Low Power 5MBd Digital Optocouplers

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The ACPL-M21L (single channel SO-5 package) is the first industrial 5MBd low power digital optocoupler. The detector has CMOS output stage and optical receiver input stages with built-in Schmitt triggers to provide logic-compatible waveforms, eliminating the need for additional waveshaping. The optocoupler consumes extremely low power, at maximum 1.1mA IDD current per channel across temperature. With a forward LED current as low as 1.6 mA, most microprocessors can directly drive the LED.

A superior internal shield on the ACPL-M21L guarantees common mode transient immunity of 25 kV/µs at a common mode voltage of 1000 V over a temperature range of -40 °C to 105°C. Glitches free output upon power-up and power-down of optocoupler.

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  • 5 Mbd Typical Signal Rate
  • CMOS output
  • Low Supply Current, IDD < 1.1mA max
  • Low LED Input Drive Current, IF at 1.6mA min
  • Low Supply Voltage range, 2.7 - 5.5Volts
  • Hysteresis 0.2mA typical
  • High CMR (min. 25kV/us@VCM=1kV)
  • SO5 Package
  • 250 ns maximum Propagation Delay Guaranteed over the Full Temperature Range
  • Guaranteed Industrial Temperature Performance from -40 oC to 105oC
  • Safety Approval :
    • IEC/EN 60747-5-5, IEC/EN/DIN EN 60747-5-2 Approval for Reinforced Insulation
    • UL 1577 Recognized - 3750 V rms for 1 minute
    • CSA Approved
  • Options available are:
    • 060 = IEC/EN 60747-5-5 , IEC/EN/DIN EN 60747-5-2 VIORM = 560  VPEAK
    • 500 = Tape and Reel Packaging Option
    • XXXE = Lead Free Option


  • Industrial Networking/IOs
  • Isolation of High Speed Logic Systems
  • Microprocessor System Interfaces
  • Ground Loop Elimination
  • Pulse Transformer Replacement
  • High Speed Line Receiver
  • Computer-Peripheral Interfaces
  • Power Control Systems

Lifecycle Status


Substance Compliance

  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Active
Distrib. Inventory Yes
Vcm (V) 1000.0
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 560.0
IF Min. (mA) 1.6
Input Current Ma Uom mA
RoHS6 Compliant Y
Package SO5
Product Type 5 MBd Logic Gate
UL Insulation Rating Viso (VRMS) 3750.0
VDD2 (V) 2.7-5.5
Prop Delay (tPHL) Max. (µs) 0.25
Prop Delay (tPLH) Max. (µs) 0.25
IF Min. (mA) 1.6 mA
Application Note4 i
Data Sheet1 i
Options Data Sheet3 i
Product Change Notice (PCN)1 i
Regulatory Certificate2 i
Selection Guide1 i
White Papers2 i
FAQs1 i
Promotional Material1 i