4000 series cmos logic family texas instruments cd4051be this ti cd4051b analog multiplexerdemultiplexer ic is available in a dil 16 package a part of the cmos 4000 range the 4051 features a low on resistance 125omega and a high off resistance plusmn100pa leakage current the 4051 contains 1 x 8 channel muxdemux texas instruments cd4051be analogue multiplexer demultiplexer