ADUM3151ARSZ from Analog Devices, in a SSOP-20-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	VDD1	power_in	Power supply for Side 1; a bypass capacitor from VDD1 to GND1 to local ground is required.
2	GND1	power_in	Ground 1, the ground reference for isolator Side 1.
3	MCLK	input	SPI clock from the main controller.
4	MO	input	SPI data from the main MO/SI line.
5	MI	output	SPI data from the subordinate to the main MI/SO line.
6	MSS	input	Subordinate select from the main, active low logic; requires a 10 ns setup time from the next clock or data edge.
7	VIA	input	Low speed data input A.
8	VIB	input	Low speed data input B.
9	VOC	output	Low speed data output C.
10	GND1	power_in	Ground 1, the ground reference for isolator Side 1.
11	GND2	power_in	Ground 2, the ground reference for isolator Side 2.
12	VIC	input	Low speed data input C.
13	VOB	output	Low speed data output B.
14	VOA	output	Low speed data output A.
15	SSS	output	Subordinate select to the subordinate, active low logic.
16	SO	input	SPI data from the subordinate to the main MI/SO line.
17	SI	output	SPI data from the main to the subordinate MO/SI line.
18	SCLK	output	SPI clock from the main controller.
19	GND2	power_in	Ground 2, the ground reference for isolator Side 2.
20	VDD2	power_in	Power supply for Side 2; a bypass capacitor from VDD2 to GND2 to local ground is required.

Key specifications

Parameter	Value
Manufacturer	Analog Devices
Package	SSOP-20-208mil
Category	Interface ICs
Pins	20

