DC-Input, Multi-channel half-pitch phototransistor optocouplers

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The ACPL-227-500E is a DC-input dual channel half-pitch transistor optocoupler which contains two light emitting diodes optically coupled to two separate phototransistors.

Likewise, the ACPL-247 is a DC-input quad channel half-pitch phototransistor optocoupler which contains four light emitting diodes optically coupled to four separate phototransistors.

For both devices, the input-output isolation voltage is rated at 3,000 VRMS. Response time, tr, is 2μs typically. Minimum CTR at IF 5mA, is 50% for ACPL-227, and 100% for ACPL-247.



  • Current transfer ratio (CTR: 50% (min) at IF = 5mA, VCE = 5V)
  • High input-output isolation voltage (VISO = 3,000VRMS)
  • Non-saturated Response time (tr: 2μs (typ) at VCC = 10V, IC = 2mA, RL= 100Ω)
  • SO package
  • CMR 10kV/μs (typical)
  • Safety and regulatory approvals 
    • UL
    • CSA
    • IEC/EN/DIN EN 60747-5-2
  • Options available:
    • CTR Rank 0, B & C for ACPL-227 and Rank 0 only for ACPL-247


  • I/O Interface for Programmable controllers, computers.
  • Sequence controllers
  • System appliances, measuring instruments
  • Signal transmission between circuits of different potentials and impedances.

Lifecycle Status


Substance Compliance

  • RoHS
    Pb-free options
Specification Value
Lifecycle Active
Distrib. Inventory Yes
Absolute Max. If (mA) 50
BVCEO (V) 80
CTR Max. (%) 600
CTR Min. (%) 50.0
RoHS6 Compliant Pb-free options only
Package SO8
UL Insulation Rating Viso (VRMS) 3000.0
VCE(SAT) max (V) 0.4
Vf max (V) 1.3
Application Brief1 i
Application Note2 i
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Data Sheet1 i
Design Guide1 i
Options Data Sheet3 i
Regulatory Certificate1 i
Selection Guide2 i
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