Dual-channel digital isolator 2DIB1411F in DSO-8 narrow body package Infineon’s ISOFACE™ dual-channel digital isolator 2DIB1411F (with 1 forward channel and 1 reverse channel) provides robust isolation for high voltage applications. With a wide supply voltage range, TTL input thresholds and default output state high, it is the perfect fit for bus communication with logic high in idle conditions.