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
SPI Clock Rate	SPIMCLK			1	MHz	A grade, 5 V operation	3
Data Rate Fast (MO, SO)	DRFAST			34	Mbps	Within PWD limit, 5 V operation	3
Propagation Delay MCLK/MO/SO	tPHL, tPLH			25	ns	50% input to 50% output, 5 V operation	3
Propagation Delay MSS	tPHL, tPLH			25	ns	50% input to 50% output, 5 V operation	3
Pulse Width Distortion	PWD			3	ns	/tPLH − tPHL/, 5 V operation, MCLK/MO/SO	3
Codirectional Channel Matching	tPSKCD			3	ns	5 V operation, MCLK/MO/SO	3
Jitter, High Speed	JHS			1	ns	5 V operation, MCLK/MO/SO	3
Propagation Delay VIA, VIB, VIC	tPHL, tPLH	0.1		2.6	µs	50% input to 50% output, 5 V operation	3
Jitter, Low Speed	JLS			2.5	µs	5 V operation, VIA, VIB, VIC	3
VIx Minimum Input Skew	tVIx SKEW			10	ns	5 V operation, VIA, VIB, VIC	3
Supply Current, 1 MHz A Grade, ADuM3151 IDD1	IDD1	4	8.5	14	mA	1 MHz, A grade; CL = 0 pF, low speed channels; 5 V operation	3
Supply Current, 1 MHz A Grade, ADuM3151 IDD2	IDD2	6	10.5	13.5	mA	1 MHz, A grade; CL = 0 pF, low speed channels; 5 V operation	3
Input Current per Channel	II	-1	0.01	1	µA	0 V ≤ VINPUT ≤ VDDx; 5 V operation	4
Logic Low Output Voltage	VOL	0		0.1	V	IOUTPUT = 20 µA, VINPUT = VIL; 5 V operation	4
Logic Low Output Voltage	VOL	0.2		0.4	V	IOUTPUT = 4 mA, VINPUT = VIL; 5 V operation	4
Common-Mode Transient Immunity	/CM/	25	35		kV/µs	VINPUT = VDDx, VCM = 1000 V, transient magnitude = 800 V; 5 V operation	4
Output Rise/Fall Time	tR/tF			2.5	ns	10% to 90%; 5 V operation	4
SPI Clock Rate	SPIMCLK			1	MHz	A grade, 3.3 V operation	4
Propagation Delay MCLK/MO/SO	tPHL, tPLH			30	ns	50% input to 50% output, 3.3 V operation	4
Propagation Delay MSS	tPHL, tPLH			30	ns	50% input to 50% output, 3.3 V operation	4
Propagation Delay VIA, VIB, VIC	tPHL, tPLH	0.1		2.6	µs	50% input to 50% output, 3.3 V operation	5
Supply Current, 1 MHz A Grade, ADuM3151 IDD1	IDD1	2.8	6.5	10.5	mA	1 MHz, A grade; CL = 0 pF, low speed channels; 3.3 V operation	5
Supply Current, 1 MHz A Grade, ADuM3151 IDD2	IDD2	4.6	8	9	mA	1 MHz, A grade; CL = 0 pF, low speed channels; 3.3 V operation	5
Logic Low Output Voltage	VOL	0		0.1	V	IOUTPUT = 20 µA, VINPUT = VIL; 3.3 V operation	6
Logic Low Output Voltage	VOL	0.2		0.4	V	IOUTPUT = 4 mA, VINPUT = VIL; 3.3 V operation	6
Common-Mode Transient Immunity	/CM/	25	35		kV/µs	VINPUT = VDDx, VCM = 1000 V, transient magnitude = 800 V; 3.3 V operation	6
Propagation Delay MCLK/MO/SO	tPHL, tPLH			27	ns	50% input to 50% output, mixed 5 V/3.3 V operation	6
Propagation Delay MSS	tPHL, tPLH			27	ns	50% input to 50% output, mixed 5 V/3.3 V operation	6
Supply Current, 1 MHz A Grade, ADuM3151 IDD1	IDD1	4	8.5	13.9	mA	1 MHz, A grade; CL = 0 pF, low speed channels; mixed 5 V/3.3 V operation	7
Supply Current, 1 MHz A Grade, ADuM3151 IDD2	IDD2	4.6	8	9	mA	1 MHz, A grade; CL = 0 pF, low speed channels; mixed 5 V/3.3 V operation	7
Common-Mode Transient Immunity	/CM/	25	35		kV/µs	VINPUT = VDDX, VCM = 1000 V, transient magnitude = 800 V; mixed 5 V/3.3 V operation	7
Propagation Delay MCLK/MO/SO	tPHL, tPLH			27	ns	50% input to 50% output, mixed 3.3 V/5 V operation	8
Propagation Delay MSS	tPHL, tPLH			27	ns	50% input to 50% output, mixed 3.3 V/5 V operation	8
Supply Current, 1 MHz A Grade, ADuM3151 IDD1	IDD1	2.8	6.5	10.5	mA	1 MHz, A grade; CL = 0 pF, low speed channels; mixed 3.3 V/5 V operation	8
Supply Current, 1 MHz A Grade, ADuM3151 IDD2	IDD2	6	10.5	13	mA	1 MHz, A grade; CL = 0 pF, low speed channels; mixed 3.3 V/5 V operation	8
Input Current per Channel	II	-1	0.01	1	µA	0 V ≤ VINPUT ≤ VDDx; mixed 3.3 V/5 V operation	9
Operating Temperature Range	TA	-40		125	°C		11
Supply Voltage Range	VDD1, VDD2	3		5.5	V		11
Input Signal Rise and Fall Times				1	ms		11
Storage Temperature Range	TST	-65		150	°C		12
Ambient Operating Temperature Range	TA	-40		125	°C		12
Supply Voltages	VDD1, VDD2	-0.5		7	V		12
Average Current per Output Pin		-10		10	mA		12
Common-Mode Transients		-100		100	kV/µs	Refers to common-mode transients across the insulation barrier	12
IC Junction to Case Thermal Resistance	θJC		75		°C/W	Thermocouple located at center of package underside	9

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
housing	pC		In accordance with DIN EN IEC 60747-17 (VDE 0884-17), each model is proof tested by applying an insulation test voltage ≥ 1059 V peak for 1 second (partial discharge detection limit = 5 pC).	9

CAD (KiCad official)

Symbol: ADUM3151ARSZ
Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
3D model: SSOP-20-208mil (KiCad packages3D, STEP)
3D model files: adum3151arsz-etched.step / adum3151arsz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adum3151arsz.step / adum3151arsz.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Analog Devices datasheet (21 pp, sha256 6f3bafe860033f24, retrieved 2026-10-30, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

ADUM3151ARSZ

Verified ADUM3151ARSZ

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3D Model

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