Document
MAX14770E ±35kV High-ESD Profibus RS-485 Transceiver
General Description
The MAX14770E is a half-duplex, Q35kV high ESDprotected, 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/EIA485-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.
PROFIBUS-DP Networks Industrial Fieldbuses Motion Controllers RS-485 Networks Machine Encoders
Applications
Benefits and Features
S 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
S Low Current Reduces Power Consumption 15µA Shutdown Current 2.5mA Supply Current Typical with No Load
S Profibus Compliant with Minimum 20Mbps Data Rate
S Allows Up to 128 Transceivers on the Bus
S -40°C to +125°C Automotive Temperature Range in Tiny 8-Pin (3mm x 3mm) TDFN
Typical PROFIBUS-DP Operating Circuit appears at end of data sheet.
Functional Diagram
Ordering Information
PART
TEMP RANGE
PINPACKAGE
MAX14770EESA+T -40NC to +85NC 8 SO
MAX14770EGSA+T -40NC to +105NC 8 SO MAX14770EGUA+T -40NC to +105NC 8 FMAX
MAX14770EATA+T -40NC to +125NC 8 TDFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. *EP = Exposed pad.
TOP MARK
— — — BMG
RO R RE
SHUTDOWN DE
A B
DI D
MAX14770E
The PROFIBUS PROCESS FIELD BUS logo is a registered trademark of PROFIBUS and PROFINET International (PI). µMAX 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 Maxim’s website at www.maximintegrated.com.
19-5017; Rev 5; 1/15
MAX14770E ±35kV High-ESD Profibus RS-485 Transceiver
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND.) VCC........................................................................-0.3V to +6.0V RE, RO........................................................-0.3V to (VCC + 0.3V) DE, DI....................................................................-0.3V to +6.0V A, B......................................................................-8.0V to +13.0V Short-Circuit Duration (RO, A, B) to GND..................Continuous
Continuous Power Dissipation (TA = +70NC) SO (derate 7.6mW/NC above +70NC)..........................606mW TDFN (derate 24.4mW/NC above +70NC)..................1951mW FMAX (derate 4.8mW/NC above +70NC)...................387.8mW
Operating Temperature Range.