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ADUM1241ARSZ

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Analog Devices Digital Isolators, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentcommunication interface chip-uart-485-232adum1241arszfactory-2.0.0extractor-text

Verified ADUM1241ARSZ

by Ray · last 2 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

2 Nov 2026RayPublished by the parts factory: tier mfr, 20 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ADUM1241ARSZ · SSOP-20-208mil · 20 pins
  • ✓copper: 20 copper pads, none touching another net
  • ✓datasheet: all 20 pin names found in the 23-page datasheet
  • ✓distributor: lcsc C660284, digikey 505-ADUM1241ARSZ-ND, mouser 584-ADUM1241ARSZ
  • ✓family: SSOP-20_5.3x7.2mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-zf7b8w62/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 20 pins = 20 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 20 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ adum1241arsz.kicad_sym✓ adum1241arsz.kicad_mod✓ adum1241arsz.step
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docs Publish 0.1.0 · Ray 1d ago
viewers adum1241arsz: viewers · Ray 1d ago
adum1241arsz-etched.glb Publish 0.1.0 · Ray 1d ago
adum1241arsz-etched.step adum1241arsz: factory component page (tier=mfr) · Ray 1d ago
adum1241arsz-hero.glb adum1241arsz: hero GLB from the etched model (keeps the MPN mark) · Ray 1d ago
adum1241arsz-hero.overlay.json Publish 0.1.0 · Ray 1d ago
adum1241arsz.glb Publish 0.1.0 · Ray 1d ago
adum1241arsz.kicad_mod Publish 0.1.0 · Ray 1d ago
adum1241arsz.kicad_sym Publish 0.1.0 · Ray 1d ago
adum1241arsz.lbr Publish 0.1.0 · Ray 1d ago
adum1241arsz.step Publish 0.1.0 · Ray 1d ago
package.json Publish 0.1.0 · Ray 1d ago
page.json Set visibility: public · Ray 1d ago
README.md Publish 0.1.0 · Ray 1d ago
verification.json Verified: Published by the parts factory: tier mfr, 20 pins · Ray 1d ago

