MAX14940GWE+

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Series Information for MAX14940GWE+ - Maxim Integrated

Features

  • feature
    2.75kVRMS Withstand Isolation Voltage for 60 Seconds (VISO)
  • feature
    20Mbps (max) Data Rate
  • feature
    445VRMS Maximum Working Isolation Voltage (VIOWM)
  • feature
    630VPEAK Maximum Repetitive Peak Isolation Voltage (VIORM)
  • feature
    > 30 Years Lifetime at Rated Working Voltage
  • feature
    Compliant with RS-485 EIA/TIA-485 and EIA 61158-2 Type 3 PROFIBUS-DP Standards
  • feature
    High Integration Simplifies Designs
  • feature
    High-Performance Transceiver Enables Flexible Designs
  • feature
    Integrated LDO for Cable-Side Power Can Also Power External Loads Up to 10mA
  • feature
    Integrated Protection for Robust Communication
  • feature
    Integrated Transformer Driver for Power Transfer to Cable-Side Has Up to 80% Efficiency at 150mA Load
  • feature
    Thermal Shutdown
  • feature
    Up to 128 Devices on the Bus
  • feature
    Withstands u00b110kV Surge per IEC 61000-4-5
  • feature
    u00b135kV ESD (HBM) on Driver Outputs/Receiver Inputs

Description

PROFIBUS/RS485 TX RX 20MBPS WSOIC-16
The MAX14940 isolated RS-485/PROFIBUS-DP transceiver provides 2750VRMS (60s) of galvanic isolation between the cable-side (RS-485 driver/receiver-side) and the UART-side of the device. Isolation improves communication by breaking ground loops and reduced noise when there are large differences in ground potential between ports. This device allows for robust communication up to 20Mbps. The MAX14940 includes an integrated 450kHz transformer driver for power transfer to the cable-side of the transceiver using an external transformer. An integrated LDO provides a simple and space-efficient way of designing an isolated DC/DC supply. The MAX14940 includes one half-duplex driver/receiver channel that is fully compliant with both RS-485 and PROFIBUS-DP standards. The receiver is 1/4-unit load, allowing up to 128 transceivers on a common bus. Integrated true fail-safe circuitry ensures a logic-high on the receiver output when inputs are shorted or open. Undervoltage lockout disables the driver when cable-side or UART-side power supplies are below functional levels. The driver outputs/receiver inputs are protected from ±35kV electrostatic discharge (ESD) to GNDB on the cable-side, as specified by the Human Body Model (HBM). The MAX14940 is available in a wide body 16-pin SOIC package and operates over the -40°C to +105°C temperature range.

Specifications

Device Type:
Transceiver
IC Interface Type:
RS485
No. of Drivers:
1Drivers
No. of Receivers:
1Receivers
Supply Voltage Min:
3V
Supply Voltage Max:
5.5V
Driver Case Style:
WSOIC
No. of Pins:
16Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
105°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
To Be Advised
MSL:
MSL 1 - Unlimited
IC Generic Number:
MAX14940
SVHC:
No SVHC (15-Jan-2018)

Alternate Descriptions

Avnet Europe

Single Transmitter/Receiver RS-485 16-Pin SOIC W Tube

Avnet Europe product

Future Electronics

2.75KV Isolated 20Mbps Half-Duplex RS-485 Transceiver with +/-30KV ESD and Integ