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Analog Devices ADUM1281CRZ-RL7 — Digital Isolators
Analog Devices

ADUM1281CRZ-RL7 Digital Isolator, 100 Mbps, 3000 Vrms

MPNADUM1281CRZ-RL7
End of Life

Analog Devices ADUM1281CRZ-RL7, iCoupler series, digital isolator, 2 channels, unidirectional, 100 Mbps data rate, 3000 Vrms isolation, 8-SOIC package, -40 to 125°C.

$4.47Ref. price · indicative, final on quote
ADUM1281CRZ-RL7 datasheet
Packaging8-SOIC (0.154", 3.90mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

ADUM1281CRZ-RL7 Technical Specifications
ParameterValue
TypeGeneral Purpose
SeriesiCoupler®
Channel typeUnidirectional
Mounting typeSurface Mount
Voltage3V ~ 5.5V
Voltage - isolation3000Vrms
Isolated powerNo
Operating temperature-40°C ~ 125°C
Pulse width distortion2ns
PackageTape & Reel (TR); Cut Tape (CT)
Data rate100Mbps
TechnologyMagnetic Coupling
Case8-SOIC (0.154\", 3.90mm Width)
Number of channels2
Inputs - side 1/Side 21/1
Rise (Fall time)2.5ns, 2.5ns
Propagation delay tpLH (tpHL)24ns, 24ns
Common mode transient immunity25kV/µs

Product details

Two-channel digital isolator for industrial and automotive signal isolation

The Analog Devices ADUM1281CRZ-RL7 is a two-channel digital isolator from the iCoupler family, using magnetic coupling to provide 3000 Vrms galvanic isolation for general-purpose signal paths.

The 100 Mbps data rate covers most industrial fieldbus and sensor interfaces without timing margin issues; propagation delay is 24 ns max per channel, with pulse-width distortion held to 2 ns. The 3000 Vrms isolation rating is tested per basic insulation requirements for equipment rated up to 300 Vrms working voltage in overvoltage category II. Common-mode transient immunity is specified at 25 kV/µs minimum, which keeps the output clean during motor-drive switching or relay contact bounce.

Frequently asked questions

What is the data rate and isolation voltage of ADUM1281CRZ-RL7?

It supports 100 Mbps data rate with 3000 Vrms isolation, making it suitable for isolating high-speed digital signals across a safety barrier.

Is ADUM1281CRZ-RL7 RoHS compliant?

Yes, it is ROHS3 compliant per the manufacturer's listing.

ADUM1281CRZ-RL7 vs ADUM1281BRZ — what are the differences?

The ADUM1281CRZ-RL7 is the higher-speed variant rated at 100 Mbps, whereas the ADUM1281BRZ is typically rated at 25 Mbps. Both share the same 2-channel unidirectional architecture, 3000 Vrms isolation, and 8-SOIC package. The C-grade is the one to pick when the bus needs the full 100 Mbps throughput.

Is ADUM1281CRZ-RL7 unidirectional or bidirectional?

It is unidirectional, with one input on side 1 and one output on side 2 per channel (1/1 configuration).