The ADuM2250/ADuM2251^* are hot swappable digital isolators with nonlatching bidirectional communication channels and are compatible with I²C interfaces. This eliminates the need for splitting I²C signals into separate transmit and receive signals for use with stand-alone optocouplers.

The ADuM2250 provides two bidirectional channels supporting a complete isolated I²C interface. The ADuM2251 provides one bidirectional channel and one unidirectional channel for those applications where a bidirectional clock is not required.

The ADuM2250/ADuM2251 contain hot swap circuitry to prevent data glitches when an unpowered card is inserted onto an active bus.

These isolators are based on iCoupler® chip-scale transformer technology from Analog Devices, Inc. iCoupler is a magnetic isolation technology with functional, performance, size, and power consumption advantages compared to optocouplers. The ADuM2250/ADuM2251 integrate iCoupler channels with semiconductor circuitry to enable a complete, isolated I²C interface provided in a small form-factor.

^* Protected by U.S. Patents 5,952,849; 6,873,065 and 7,075,329; other patents pending

Applications

• Isolated I²C, SMbus, or PMBus Interfaces
• Multilevel I²C interfaces
• Power supplies
• Networking
• Power-over-Ethernet

Part#	Features	# Ch	Max Data Rate(Mbps)	Resolution (Bits)	Insulation Rating (kVrms)	Max Operating Temp (°C)	Pulse Width Distort (ns)	Max Prop Delay (ns)	Min Output Voltage (V)	Max Output Voltage (V)	Output Default State	Serial Clock	Package	Price* (1000-4999)
AD7400	Isolated Sigma-Delta Modulator	-	10	16	-	-	-	-	-	-	-	-	16-Lead SOIC	$4.00
AD7401	Isolated Sigma-Delta Modulator	-	10	16	-	-	-	-	-	-	-	-	16-Lead SOIC	$4.00
ADM2483	RS-485 Transceiver/Half Duplex	1	0.5	-	2.5	85	-	-	1.5	5	Z	-	16-Lead SOIC	$3.00
ADM2485	RS-485 Transeiver	1	16	-	2.5	85	-	-	2.1	5	Z	-	16-Lead SOIC	$5.50
ADM2486	RS-485 Transceiver/Half Duplex w/ Transformer Driver	1	20	-	2.5	85	-	-	-	-	Z	-	16-Lead SOIC	$4.98
ADM2490E	RS-485 Transceiver/Full Duplex	1	16	-	5	105	-	-	-	-	High	-	16-Lead SOIC	$4.50
ADUM1100	Standard Digital Isolator	1	100	-	2.5	125	2	18	3	5.5	High	-	8-Lead SOIC	$1.61
ADUM1200	Standard Digital Isolator	2	25	-	2.5	105	3	45	2.7	5.5	High	-	8-Lead SOIC	$1.21
ADUM1201	Standard Digital Isolator	2	25	-	2.5	105	3	45	2.7	5.5	High	-	8-Lead SOIC	$1.21
ADUM1210	Standard Digital Isolator	2	10	-	2.5	105	3	50	2.7	5.5	Low	-	8-Lead SOIC	$1.76
ADUM1230	Isolated Gate Drivers	2	10	-	2.5	105	8	160	12	18	Low	-	16-Lead SOIC	-
ADUM1233	Isolated Gate Drivers	2	10	-	2.5	105	-	160	12	18	Low	-	16-Lead SOIC	$1.56
ADUM1234	Isolated Gate Driver	2	-	-	2.5	-	-	160	12	18	Low	-	16-Lead SOIC	$1.56
ADUM1250	I2C Compliant Bidirectional Digital Isolator	1	1	-	2.5	105	67	150	-	-	High	Bidirectional	8-Lead SOIC	$3.38
ADUM1251	I2C Compliant Bidirectional Digital Isolator	1	1000	-	2.5	105	67	150	-	-	High	Unidirectional	8-Lead SOIC	$3.05
ADUM1300	Standard Digital Isolator	3	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$1.61
ADUM1301	Standard Digital Isolator	3	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$1.61
ADUM1310	Standard Digital Isolator	3	10	-	2.5	105	5	50	2.7	5.5	High	-	16-Lead SOIC	$1.61