ADUM1241ARSZ

Analog Devices · Digital Isolators · SSOP-20-208mil

ADUM1241ARSZ 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 Supply voltage for isolator Side 1 (2.25 V to 3.6 V); connect a ceramic bypass capacitor of 0.01 µF to 0.1 µF between VDD1 and GND1.
2 GND1 power_in Ground reference for isolator Side 1; pin 2 and pin 10 are internally connected, and connecting both to GND1 is recommended.
3 NIC unconnected Not internally connected; leave this pin floating.
4 NIC unconnected Not internally connected; leave this pin floating.
5 VOA output Logic Output A.
6 VIB input Logic Input B.
7 EN1 input Refresh and watchdog enable 1; connecting to GND1 enables input/output refresh and watchdog for Side 1, while tying to VDD1 disables them for lowest power operation, and EN1 and EN2 must be set to the same logic state.
8 NIC unconnected Not internally connected; leave this pin floating.
9 NIC unconnected Not internally connected; leave this pin floating.
10 GND1 power_in Ground reference for isolator Side 1; pin 2 and pin 10 are internally connected, and connecting both to GND1 is recommended.
11 GND2 power_in Ground reference for isolator Side 2; pin 11 and pin 19 are internally connected, and connecting both to GND2 is recommended.
12 NIC unconnected Not internally connected; leave this pin floating.
13 NIC unconnected Not internally connected; leave this pin floating.
14 EN2 input Refresh and watchdog enable 2; connecting to GND2 enables input/output refresh and watchdog for Side 2, while tying to VDD2 disables them for lowest power operation, and EN1 and EN2 must be set to the same logic state.
15 VOB output Logic Output B.
16 VIA input Logic Input A.
17 NIC unconnected Not internally connected; leave this pin floating.
18 NIC unconnected Not internally connected; leave this pin floating.
19 GND2 power_in Ground reference for isolator Side 2; pin 11 and pin 19 are internally connected, and connecting both to GND2 is recommended.
20 VDD2 power_in Supply voltage for isolator Side 2 (2.25 V to 3.6 V); connect a ceramic bypass capacitor of 0.01 µF to 0.1 µF between VDD2 and GND2.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package SSOP-20-208mil
Category Communication Interface Chip/UART/485/232
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
Propagation Delay tPHL, tPLH 80 180 ns 50% input to 50% output 4
Change vs. Temperature (propagation delay) 200 ps/°C 4
Minimum Pulse Width PW 500 ns Within PWD limit 4
Pulse Width Distortion PWD 8 ns /tPLH − tPHL/ 4
Propagation Delay Skew tPSK 10 ns 4
Channel Matching Codirectional tPSKCD 10 ns 4
Channel Matching Opposing Direction tPSKOD 15 ns 4
Supply Current ADuM1241/ADuM1246 side 1 IDD1 306 450 µA 2 Mbps, no load 4
Supply Current ADuM1241/ADuM1246 side 2 IDD2 306 450 µA 2 Mbps, no load 4
Positive Threshold Voltage VT+ 1.8 V 4
Negative Going Threshold Voltage VT− 1.2 V 4
Input Hysteresis ΔVT 0.6 V 4
Undervoltage Lockout, VDD1 or VDD2 UVLO 1.5 V 4
Input Current per Channel II -1 0.01 1 µA 0 V ≤ VIx ≤ VDDx1 4
Quiescent Input Supply Current IDDI (Q) 4.8 10 µA ENX low 4
Quiescent Output Supply Current IDDO (Q) 0.8 6 µA ENX low 4
Quiescent Input Supply Current (Refresh Off) IDDI (Q) 0.12 µA ENX high 5
Quiescent Output Supply Current (Refresh Off) IDDO (Q) 0.13 µA ENX high 5
Dynamic Input Supply Current IDDI (D) 88 µA/Mbps 5
Dynamic Output Supply Current IDDO (D) 60 µA/Mbps 5
Output Rise Time/Fall Time tR/tF 2 ns 10% to 90% 5
Common-Mode Transient Immunity /CM/ 25 40 kV/µs VIx = VDDx1, VCM = 1000 V, transient magnitude = 800 V 5
Refresh Rate fr 14 kbps 5
Propagation Delay 2.5 V tPHL, tPLH 112 180 ns 50% input to 50% output 5
Change vs. Temperature (propagation delay 2.5 V) 280 ps/°C 5
Pulse Width Distortion 2.5 V PWD 12 ns /tPLH − tPHL/ 5
Minimum Pulse Width 2.5 V PW 500 ns Within PWD limit 5
Propagation Delay Skew 2.5 V tPSK 10 ns 5
Channel Matching Codirectional 2.5 V tPSKCD 10 ns 5
Channel Matching Opposing Direction 2.5 V tPSKOD 30 ns 5
Supply Current ADuM1241/ADuM1246 side 1 at 2.5 V IDD1 240 375 µA 2 Mbps, no load 5
Supply Current ADuM1241/ADuM1246 side 2 at 2.5 V IDD2 240 375 µA 2 Mbps, no load 5
Input Current per Channel 2.5 V II -1 0.01 1 µA 0 V ≤ VIx ≤ VDDx1 6
Positive Threshold Voltage 2.5 V VT+ 1.5 V 6
Negative Going Threshold Voltage 2.5 V VT− 1 V 6
Input Hysteresis 2.5 V ΔVT 0.5 V 6
Undervoltage Lockout 2.5 V UVLO 1.5 V 6
Quiescent Input Supply Current 2.5 V IDDI (Q) 2.6 3.75 µA ENX low 6
Quiescent Output Supply Current 2.5 V IDDO (Q) 0.5 3.75 µA ENX low 6
Quiescent Input Supply Current (Refresh Off) 2.5 V IDDI (Q) 0.05 µA ENX high 6
Quiescent Output Supply Current (Refresh Off) 2.5 V IDDO (Q) 0.05 µA ENX high 6
Dynamic Input Supply Current 2.5 V IDDI (D) 76 µA/Mbps 6
Dynamic Output Supply Current 2.5 V IDDO (D) 41 µA/Mbps 6
Output Rise Time/Fall Time 2.5 V tR/tF 2 ns 10% to 90% 6
Common-Mode Transient Immunity 2.5 V /CM/ 25 40 kV/µs VIx = VDDx1, VCM = 1000 V, transient magnitude = 800 V 6
Refresh Rate 2.5 V fr 14 kbps 6
Propagation Delay Side 1 to Side 2 (VDD1 3.3 V, VDD2 2.5 V) tPHL, tPLH 84 180 ns 50% input to 50% output 7
Propagation Delay Side 2 to Side 1 (VDD1 3.3 V, VDD2 2.5 V) tPHL, tPLH 120 180 ns 50% input to 50% output 7
Pulse Width Distortion (VDD1 3.3 V, VDD2 2.5 V) PWD 12 ns /tPLH − tPHL/ 7
Supply Current ADuM1241 side 1 (VDD1 3.3 V, VDD2 2.5 V) IDD1 306 400 µA 2 Mbps, no load 7
Supply Current ADuM1241 side 2 (VDD1 3.3 V, VDD2 2.5 V) IDD2 240 375 µA 2 Mbps, no load 7
Propagation Delay Side 1 to Side 2 (VDD1 2.5 V, VDD2 3.3 V) tPHL, tPLH 120 180 ns 50% input to 50% output 7
Propagation Delay Side 2 to Side 1 (VDD1 2.5 V, VDD2 3.3 V) tPHL, tPLH 84 180 ns 50% input to 50% output 7
Supply Current ADuM1241 side 1 (VDD1 2.5 V, VDD2 3.3 V) IDD1 240 375 µA 2 Mbps, no load 8
Supply Current ADuM1241 side 2 (VDD1 2.5 V, VDD2 3.3 V) IDD2 306 450 µA 2 Mbps, no load 8
Operating Temperature TA -40 125 °C 11
Supply Voltages VDD1, VDD2 2.25 3.6 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 5 V 12
Average Output Current per Pin Side 1 IO1 -10 10 mA 12
Average Output Current per Pin Side 2 IO2 -10 10 mA 12
Common-Mode Transients -100 100 kV/µs Refers to common-mode transients across the insulation barrier 12

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 ADuM1240/ADuM1241/ADuM1245/ADuM1246 is proof tested by applying an insulation test voltage ≥1050 V peak for 1 second (partial discharge detec 8

CAD (KiCad official)

  • Symbol: ADUM1241ARSZ
  • Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
  • 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
  • 3D model files: adum1241arsz-etched.step / adum1241arsz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adum1241arsz.step / adum1241arsz.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (23 pp, sha256 45fcde7a76f1bf6b, retrieved 2026-11-02, 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