High Speed LVTTL Compatible 3.3/5 Volt Optocouplers

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The ACPL-W60L/K63L optocouplers are optically coupled gates that combine a GaAsP light emitting diode and an integrated high gain photo detector. The output of the detector IC is an open collector Schottky-clamped transistor. The internal shield provides a guaranteed common mode transient immunity specification of 15 kV/μs at 3.3V.

This unique design provides maximum AC and DC circuit isolation while achieving LVTTL/LVCMOS compatibility. The optocoupler AC and DC operational parameters are guaranteed from –40˚C to 100˚C allowing trouble-free system performance.



  • Dual Voltage Operation (3.3V/5V)
  • Low power consumption
  • 15 kV/s minimum Common Mode Rejection (CMR) at Vcm=1000V
  • High speed: 15 MBd typical
  • LVTTL/LVCMOS compatible
  • Low input current capability: 5 mA
  • Guaranteed AC and DC performance over temperature: 
    –40˚C to 100˚C
  • Available in 6-pin stretched SO-6 and 8 pin stretched SO-8
  • Safety approvals: UL, CSA, IEC/EN/DIN EN 60747-5-5


  • Isolated line receiver
  • Computer-peripheral interfaces
  • Microprocessor system interfaces
  • Digital isolation for A/D, D/A conversion
  • Switching power supply
  • Instrument input/output isolation
  • Ground loop elimination
  • Pulse transformer replacement
  • Fieldbus

Lifecycle Status


Substance Compliance

  • RoHS
    Pb & Pb-free options available
Specification Value
Lifecycle Active
Distrib. Inventory Yes
RoHS6 Compliant Pb & Pb-free options available
Product Type 10 MBd Logic Gate
Package Stretched SO6
VDD (V) 3.3/5
IF Min. (mA) 5.0
Prop Delay (tPLH) Max. (µs) 90.0
Prop Delay (tPHL) Max. (µs) 75.0
CMR (min.) (V/µs) 15000.0
Vcm (V) 1000.0
UL Insulation Rating Viso (VRMS) 5000.0
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 1140
Application Note3 i
Brochures1 i
Data Sheet1 i
Options Data Sheet6 i
Product Change Notice (PCN)12 i
Promotional Material2 i
Regulatory Certificate3 i
Reliability Data Sheet3 i
Selection Guide2 i
Technical Notes1 i
White Papers2 i
FAQs1 i