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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftmux7309f”>View Datasheet
Texas Instruments TMUX7308F/TMUX7309F Analog Multiplexers are complementary metal-oxide semiconductor (CMOS) analog multiplexers in 8:1 (single-ended) and 4:1 (differential) configurations. The devices work well with a single supply (8V to 44V), dual supplies (±5V to ±22V), or asymmetric supplies (such as VDD = 12V, VSS = –5V). The overvoltage protection is available in powered and powered-off conditions, making the TMUX7308F and TMUX7309F devices suitable for applications where power supply sequencing is not precisely controlled.
The device blocks fault voltage up to +60V or –60V relative to ground in both powered and powered-off conditions. When no power supplies are present, the switch channels remain in the OFF state regardless of switch input conditions and logic control status. Under normal operation conditions, if the analog input signal level on any Sx pin exceeds the supply voltage (VDD or VSS) by a threshold voltage (VT), the channel turns OFF, and the Sx pin becomes high impedance. When the fault channel is selected, the drain pin (D or Dx) is pulled to the exceeded supply (VDD or VSS).
Low capacitance, integrated fault protection, and low charge injection enable the TMUX7308F and TMUX7309F devices to be used in front-end data acquisition applications where high performance and high robustness are critical. The Texas Instruments TMUX7308F/TMUX7309F are available in a standard TSSOP package and a smaller WQFN package (ideal if PCB space is limited).
