Many integrated circuit manufactures supply transceiver technologies that are designed primarily for backplanes with specific parameters in mind. One device technology might focus on low power consumption and another on high speed. There are also technologies that try to offer a complete solution by addressing each and every backplane issue. A large part of backplane design is focused on which device technology best suits the design. This section serves as a guide to choosing among the following backplane transceiver technologies: transistor-transistor logic (TTL)-based, differential technologies, and Gunning Transceiver Logic Plus (GTLP).