High Speed CMOS R²Coupler with AEC-Q100 Grade 1 Qualification

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The ACPL-K71T and ACPL-K72T are high speed digital CMOS optocouplers  in packages suitable for emerging electric vehicle applications. The ACPL-K74T and ACPL-K75T are dual channel equivalent of the ACPL-K71T and ACPL-K72T respectively. All products are available in the stretched SO-8 package outline, designed to be compatible with surface mount processes.

ACPL-K71T and ACPL-K74T feature high speed mode with fastest propagation delay (max. 35ns at IF = 10mA) while ACPL-K72T and ACPL-K75T are low power mode with lowest LED drive current of 4mA for standard digital isolation switching.

Each channel of the digital optocoupler has a CMOS detector IC with an integrated photodiode, a high speed trans-impedance amplifier, and a voltage comparator with an output driver.

Avago R2Coupler provides with reinforced insulation and reliability that delivers safe signal isolation critical in automotive and high temperature industrial applications.


  • Qualified to AEC-Q100 Grade 1 test guidelines
  • Wide automotive temperature range: –40oC to 125oC
  • 5 V CMOS compatible
  • 40kV/µs Common-Mode Rejection at VCM=1000V 
  • Low propagation delay :
    • ACPL-K71T, ACPL-K74T: 25ns @ IF=10mA (Typical)
    • ACPL-K72T, ACPL-K75T: 60ns @ IF=4mA (Typical) 
  • Worldwide safety approval:
    - UL 1577 recognized, 5000 VRMS / 1 min
    - CSA approved
    - IEC/EN/DIN EN 60747-5-5 


  • Automotive CANBus and SPI Communications Interface
  • Automotive Power Transitor Isolation 
  • High Temperature Digital Signal Isolation
  • Automotive IPM Driver for DC/DC Converters and Motor Inverters
  • Digital isolation for A/D and D/A conversion

Lifecycle Status



  • RoHS
    Pb & Pb-free options available

Lifecycle Status


Substance Compliance

  • RoHS
    Pb & Pb-free options available
Specification Value
Lifecycle Active
Distrib. Inventory Yes
Samples Available Yes
IF Min. (mA) 3.5
RoHS6 Compliant Pb & Pb-free options available
Max Qty of Samples 20
Product Type High Speed CMOS Logic Gate
Package Stretched SO8
Operating Temperature Range -40°C to 125°C
AECQ100 Grade 1 Yes
CTR Max. (%) N.A.
CTR Min. (%) N.A.
PWD (max.) 50
Tpsk Max In Ns 60
CMR (min.) (V/µs) 25000.0
Vcm (V) 1000.0
UL Insulation Rating Viso (VRMS) 5000.0
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 1140.0


Data Sheet (1) i
Options Data Sheet (2) i
Reliability Data Sheet (2) i
White Papers (1) i

Optional Products


Low Power R2Coupler with AEC-Q100 Grade 1 Qualification


High Speed CMOS R2Coupler with AEC-Q100 Grade 1 Qualification


High Speed CMOS R²Coupler with AEC-Q100 Grade 1 Qualification


High Speed CMOS R²Coupler with AEC-Q100 Grade 1 Qualification


High Speed CMOS R²Coupler with AEC-Q100 Grade 1 Qualification