General Description

The MAX14770E is a half-duplex, Q35kV high ESD protected, 20Mbps 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 is available in an 8-pin SO and an 8-pin FMAX® specified over the extended temperature range.

It is also available in a tiny TDFN (3mm x 3mm) package and specified over the automotive (-40NC to +125NC) temperature range.

Benefits and Features

♦ Integrated Protection Increases Robustness

   ±35kV HBM ESD per JEDEC JS-001-2012

   ±12kV Contact ESD per IEC 61000-4-2

   ±15kV Air Gap ESD per IEC 61000-4-2

   True Fail-Safe Receiver Prevents False

   Transitions on Receiver Input Short or Open

   Hot Swap Eliminates False Transitions During

   Power-Up or Hot Insertion

   Short-Circuit-Protected Outputs

   Thermal Shutdown Circuitry Prevents Excessive

   Power Dissipation

♦ Low Current Reduces Power Consumption

   15µA Shutdown Current

   2.5mA Supply Current Typical with No Load

♦ Profibus Compliant with Minimum 20Mbps Data Rate

♦ Allows Up to 128 Transceivers on the Bus

♦ -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