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Details for MAX14940GWE+ by Maxim Integrated
Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs
PROFIBUS/RS485 TX RX 20MBPS WSOIC-16
MAX14940GWE+ image

MAX14940GWE+ by Maxim Integrated

PROFIBUS/RS485 TX RX 20MBPS WSOIC-16
Features
2.75kVRMS Withstand Isolation Voltage for 60 Seconds (VISO)
20Mbps (max) Data Rate
445VRMS Maximum Working Isolation Voltage (VIOWM)
630VPEAK Maximum Repetitive Peak Isolation Voltage (VIORM)
> 30 Years Lifetime at Rated Working Voltage
Compliant with RS-485 EIA/TIA-485 and EIA 61158-2 Type 3 PROFIBUS-DP Standards
High Integration Simplifies Designs
High-Performance Transceiver Enables Flexible Designs
Integrated LDO for Cable-Side Power Can Also Power External Loads Up to 10mA
Integrated Protection for Robust Communication
Integrated Transformer Driver for Power Transfer to Cable-Side Has Up to 80% Efficiency at 150mA Load
Thermal Shutdown
Up to 128 Devices on the Bus
Withstands u00b110kV Surge per IEC 61000-4-5
u00b135kV ESD (HBM) on Driver Outputs/Receiver Inputs
Part Information
MAX14940GWE+ image
RoHS Compliant
Description
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
Single Transmitter/Receiver RS-485 16-Pin SOIC W Tube Avnet America
Single Transmitter/Receiver RS-485 16-Pin SOIC W Tube Avnet Europe
2.75KV Isolated 20Mbps Half-Duplex RS-485 Transceiver with +/-30KV ESD and Integ Future Electronics