ADM2486 Series

2.5 kV Signal Isolated, High Speed (20 Mbps), Half Duplex RS-485 Transceiver

Catalog

2.5 kV Signal Isolated, High Speed (20 Mbps), Half Duplex RS-485 Transceiver

Part	Data Rate	Common Mode Transient Immunity (Min) [Min]	Type	Technology	Propagation Delay tpLH / tpHL (Max) [custom]	Propagation Delay tpLH / tpHL (Max) [custom]	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case [x]	Package / Case	Package / Case [y]	Isolated Power	Supplier Device Package	Number of Channels [custom]	Mounting Type	Inputs - Side 1/Side 2 [custom]	Inputs - Side 1/Side 2 [custom]	Voltage - Isolation	Voltage - Supply	Pulse Width Distortion (Max)	Channel Type
Analog Devices ADM2486BRWZ-REEL	20 Mbps	25 kV/µs	RS422 RS485	Magnetic Coupling	55 ns	55 ns	85 °C	-40 °C	0.295 in	16-SOIC	7.5 mm		16-SOIC	3	Surface Mount	2	1	2500 Vrms	3 V 5 V	5 ns	Bidirectional
Analog Devices ADM2486BRWZ	20 Mbps	25 kV/µs	RS422 RS485	Magnetic Coupling	55 ns	55 ns	85 °C	-40 °C	0.295 in	16-SOIC	7.5 mm		16-SOIC	3	Surface Mount	2	1	2500 Vrms	3 V 5 V	5 ns	Bidirectional

Catalog

2.5 kV Signal Isolated, High Speed (20 Mbps), Half Duplex RS-485 Transceiver

Key Features

• Half-duplex, isolated RS-485 transceiver

• PROFIBUS®compliant

• ANSI EIA/TIA 485-A and ISO 8482: 1987(E) compliant

• 20 Mbps data rate

• 5 V or 3 V operation (VDD1)

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

• Isolated DE status output

• Receiver open-circuit, fail-safe design

• Thermal shutdown protection

• 50 nodes on bus

• Safety and regulatory approvalsUL recognition—2500 Vrmsfor 1 minute per UL 1577CSA Component Acceptance Notice #5AIEC 609501 800 Vrms(basic), 400 Vrms(reinforced)VDE Certificate of ConformityDIN V VDE 0884-10 (VDE V 0884-10): 2006-12

• UL recognition—2500 Vrmsfor 1 minute per UL 1577

• CSA Component Acceptance Notice #5AIEC 609501 800 Vrms(basic), 400 Vrms(reinforced)

• IEC 609501 800 Vrms(basic), 400 Vrms(reinforced)

• VDE Certificate of ConformityDIN V VDE 0884-10 (VDE V 0884-10): 2006-12

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

• VIORM= 560 V peak

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

• Wide body, 16-lead SOIC package

Description

The ADM2486 differential bus transceiver is an integrated, galvanically isolated component designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and complies with ANSI EIA/TIA-485-A and ISO 8482: 1987(E).The device employs Analog DevicesiCoupler®technology to combine a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package. The logic side of the device is powered with either a 5 V or a 3 V supply, and the bus side uses an isolated 5 V supply.The ADM2486 driver has an active-high enable feature. The driver differential outputs and the receiver differential inputs are connected internally to form a differential input/output port that imposes minimal loading on the bus when the driver is disabled or when VDD1 or VDD2 = 0 V. Also provided is an active-high receiver disable feature that causes the receive output to enter a high impedance state.The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention may cause excessive power dissipation. The part is fully specified over the industrial temperature range and is available in a 16-lead, wide body SOIC package.ApplicationsIsolated RS-485/RS-422 interfacesPROFIBUS networksIndustrial field networksMultipoint data transmission systems