MUX50x Precision Analog Multiplexers Texas Instruments MUX50x Precision Analog Multiplexers are modern complementary metal-oxide-semiconductor (CMOS) analog multiplexers (muxes). The MUX508 offers 8:1 single-ended channels, whereas, the MUX509 offers differential 4:1 (8:2) channels. The Texas Instruments MUX508 and MUX509 work equally well with dual supplies (±5V to ±18V) or a single supply (10V to 36V). These devices also perform well with symmetric supplies (such as VDD = 12V, VSS = –12V), and unsymmetric supplies (such as VDD = 12V, VSS = –5V). All digital inputs have TTL-logic compatible thresholds, ensuring TTL and CMOS logic compatibility when operating in the valid supply voltage range.