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SN74CB3Q3257: SN74CB3Q3257 IO maximum current

Intellectual 1040 points

Replies: 2

Views: 61

Part Number: SN74CB3Q3257

hi All
Customers are using SN74CB3Q3257 to design a SIM card selector switch.

Power needs to be transmitted together. The power current is about 50mA. Can the IO of SN74CB3Q3257 support such a large current?
If not, do we have a suitable chip?


The attachment is SCH, where SIM_VREG (50mA) is the power pin

  • The absolute maximum rating is 64 mA.

    The voltage drop over the switch is 50 mA × 4 Ω = 0.2 V. This might be too much; consider a load switch.

  • In reply to Clemens Ladisch:

    Hi Seasat,

    You can look at other parts in similar configuration with high current (> 100mA) in our device search tool

    What are your bandwidth requirements and signal range?

    Thanks

    Saminah

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