The Broadcom ACPL-227 is a DC-input dual-channel half-pitch phototransistor optocoupler that contains two light-emitting diodes optically coupled to two separate phototransistors. It is packaged in an 8-pin SO package. 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.

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 (type) 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