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ISOW7721
  • ISOW7721
  • ISOW7721

ISOW7721

ACTIVE

Low emissions, dual-channel, 1/1, reinforced digital isolator with integrated power

Texas Instruments ISOW7721 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Isolation rating

Reinforced

Number of channels

2

Forward/reverse channels

1 forward / 1 reverse

Data rate (max) (Mbps)

100

Working isolation voltage (VIOWM) (Vrms)

1000

Surge isolation voltage (VIOSM) (VPK)

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

Digital isolator

Package

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

Features

  • 100 Mbps data rate
  • Integrated DC-DC converter with low-emissions, low-noise
    • Emissions optimized to meet CISPR 32 and EN 55032 Class B with >5 dB margin on 2 layer board
    • Low frequency power converter at 25 MHz enabling low noise performance
    • Low output ripple: 24 mV
  • High efficiency output power
    • Efficiency at max load: 46%
    • Up to 0.55-W output power
    • VISOOUT accuracy of ± 5%
    • 5 V to 5 V: Max available load current = 110 mA
    • 5 V to 3.3 V: Max available load current = 140 mA
    • 3.3 V to 3.3 V: Max available load current = 60 mA
  • Support for multi-ISOW7721 chain to increase system power output to > 1-W and > 200 mA
  • Independent power supply for channel isolator & power converter
    • Logic supply (VIO): 1.71-V to 5.5-V
    • Power converter supply (VDD): 3-V to 5.5-V
  • Robust electromagnetic compatibility (EMC)
    • System-level ESD, EFT, and surge immunity
    • ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
  • Reinforced and Basic isolation options
  • High CMTI: 100-kV/µs (typical)
  • 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
  • Extended temperature range: –40°C to +125°C
  • 20-pin wide body SOIC package
  • 100 Mbps data rate
  • Integrated DC-DC converter with low-emissions, low-noise
    • Emissions optimized to meet CISPR 32 and EN 55032 Class B with >5 dB margin on 2 layer board
    • Low frequency power converter at 25 MHz enabling low noise performance
    • Low output ripple: 24 mV
  • High efficiency output power
    • Efficiency at max load: 46%
    • Up to 0.55-W output power
    • VISOOUT accuracy of ± 5%
    • 5 V to 5 V: Max available load current = 110 mA
    • 5 V to 3.3 V: Max available load current = 140 mA
    • 3.3 V to 3.3 V: Max available load current = 60 mA
  • Support for multi-ISOW7721 chain to increase system power output to > 1-W and > 200 mA
  • Independent power supply for channel isolator & power converter
    • Logic supply (VIO): 1.71-V to 5.5-V
    • Power converter supply (VDD): 3-V to 5.5-V
  • Robust electromagnetic compatibility (EMC)
    • System-level ESD, EFT, and surge immunity
    • ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
  • Reinforced and Basic isolation options
  • High CMTI: 100-kV/µs (typical)
  • 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
  • Extended temperature range: –40°C to +125°C
  • 20-pin wide body SOIC package

Description

The ISOW7721 device is a galvanically-isolated dual-channel digital isolator with an integrated high-efficiency power converter with low emissions. The integrated DC-DC converter provides up to 550 mW of isolated power, eliminating the need for a separate isolated power supply in space-constrained isolation designs. If additional power is needed, the ISOW7721 supports multi-device chaining, increasing the integrated power output to > 1 W using two devices in a system.

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