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SN74CBT16210C: VCC=3.3V operation

daniel lin
Prodigy 220 points
Part Number: SN74CBT16210C
Other Parts Discussed in Thread: SN74CB3Q16210

The datasheet mentioned "supply voltage range is -0.5 ~ +7V", is it possible to connect the VCC=3.3?

Rail-to-rail input voltage swing will include 0-5V, and 0-3.3V. What is the ON resistance will be for both Vin?

  • +1
    Guru 296910 points

    The absolute maximum ratings tell you that the device will not be damaged. To make it work correctly, you have to stay inside the recommended operating conditions, i.e., VCC ≥ 4 V.

    Please note that plain CBT switches do not work rail-to-rail. For a 3.3 V supply, use a CBTLV device. When you have signals above VCC, use a CB3Q device like the SN74CB3Q16210.

  • 0 in reply to Clemens Ladisch
    Prodigy 220 points

    Thanks for the reply. CB3Q only support 64mA per channel, which is not good for my 5V 500mA peak current as I can only have 6 ports available. The good side for CB3Q is Ron=~10 ohms when Vin=5V.