The CD4085BF is an 8-bit buffer/line driver made by RCA. It is an integrated circuit that is used to buffer, or isolate, an electronic signal between two stages of a circuit, while maintaining signal integrity. The device has eight inputs and eight outputs, so it can be used to send a signal from one circuit to eight different circuits. It is also used to level shift logic levels for compatibility. The CD4085BF is a CMOS device, so it requires low power, has low frequency and has very low signal loss.