The 66056 single and dual channel optocouplers consist of LED's optically coupled to two high speed, high gain inverting detector gates. Maximum isolation can be achieved while providing TTL outputs capable of switching with propagation delays of 55ns typical. The 66056 is available in military temperature range and military temperature with 100% device screening. The devices are built in eight-pin dual-in-line, hermetically sealed packages and provide high input to output DC isolation.