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ADUM1285BRZ

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Analog Devices Digital Isolators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ADUM1285BRZ

Analog Devices · Digital Isolators · SOIC-8

ADUM1285BRZ from Analog Devices, in a SOIC-8. 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 Supply voltage for isolator side 1, specified at 3.135 V to 5.5 V.
2 VIA input Logic input A on side 1 of the isolation barrier.
3 VIB input Logic input B on side 1 of the isolation barrier.
4 GND1 power_in Ground reference for isolator side 1.
5 GND2 power_in Ground reference for isolator side 2.
6 VOB output Logic output B on side 2 of the isolation barrier.
7 VOA output Logic output A on side 2 of the isolation barrier.
8 VDD2 power_in Supply voltage for isolator side 2, specified at 3.135 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package SOIC-8
Category Communication Interface Chip/UART/485/232
Pins 8

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Operating Temperature TA -40 125 °C 10
Supply Voltages VDD1, VDD2 (A, B, and C Grades) VDD1, VDD2 3.135 5.5 V A, B, and C Grades 10
Input Signal Rise and Fall Times 1 ms 10
Storage Temperature TST -65 150 °C 11
Ambient Operating Temperature TA -40 125 °C 11
Supply Voltages VDD1, VDD2 -0.5 7 V 11
Input Voltages VIA, VIB -0.5 V Maximum printed as VDDI + 0.5 V 11
Output Voltages VOA, VOB -0.5 V Maximum printed as VDD2 + 0.5 V 11
Average Output Current per Pin Side 1 IO1 -10 10 mA 11
Average Output Current per Pin Side 2 IO2 -10 10 mA 11
Common-Mode Transients -100 100 kV/μs 11
Pulse Width (5 V operation) PW 40 ns Within PWD limit 3
Data Rate (5 V operation) 25 Mbps Within PWD limit 3
Propagation Delay (5 V operation) tPHL, tPLH 35 ns 50% input to 50% output 3
Pulse Width Distortion (5 V operation) PWD 3 ns /tPLH − tPHL/ 3
Pulse Width Distortion Change vs. Temperature (5 V operation) 3 ps/°C 3
Propagation Delay Skew (5 V operation) tPSK 12 ns Between any two units at same operating conditions 3
Channel Matching Codirectional (5 V operation) tPSKCD 3 ns 3
Channel Matching Opposing-Direction (5 V operation) tPSKOD 6 ns 3
Jitter (5 V operation) 2 ns 3
Supply Current IDD1 ADuM1285 (5 V operation) IDD1 1.1 1.6 mA No load; 1 Mbps 3
Supply Current IDD1 ADuM1285 (5 V operation) IDD1 6.2 7 mA No load; 25 Mbps 3
Supply Current IDD2 ADuM1285 (5 V operation) IDD2 2.7 4.5 mA No load; 1 Mbps 3
Supply Current IDD2 ADuM1285 (5 V operation) IDD2 4.8 7 mA No load; 25 Mbps 3
Logic Low Output Voltage (5 V operation) VOL 0 0.1 V IOx = 20 µA, VIx = VIxL 3
Logic Low Output Voltage (5 V operation) VOL 0.2 0.4 V IOx = 3.2 mA, VIx = VIxL 3
Input Current per Channel (5 V operation) II -10 0.01 10 µA 0 V ≤ VIx ≤ VDDx 3
Quiescent Input Supply Current (5 V operation) IDDI(Q) 0.54 0.8 mA 3
Quiescent Output Supply Current (5 V operation) IDDO(Q) 1.6 2 mA 3
Common-Mode Transient Immunity (5 V operation) /CM/ 25 35 kV/µs VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V 4
Pulse Width (3.3 V operation) PW 40 ns Within PWD limit 4
Data Rate (3.3 V operation) 25 Mbps Within PWD limit 4
Propagation Delay (3.3 V operation) tPHL, tPLH 35 ns 50% input to 50% output 4
Pulse Width Distortion (3.3 V operation) PWD 3 ns /tPLH − tPHL/ 4
Pulse Width Distortion Change vs. Temperature (3.3 V operation) 3 ps/°C 4
Propagation Delay Skew (3.3 V operation) tPSK 16 ns Between any two units at same operating conditions 4
Channel Matching Codirectional (3.3 V operation) tPSKCD 3 ns 4
Channel Matching Opposing-Direction (3.3 V operation) tPSKOD 6 ns 4
Jitter (3.3 V operation) 2 ns 4
Supply Current IDD1 ADuM1285 (3.3 V operation) IDD1 0.75 1.4 mA No load; 1 Mbps 4
Supply Current IDD1 ADuM1285 (3.3 V operation) IDD1 5.1 9 mA No load; 25 Mbps 4
Supply Current IDD2 ADuM1285 (3.3 V operation) IDD2 2 3.5 mA No load; 1 Mbps 4
Supply Current IDD2 ADuM1285 (3.3 V operation) IDD2 2.7 4.6 mA No load; 25 Mbps 4
Logic Low Output Voltage (3.3 V operation) VOL 0 0.1 V IOx = 20 µA, VIx = VIxL 5
Logic Low Output Voltage (3.3 V operation) VOL 0.2 0.4 V IOx = 3.2 mA, VIx = VIxL 5
Input Current per Channel (3.3 V operation) II -10 0.01 10 µA 0 V ≤ VIx ≤ VDDx 5
Quiescent Input Supply Current (3.3 V operation) IDDI(Q) 0.4 0.6 mA 5
Quiescent Output Supply Current (3.3 V operation) IDDO(Q) 1.2 1.7 mA 5
Common-Mode Transient Immunity (3.3 V operation) /CM/ 25 35 kV/µs VIx = VDDx, VCM = 1000 V, transient magnitude = 800 V 5
Supply Current IDD1 ADuM1285 (mixed 5 V/3.3 V) IDD1 1.1 1.6 mA No load; 1 Mbps 6
Supply Current IDD1 ADuM1285 (mixed 5 V/3.3 V) IDD1 6.2 7 mA No load; 25 Mbps 6
Supply Current IDD2 ADuM1285 (mixed 5 V/3.3 V) IDD2 2 3.5 mA No load; 1 Mbps 6
Supply Current IDD2 ADuM1285 (mixed 5 V/3.3 V) IDD2 2.7 4.6 mA No load; 25 Mbps 6
Supply Current IDD1 ADuM1285 (mixed 3.3 V/5 V) IDD1 0.75 1.4 mA No load; 1 Mbps 7
Supply Current IDD1 ADuM1285 (mixed 3.3 V/5 V) IDD1 5.1 9 mA No load; 25 Mbps 7
Supply Current IDD2 ADuM1285 (mixed 3.3 V/5 V) IDD2 2.7 4.5 mA No load; 1 Mbps 7
Supply Current IDD2 ADuM1285 (mixed 3.3 V/5 V) IDD2 4.8 7 mA No load; 25 Mbps 7
Thermal Resistance Junction-to-Ambient θJA 85 °C/W Thermocouple located at center of package underside 8

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 ADuM1280/ADuM1281/ADuM1285/ADuM1286 is proof tested by applying an insulation test voltage ≥ 1050 VPEAK for 1 second (partial discharge detec 8

CAD (KiCad official)

  • Symbol: ADUM1285BRZ
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: adum1285brz-etched.step / adum1285brz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adum1285brz.step / adum1285brz.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (18 pp, sha256 9143762bd346e43a, retrieved 2026-10-29, 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