ADUM1400	Standard Digital Isolator	4	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1401	Standard Digital Isolator	4	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1402	Standard Digital Isolator	4	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1410	Standard Digital Isolator	4	10	-	2.5	105	5	50	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1411	Standard Digital Isolator	4	10	-	2.5	105	5	50	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1412	Standard Digital Isolator	4	10	-	2.5	105	5	50	2.7	5.5	High	-	16-Lead SOIC	$2.15
ADUM1420	Isolated Gate Driver	4	10	-	1.6	105	-	160	12	18	Low	-	-	$2.30
ADUM2200	Standard Digital Isolator	2	1	-	5	105	-	150	2.7	5.5	High	-	16-Lead SOIC	$1.64
ADUM2250	I2C Compliant Bidirectional Digital Isolator	2	1	-	5	105	-	-	-	-	High	Bidirectional	16-Lead SOIC	$3.99
ADUM2251	I2C Compliant Bidirectional Digital Isolator	2	1	-	5	105	-	-	-	-	High	Unidirectional	16-Lead SOIC	$3.59
ADUM2400	Standard Digital Isolator	4	90	-	5	105	3	32	2.7	5.5	High	-	16-Lead SOIC	$3.16
ADUM2401	Standard Digital Isolator	4	90	-	5	105	3	32	2.7	5.5	High	-	16-Lead SOIC	$3.16
ADUM2402	Standard Digital Isolator	4	90	-	5	105	3	32	2.7	5.5	High	-	16-Lead SOIC	$3.16
ADUM3100	Ruggedized for System Level ESD	1	100	-	2.5	105	2	18	3	5.5	High	-	8-Lead SOIC	$1.69
ADUM3200	Ruggedized for System-Level ESD	2	25	-	2.5	105	3	45	2.7	5.5	High	-	8-Lead SOIC	$1.27
ADUM3201	Ruggedized for System-Level ESD	1	25	-	2.5	85	3	45	2.7	5.5	High	-	8-Lead SOIC	$1.27
ADUM3300	Ruggedized for System-Level ESD	-	90	-	2.5	105	2	32	2.7	5.5	High	-	16-Lead SOIC	$1.69
ADUM3301	Ruggedized for System-Level ESD	3	90	-	2.5	105	-	32	2.7	5.5	High	-	16-Lead SOIC	$1.69
ADUM3400	Ruggedized for System-Level ESD	4	90	-	2.5	105	-	32	2.7	5.5	High	-	16-Lead SOIC	$2.25
ADUM3401	Ruggerdized for System-Level ESD	-	90	-	2.5	105	-	32	2.7	5.5	High	-	16-Lead SOIC	$2.25
ADUM3402	Ruggedized for System-Level ESD	4	90	-	2.5	105	-	32	2.7	5.5	High	-	16-Lead SOIC	$2.25
ADUM3440	Standard Digital Isolator	4	150	-	2.5	105	5	32	3	5.5	High	-	16-Lead SOIC	$5.41
ADUM3441	Standard Digital Isolator	4	150	-	2.5	105	5	32	3	5.5	High	-	16-Lead SOIC	$5.41
ADUM3442	Standard Digital Isolator	4	150	-	2.5	105	5	32	3	5.5	High	-	16-Lead SOIC	$5.41
ADUM5230	Isolated Gate Driver	1	-	-	2.5	105	-	100	12	18	Low	-	16-Lead SOIC	$2.24
ADUM5240	Power Integrated Isolated Power	2	1	-	2.5	105	-	70	4.5	5.5	Low	-	8-Lead SOIC	$2.95
ADUM5241	Power Integrated Isolated Power	2	1	-	2.5	105	-	70	4.5	5.5	Low	-	8-Lead SOIC	$2.95
ADUM5242	Power Integrated Isolated Power	2	1	-	2.5	105	-	70	4.5	5.5	Low	-	8-Lead SOIC	$2.95
ADUM5401	Digital Isolator with isoPower	4	25	-	2.5	105	-	60	3	5.5	Low	-	16-Lead SOIC	$5.00
ADUM5402	Digital Isolator with isoPower	4	25	-	2.5	105	-	60	3	5.5	Low	-	16-Lead SOIC	$5.00
ADUM5403	Digital Isolator with isoPower	4	25	-	2.5	105	-	60	3	5.5	Low	-	16-Lead SOIC	$5.00
ADUM5404	Digital Isolator with isoPower	4	25	-	2.5	105	-	60	3	5.5	Low	-	16-Lead SOIC	$5.00

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
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• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

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For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

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• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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