LSF0108: pull-up resistor problem

Allen Chu

Expert 1080 points

Part Number: LSF0108

Dear Engneer,

What is the output level of this logic conversion without adding a pull-up resistor to B3?

5 months ago

0 Jack Guan 5 months ago

TI__Guru 51901 points

Hi Allen,

It would be 1.2V, assuming that the signal is fixed direction and A-side is input and B-side as output.

Regards,

Jack

0 Allen Chu 5 months ago in reply to Jack Guan

Expert 1080 points

Hi Jack,

Thanks.

LSF0108-Q1 VI/O Continuous channel current 128mA max：Does this refer to the current of each channel or the total current of all channels?

0 Joshua Salinas 5 months ago in reply to Allen Chu

TI__Mastermind 34420 points

Hello Chu,

We are looking into this and will respond soon. Thanks!

Regards,

Josh

0 Jack Guan 5 months ago in reply to Allen Chu

TI__Guru 51901 points

Hi Chu,

The continuous output current is rated per channel. Note that the device is FET based with no buffering circuitry, and this current is also needed to be capable of sinking back into the driver side. Please also note that the recommended continuous channel current is up to 64mA as mentioned in the Recommended Operating Conditions table.

Regards,

Jack

Logic

Logic forum

LSF0108: pull-up resistor problem