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Analog Devices MAX12931BASA+ — Digital Isolators
Analog Devices

MAX12931BASA+ Digital Isolator, 2-Ch, 25Mbps, 3750Vrms

MPNMAX12931BASA+
End of Life

Maxim Integrated MAX12931BASA+ general-purpose digital isolator, 2 unidirectional channels, capacitive coupling, 25Mbps data rate, 3750Vrms isolation, 1.71V–5.5V supply, -40°C to 125°C, 8-SOIC package, Tube.

$4.12Ref. price · indicative, final on quote
MAX12931BASA+ 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

MAX12931BASA+ Technical Specifications
ParameterValue
TypeGeneral Purpose
Channel typeUnidirectional
Mounting typeSurface Mount
Voltage1.71V ~ 5.5V
Voltage - isolation3750Vrms
Isolated powerNo
Operating temperature-40°C ~ 125°C
Pulse width distortion4ns
PackageTube
Data rate25Mbps
TechnologyCapacitive Coupling
Case8-SOIC (0.154\", 3.90mm Width)
Number of channels2
Inputs - side 1/Side 21/1
Rise (Fall time)1.6ns, 1.4ns (Max)
Propagation delay tpLH (tpHL)32.5ns, 33.6ns
Common mode transient immunity50kV/µs (Typ)

Product details

General-purpose digital isolator for noisy environments

The Maxim Integrated MAX12931BASA+ is a two-channel, unidirectional digital isolator using capacitive coupling to pass signals across a 3750Vrms isolation barrier. It handles data rates up to 25Mbps.

What the key ratings mean for your BOM

The 3750Vrms isolation voltage is the primary safety spec. The 25Mbps data rate is adequate for most sensor and control links.

Temperature grade and deployment environment

Rated for -40°C to 125°C, this part fits industrial automation cabinets, outdoor telecom enclosures, and under-hood automotive modules. The capacitive coupling technology has no LED wear-out mechanism, so it holds up over temperature cycling better than optocoupler-based isolators. The 8-SOIC package is a standard footprint — no special layout beyond the usual 8mm creepage clearance for 3750Vrms.

Frequently asked questions

What are the alternatives to MAX12931BASA+?

The closest pin-compatible alternative in the same family is the MAX12931EASA+, which offers 150Mbps data rate in the same 8-SOIC footprint. For a lower data rate, the MAX12930BASA+ is a single-channel variant.

What is MAX12931BASA+'s listed type?

It is listed as a General Purpose digital isolator, meaning it is not optimized for a specific protocol like I²C or RS-485 — it works for any unidirectional logic signal.