MAX14948 Series

5kVRMSIsolated 500kbps Half-Duplex RS-485/RS-422 Transceiver with ±30kV ESD Protection

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

5kVRMSIsolated 500kbps Half-Duplex RS-485/RS-422 Transceiver with ±30kV ESD Protection

Part	Operating Temperature (Min)	Operating Temperature (Max)	Package Name	Number of Channels	Propagation Delay tpHL (Max)	Propagation Delay tpLH (Max)	Type	Isolated Power	Mounting Type	Common Mode Transient Immunity (Typ)	Voltage - Supply (Range 1 Maximum)	Voltage - Supply (Range 2 Minimum)	Voltage - Supply (Range 2 Maximum)	Voltage - Supply (Range 1 Minimum)	Technology	Inputs - Side 1	Inputs - Side 2	Voltage - Isolation	Data Rate	Channel Type	Package Length	Package Width	Rise / Fall Time (Max)	Rise / Fall Time (Typ)
Analog Devices Inc./Maxim Integrated MAX14948EWE+T	-40 °C	85 °C	16-SOIC	3	1.04 µs	1.04 µs	RS422 RS485	No	Surface Mount	35 kV/µs	5.5 V	4.5 V	5.5 V	1.71 V	Capacitive Coupling	2	1	5000 Vrms	500 kbps	Unidirectional	0.295 in	7.5 mm	900 ns	900 ns
Analog Devices Inc./Maxim Integrated MAX14948EWE+	-40 °C	85 °C	16-SOIC	3	1.04 µs	1.04 µs	RS422 RS485	No	Surface Mount	35 kV/µs	5.5 V	4.5 V	5.5 V	1.71 V	Capacitive Coupling	2	1	5000 Vrms	500 kbps	Unidirectional	0.295 in	7.5 mm	900 ns	900 ns

Catalog

5kVRMSIsolated 500kbps Half-Duplex RS-485/RS-422 Transceiver with ±30kV ESD Protection

Description

The MAX14948 isolated RS-485/RS-422 transceiver provides 5000VRMS(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 MAX14948 includes one half-duplex drive/receive 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 MAX14948 is available in a wide body 16-pin SO package and operates over the -40°C to +85°C temperature range.ApplicationsHVACIndustrial Automation EquipmentPower MetersProgrammable Logic Controllers