Current transfer ratio ( CTR : MIN. 50% at IF = 5mA, VCE = 5V ) High input-output isolation voltage ( Viso = 5,000Vrms ) Response time ( tr : TYP. 4µs at VCE = 2V, IC = 2mA, RL = 100Ω ) Dual-in-line package : LTV-817 : 1-channel type LTV-827 : 2-channel type LTV-847 : 4-channel type Wide lead spacin.