The HCPL-6630 from Broadcom is a Space Qualified Optocoupler with Forward Voltage 1.5 to 1.85 V, Power Consumption 40 to 200 mW, Capacitance 1 to 4 pF, Common Mode Transient Immunity 1000 to 10000 V/us, Propagation Delay 55 to 140 nS. Tags: Surface Mount. More details for HCPL-6630 can be seen below.