The IH6208 is a CMOS 2 of 8 multiplexer. The part is a plug-in replacement for the DG509A. Two-line binary decoding is used so that the 8 channels can be controlled in pairs by the binary inputs; additionally a third input is provided for use as a system enable. When the ENABLE input is high (5V), the channels are sequenced by the 2 line binary inputs, and when low (0V) all channels are off. The 2 Address inputs arecontrolled by TTL logic or CMOS logic elements with a "0" corresponding to any voltage less than 0.8V and a "1" corresponding to any voltage greater than 2.4V. Note that the ENABLE input must be taken to 5V to enable the system, and less than 0.8V to disable the system.