The 40-670A series of very high density multiplexer modules feature a wide range of switching configurations. Typical applications include signal routing in ATE and data acquisition systems. The 40-670 multiplexer may be operated as a conventional multiplexer with break-before-make action when a new channel is selected.In addition multiple channels may be simultaneously selected (not available in 1 pole mode). Note: The 40-670 is available. However, it should only be considered for legacy requirements as the 40-670A has better performance characteristics when used with twisted pair cabling. It should be noted that the 40-670 and 40-670A are not pin-to-pin compatible.