TMUX1104: TMUX1104 output current

HARI T O1

Expert 1385 points

Part Number: TMUX1104
Other Parts Discussed in Thread: SN74HCS238, TPIC6C595

Dear Team,

May I know the output current capacity of TMUX1104.

Regards

HARI

0 Clemens Ladisch over 3 years ago

Guru 284830 points

The absolute maximum rating for the source/drain current is 30 mA.

0 HARI T O1 over 3 years ago in reply to Clemens Ladisch

Expert 1385 points

Hi Clemens,

Thank you very much.

I using this to drive the base of a transistor which is driving a relay of coil current 40mA.

The BJT has a beta of 100.

I think I can use this.

May I know your thoughts/suggestions.

Regards

HARI

0 Clemens Ladisch over 3 years ago in reply to HARI T O1

Guru 284830 points

A saturated BJT has a lower beta. Anyway, this will work.

It might be simpler and cheaper to use a digital decoder like the SN74HCS238.

It might be possible to replace both logic and transistors with a single power logic shift register like the TPIC6C595.

0 Tyler McGuire over 3 years ago

Hi Hari,

The absolute maximum output current ratings are found on the datasheet as source or drain continuous current. This device is rated for -30mA to 30mA.

The TMUX1104 will be able to pass/support up to the maximum rating of +/-30mA, so as long as it is below that this will work in your application.

Thanks,

Tyler

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