ADUM1255ASA+ – Analog Devices I²C Isolator with Unidirectional SCL, Idle-Bus Hotswap and Low VOL

ADUM1255ASA+ is an I²C Isolator with Unidirectional SCL, Idle-Bus Hotswap and Low VOL from Analog Devices in SOIC-8. Voltage – Supply: 2.25V~5.5V; CMTI(kV/us): 100kV/us; Isolation Voltage(Vrms): 3000; Peak Output Current(sink): 5mA;50mA. Verify pull-up resistors and bus capacitance against the required I²C clock rate.

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Analog Devices

Analog Devices is a global semiconductor company focused on bridging physical and digital systems at the intelligent edge. The company’s product and technology scope includes analog and mixed-signal ICs, power management, RF products, converters, amplifiers, sensors, isolation, interface devices and edge-processing solutions. These technologies are used across industrial automation, automotive, communications, instrumentation, energy, healthcare, aerospace and consumer systems, with manufacturer-controlled documentation and product resources supporting engineering selection and design.

For component buyers and engineers, Analog Devices is relevant because its portfolio spans distinct device families and package or performance options that should be selected by exact manufacturer part number rather than by a generic family label. Electrical limits, interface requirements, package, qualification, lifecycle and ordering suffixes can vary between related devices, so the exact orderable code remains the primary identity for BOM control and substitution review.

HKEQGOO groups Analog Devices electronic components by exact manufacturer part number so customers can review the specific device, package and application fit required for a BOM. Brand-level information provides context only; availability, lifecycle, date code, compliance, inspection requirements and engineering substitution suitability should be confirmed for the exact part number involved in each quotation.

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Procurement Snapshot

Procurement Field Value
Exact MPN ADUM1255ASA+
Manufacturer Analog Devices
Package SOIC-8
Availability Contact for current stock and lead time
Datasheet Verified PDF

Key Selection Information

Selection Parameter Confirmed Information
Voltage – Supply 2.25V~5.5V
CMTI(kV/us) 100kV/us
Isolation Voltage(Vrms) 3000
Peak Output Current(sink) 5mA;50mA
Clock Direction Unidirectional
Features Open-drain buffer output; Multi-voltage domain interface; Hotswap
Operating Temperature -40℃~+125℃
Manufacturer-confirmed feature Bidirectional I²C data transfer up to 2 MHz SCL

Product Overview

ADUM1255ASA+ is an I²C Isolator with Unidirectional SCL, Idle-Bus Hotswap and Low VOL from Analog Devices. The exact order code is preserved for BOM, RFQ and incoming-inspection control. The verified package for this listing is SOIC-8. Engineering selection should be based on the exact manufacturer part number, interface requirements, isolation needs and package.

ADUM1255ASA+ Analog Devices product image

Application Fit

  • Isolated I²C/SMBus control links
  • Hot-swappable isolated sensor and peripheral buses
  • Mixed-voltage industrial control interfaces

Design Considerations

  • Verify pull-up resistors and bus capacitance against the required I²C clock rate.
  • Confirm VDD1/VDD2 logic domains and SCL direction match the target bus architecture.
  • Maintain isolation creepage/clearance and follow the manufacturer layout guidance.

Alternative Candidates

MPN Manufacturer Package
CMT8101WH HopeRF Micro-electronics SOW-8WB
CA-IS3021S Chipanalog SOIC-8

These candidates are listed by LCSC. Verify electrical characteristics, pinout, package, qualification and application requirements before substitution.

Quality & RFQ Support

For quotation or inspection requirements, provide the exact MPN, quantity, destination, target Date Code if applicable, and any requested third-party testing before shipment.

Package

SOIC-8