high ESD protected transceiver for PROFIBUS-DP and RS-485 applications. In addition, it can be used for RS-422/V.11 communications. The MAX14770E is designed to meet IEC 61158-2, TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards.
The MAX14770E operates from a +5V supply and has true fail-safe circuitry that guarantees a logic-high receiver output when the receiver inputs are open or shorted.
The MAX14770E features a 1/4 standard-unit load receiver input impedance, allowing up to 128 1/4 unit load transceivers on the bus. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal-shutdown circuitry.
The MAX14770E is available in an 8-pin SO and an 8-pin FMAX® specified over the extended (-40°C to +105°C) temperature range. It is also available in a tiny TDFN (3mm x 3mm) package and specified over the automotive (-40°C to +125°C) temperature range.

Features
♦ Meets EIA 61158-2 Type 3 PROFIBUS-DP
♦ +4.5V to +5.5V Supply Voltage
♦ 20Mbps Data Rate
♦ Short-Circuit Protected
♦ True Fail-Safe Receiver
♦ Thermal-Shutdown Protected
♦ Hot Swappable
♦ High ESD Protection
   ±35kV Human Body Model (HBM)
   ±20kV IEC 61000-4-2 Air Gap
   ±10kV IEC 61000-4-2 Contact
♦ -40°C to +125°C Automotive Temperature Range
   in Tiny 8-Pin (3mm x 3mm) TDFN
  
Applications
   PROFIBUS-DP Networks
   Industrial Fieldbuses
   Motion Controllers
   RS-485 Networks
   Machine Encoders