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Analog Devices LTM2881IV-3#PBF — Digital Isolators

LTM2881IV-3#PBF RS422/RS485 Isolator, 2500Vrms, 20Mbps

MPNLTM2881IV-3#PBF
End of Life

Linear Technology µModule® LTM2881IV-3#PBF, RS422/RS485 digital isolator, 2500Vrms isolation, 20Mbps data rate, 3V–3.6V supply, 32-BLGA package, -40°C to 85°C.

$22.88Ref. price · indicative, final on quote
Packaging32-BLGA
RoHSROHS3 Compliant
SeriesµModule®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LTM2881IV-3#PBF specifications
ParameterValue
TypeRS422, RS485
SeriesµModule®
Channel typeUnidirectional
MountingSurface Mount
Supply voltage3V ~ 3.6V
Voltage - isolation2500Vrms
Isolated powerYes
Operating temperature-40°C ~ 85°C
PackageTray
Data rate20Mbps
TechnologyMagnetic Coupling
Case32-BLGA
Channels2
Inputs - side 1/Side 21/1
Common mode transient immunity30kV/µs

Product details

Integrated isolation for RS422/RS485 links

The LTM2881IV-3#PBF is a µModule digital isolator from Linear Technology that integrates a complete RS422/RS485 transceiver with 2500Vrms galvanic isolation and an isolated DC-DC converter in a single 32-LGA package.

Housed in a 32-BLGA (15x11.25mm) surface-mount package, the LTM2881IV-3#PBF requires a standard reflow profile compatible with lead-free solder. No external heatsink is needed if the board has adequate copper area.

The µModule family includes pin-compatible variants with different isolation ratings and supply options.

Frequently asked questions

Does LTM2881IV-3#PBF support RS422 or RS485?

Yes, the LTM2881IV-3#PBF is a combined RS422 and RS485 transceiver with integrated isolation.

Does LTM2881IV-3#PBF require external components for isolated power?

No, the LTM2881IV-3#PBF integrates an isolated DC-DC converter, so no external isolated power supply is needed. Only standard decoupling capacitors are required.