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ISOW1044
  • ISOW1044
  • ISOW1044

ISOW1044

ACTIVE

Low emissions, 5-kVrms isolated CAN FD transceiver with integrated DC/DC power

Texas Instruments ISOW1044 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Isolation rating

Basic

Number of channels

1

Data rate (max) (Mbps)

5

Working isolation voltage (VIOWM) (Vrms)

1000

Surge isolation voltage (VIOSM) (VPK)

6250, 7800, 10000

Transient isolation voltage (VIOTM) (VPK)

7071

Withstand isolation voltage (VISO) (Vrms)

5000

CMTI (min) (kV/µs)

85

Operating temperature range (°C)

-40 to 125

Type

CAN

Package

SOIC (DFM)-20-132.149 mm² 12.83 x 10.3

Features

  • Meets the requirements of ISO 11898-2:2016 physical layer standards

    • Support of Classical CAN: 1 Mbps

    • Optimized for CAN FD: 2 and 5 Mbps
  • Integrated DC-DC converter with low-emissions, low-noise
    • Meets CISPR 32 and EN 55032 Class B with greater than 6 dB margin on a two-layer PCB
    • Low frequency power converter at 25 MHz enabling low noise performance
  • Additional 10 Mbps GPIO channel
  • High efficiency output power
    • Typical efficiency: 47%
    • Isolated output voltage accuracy: ± 5%
    • Additional output current: 20 mA
  • Independent power supply for CAN & DC-DC
    • Logic supply (V IO): 1.71 V to 5.5 V
    • Power converter supply ( V DD): 4.5 V to 5.5 V
  • Fault-Protected CAN FD Transceiver
    • DC Bus fault protection voltage: ± 58V
    • Receiver common mode input voltage: ±12 V
    • Remote wakeup via BUS wake-up pattern
  • Typical loop delay: 167 ns
  • Reinforced and Basic isolation options
  • High CMTI: 100-kV/µs (typical)
  • High ESD bus protection w.r.t GND2
    • HBM ESD: ±12 kV
    • IEC 61000-4-2 contact discharge: ±8 kV
  • Operating temperature range: -40°C to 125°C
  • Current limit and thermal shutdown
  • 20-pin wide SOIC package
  • Safety-Related Certifications planned:
    • VDE Reinforced and Basic insulation per DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certifications
  • Meets the requirements of ISO 11898-2:2016 physical layer standards

    • Support of Classical CAN: 1 Mbps

    • Optimized for CAN FD: 2 and 5 Mbps
  • Integrated DC-DC converter with low-emissions, low-noise
    • Meets CISPR 32 and EN 55032 Class B with greater than 6 dB margin on a two-layer PCB
    • Low frequency power converter at 25 MHz enabling low noise performance
  • Additional 10 Mbps GPIO channel
  • High efficiency output power
    • Typical efficiency: 47%
    • Isolated output voltage accuracy: ± 5%
    • Additional output current: 20 mA
  • Independent power supply for CAN & DC-DC
    • Logic supply (V IO): 1.71 V to 5.5 V
    • Power converter supply ( V DD): 4.5 V to 5.5 V
  • Fault-Protected CAN FD Transceiver
    • DC Bus fault protection voltage: ± 58V
    • Receiver common mode input voltage: ±12 V
    • Remote wakeup via BUS wake-up pattern
  • Typical loop delay: 167 ns
  • Reinforced and Basic isolation options
  • High CMTI: 100-kV/µs (typical)
  • High ESD bus protection w.r.t GND2
    • HBM ESD: ±12 kV
    • IEC 61000-4-2 contact discharge: ±8 kV
  • Operating temperature range: -40°C to 125°C
  • Current limit and thermal shutdown
  • 20-pin wide SOIC package
  • Safety-Related Certifications planned:
    • VDE Reinforced and Basic insulation per DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certifications

Description

The ISOW1044 device is a galvanically-isolated controller area network (CAN) transceiver with a built-in isolated DC-DC converter that eliminates the need for a separate isolated power supply in space-constrained isolated designs. The low-emissions, isolated DC-DC meets CISPR 32 radiated emissions Class B standard with just two ferrite beads on a simple two-layer PCB. Additional 20 mA output current can be used to power other circuits on the board. An integrated 10 Mbps GPIO channel is available and can help remove an additional digital isolator or optocoupler for diagnotstics, LED indication or supply monitoring.

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