MAX14946EWE+ by Analog Devices

2.75kVRMS Isolated 500kbps Half-Duplex RS-485/RS-422 Transceiver with ±30kV ESD Protection and Integrated Transformer Driver

Status: Active
Series: MAX14946
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The MAX14946 isolated RS-485/RS-422 transceiver provides 2750VRMS (60s) of galvanic isolation between the cable side (RS-485/RS-422 driver/receiver side) and the UART side of the device. Isolation improves communication by breaking ground loops and reduces noise when there are large differences in ground potential between ports. This device allows for robust communication up to 500kbps. The device 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 architecture for providing power to the cable-side of the IC. The device includes one half-duplex driver/receiver channel. The receiver is 1/8-unit load, allowing up to 256 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 ±30kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the Human Body Model (HBM). The MAX14946 is available in a wide-body, 16-pin SOIC package and operates over the -40°C to +85°C temperature range.

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Prices starting from US$5.07

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Features

High Integration Simplifies Designs Integrated LDO for Cable-Side Power Integrated Transformer Driver for Power Transfer to Cable Side Has Up to 80% Efficiency at 150mA Load
Integrated LDO for Cable-Side Power
Integrated Transformer Driver for Power Transfer to Cable Side Has Up to 80% Efficiency at 150mA Load
High-Performance Transceiver Enables Flexible Designs Compliant with RS-485 EIA/TIA-485 Standard 500kbps (max) Data Rate Up to 256 Devices on the Bus
Compliant with RS-485 EIA/TIA-485 Standard
500kbps (max) Data Rate
Up to 256 Devices on the Bus
Integrated Protection for Robust Communication ±30kV ESD (HBM) on Driver Outputs/Receiver Inputs 2.75kVRMS Withstand-Isolation Voltage for 60s (VISO) 630VPEAK Maximum Repetitive Peak-Isolation Voltage (VIORM) 445VRMS Maximum Working-Isolation Voltage (VIOWM) > 30 Years Lifetime at Rated Working Voltage Withstands ±10kV Surge per IEC 61000-4-5 Thermal Shutdown
±30kV ESD (HBM) on Driver Outputs/Receiver Inputs
2.75kVRMS Withstand-Isolation Voltage for 60s (VISO)
630VPEAK Maximum Repetitive Peak-Isolation Voltage (VIORM)
445VRMS Maximum Working-Isolation Voltage (VIOWM)
> 30 Years Lifetime at Rated Working Voltage
Withstands ±10kV Surge per IEC 61000-4-5
Thermal Shutdown

Specifications

# Tx/Rx 1Tx + 1Rx
Duplex Half
VSUPPLY (V) 5
Data Rate (kbps) (min) 500
Galvanic Isolation (±V) 2750
ICC (mA) (typ) 4
ESD Protect. (±kV) 35
Tx EN Yes
Rx EN Yes
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (W) HYBRID/16
BudgetaryPrice (See Notes) 4.23

MAX14946EWE+ Semiconductors - ICs by Analog Devices

RS422/485 TRANSCEIVER 500KBPS WSOIC-16

Semiconductors - ICs
> Drivers & Interfaces
> RS232, RS485, RS422 Isolated Transceivers
Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The MAX14946 isolated RS-485/RS-422 transceiver provides 2750VRMS (60s) of galvanic isolation between the cable side (RS-485/RS-422 driver/receiver side) and the UARTside of the device. Isolation improves communication by breaking ground loops and reduces noise when there are large differences in ground potential between ports. This device allows for robust communication up to 500kbps. The device 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 architecture for providing power to the cable-side of the IC. The device includes one half-duplex driver/receiver channel. The receiver is 1/8-unit load, allowing up to 256 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 ±30kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the Human Body Model (HBM). The MAX14946 is available in a wide-body, 16-pin SOIC package and operates over the -40°C to +85°C temperature range.

Specifications

Device Type Transceiver
IC Interface Type RS422 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 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
IC Generic Number MAX14946
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

2.75KV Isolated 500kbps Half-D | Analog Devices
Transceiver, Rs422/Rs485, Wsoic-16 | Newark Electronics
RS422/485 TRANSCEIVER, 500KBPS, WSOIC-16 | element14

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Is the MAX14946EWE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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