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TS5A3157: "Supply-current change" data (Supply-current under S=Vcc-0.6V)

Part Number: TS5A3157
Other Parts Discussed in Thread: SN74LVC1G3157, , TMUX1247, TMUX1237


According to the datasheet of SN74LVC1G3157, you can find the "Supply-current change" data. This data is under S= Vcc-0.6 V (Delta Icc spec) condition, there can be excess current consumption or supply-current change up to 500uA.

How about TS5A3157YZPR?  Is it same phenomena?  Do you have any data of TS5A3157?  Please advise us.

Thanks and best regards,

  • All CMOS inputs have shoot-through currents if the input voltage is not near the rails. But it is not possible to estimate its magnitude without actual measurements, or detailed knowledge of the input transistors.

    The TS5A3157 is designed for control voltages that match its supply. If you want to use control signals with a lower voltage, you should use a device with the "1.8-V compatible control inputs" feature.

  • Hi M. Hattori,

    Clemens is correct. There are shoot through currents when the control voltage isn't ~VDD or ~GND. As control voltage deviates from VDD or GND shoot through currents will happen.

    Both of the devices you have listed will have significant increases in supply current when you are not running the device at the rails. There are 1.8V compatible devices that can handle smaller control signals  without the huge increases in current.  The TMUX1237 and TMUX1247 are single channel 2:1 switches with similar parameters and handle lower control voltages. The TMUX1237 if operated in valid threshold keeps its current ~100uA or lower.

    Please let me know if you have any other questions and I will what I can do!


    Parker Dodson