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Frequent questions

  • [FAQ] What is shoot-through current in an analog multiplexer and how to avoid it

    Part Number: TMUX1574 Tool/software: Shoot-through current occurs when CMOS inputs are somewhere between their High and Low voltages, effectively turning on both MOSFETs in the CMOS structure. In many devices, including analog multiplexers, this creates…

  • [FAQ] TMUX1308-Q1: Fail-safe operation

    Part Number: TMUX1308-Q1 Tool/software: Hi Experts, ' Is there any guidelines to follow regarding the input when the TMUX is not powered. Can i apply input voltage when the supply is not available. Thank you for the guidance. Regards, Sreenivasa …

  • [FAQ] Load Timing consideration Mux specification

    Part Number: TMUX1574 Tool/software: Highlighting how RC loads impact our timing measurements: The presence of resistive and capacitive loads influences how quickly muxes can switch signals and how accurately they handle high frequency signals. RC loads…

  • [FAQ] Which Device Do I Choose If I Need Powered-Off Protection?

    Part Number: TMUX1575 Other Parts Discussed in Thread: SN74CBT3245A , SN74CBT3245C , SN74CBT3861 , SN74CBTLV3861 , SN74CBT3257C , TMUX1574 , , SN74LV4066A , TMUX1511 , TS5A23157 , TMUX1072 System isolation is critical for power sequencing, managing bus contentions…

  • [FAQ] TMUX1574: [FAQ] What S-Parameter Models and how do I use them?

    Part Number: TMUX1574 S-parameter (or scatter parameter) models are AC based models used to understand small scale AC performance of devices. They are created by measuring the scattering (reflections and transmissions) of a device based on some stimulus…

  • [FAQ] What is Latch up in CMOS Devices and How can Latch up Immune Multiplexers Improve System Reliability?

    What is Latch up? Latch-Up is a condition where a low impedance path is created between a supply pin and ground. This condition is caused by a trigger (current injection or overvoltage), but once activated, the low impedance path remains even after the…

  • [FAQ] What Analog Switch / Multiplexer Should I Use for Beyond the Supply Applications?

    One of the features our devices have is beyond the supply. It allows them to pass a voltage signal below ground or above VDD. There are three different types of beyond the supply operations: Negative signal operation Positive signal operation Negative…

  • [FAQ] What are the differences between PCA and TCA I2C switches?

    When choosing an I2C switch , you might be curious as to why a PCA family switch has a TCA counterpart and vice versa. The differences are the following: 1) TCA devices typically have lower supply voltage thresholds 2) TCA devices have corrected previous…

  • [FAQ] How much current can I put through my analog switch/multiplexer?

    Other Parts Discussed in Thread: TMUX8212 , TMUX1112 For analog switches in many applications, several 100mA of current needs to be supported through the switch (from source to drain, or NO/NC to COM). Many devices already have a max current specified based…

  • [FAQ] Industry Standard 3257 Switch Options

    Part Number: SN3257-Q1 Other Parts Discussed in Thread: TMUX1574 , TS3A5018 , SN74CBTLV3257 , TMUX1575 Part Number SN3257-Q1 TMUX1574 TS3A5018 SN74CBTLV3257 Operating Supply Voltage 1.5 to 5.5V 1.5 to 5.5V 1.65 to 3.6V 2.3 to 3…

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