ADM2484E Series

5 kV Signal Isolated, ESD Protected, 500 kbps, Full/Half Duplex RS-485 Transceiver

Catalog

5 kV Signal Isolated, ESD Protected, 500 kbps, Full/Half Duplex RS-485 Transceiver

Part	Supplier Device Package	Rise / Fall Time (Typ) [custom]	Rise / Fall Time (Typ) [custom]	Common Mode Transient Immunity (Min) [Min]	Type	Inputs - Side 1/Side 2 [custom]	Inputs - Side 1/Side 2 [custom]	Channel Type	Package / Case [x]	Package / Case	Package / Case [y]	Number of Channels [custom]	Mounting Type	Data Rate	Voltage - Supply	Isolated Power	Technology	Operating Temperature [Max]	Operating Temperature [Min]
Analog Devices ADM2484EBRWZ	16-SOIC	450 ns	450 ns	25 kV/µs	RS422 RS485	2	1	Unidirectional	0.295 in	16-SOIC	7.5 mm	3	Surface Mount	500 kbps	3.3 V 5 V		Magnetic Coupling	85 °C	-40 °C

Catalog

5 kV Signal Isolated, ESD Protected, 500 kbps, Full/Half Duplex RS-485 Transceiver

Key Features

• Isolated, RS-485/RS-422 transceiver, configurable as half- or full-duplex

• ±15 kV ESD protection on RS-485 input/output pins

• 500 kbps data rate

• Complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482: 1987(E)

• Suitable for 5 V or 3.3 V operation (VDD1)

• High common-mode transient immunity: >25 kV/μs

• True fail-safe receiver inputs

• 256 nodes on the bus

• Thermal shutdown protection

• Safety and regulatory approvalsUL recognition5000 V rms isolation voltage for 1 minute per UL1577VDE certificate of conformityDIN V VDE V 0884-10 (VDE V 0884-10): 2006-12Reinforced insulation, VIORM= 849 VPEAKCSA Component Acceptance Notice 5AIEC 60950-1: 380 V rms (reinforced)

• UL recognition5000 V rms isolation voltage for 1 minute per UL1577

• 5000 V rms isolation voltage for 1 minute per UL1577

• VDE certificate of conformityDIN V VDE V 0884-10 (VDE V 0884-10): 2006-12Reinforced insulation, VIORM= 849 VPEAK

• DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12

• Reinforced insulation, VIORM= 849 VPEAK

• CSA Component Acceptance Notice 5AIEC 60950-1: 380 V rms (reinforced)

• IEC 60950-1: 380 V rms (reinforced)

• Operating temperature range: −40°C to +85°C

• Wide body, 16-lead SOIC package

Description

The ADM2484E is an isolated data transceiver with ±15 kV ESD protection suitable for high speed, half- or full-duplex communication on multipoint transmission lines. For half-duplex operation, the transmitter outputs and receiver inputs share the same transmission line. Transmitter Output Pin Y links externally to Receiver Input Pin A, and Transmitter Output Pin Z links externally to Receiver Input Pin B.Designed for balanced transmission lines, the ADM2484E complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482: 1987(E). The device employs Analog Devices, Inc.,iCoupler®technology to combine a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package.The differential transmitter outputs and receiver inputs feature electrostatic discharge circuitry that provides protection up to ±15 kV using the human body model (HBM). The logic side of the device can be powered with either a 5 V or a 3.3 V supply, whereas the bus side requires an isolated 3.3 V supply.The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention causes excessive power dissipation.ApplicationsIsolated RS-485/RS-422 interfacesIndustrial field networksINTERBUSMultipoint data transmission systems