LSF0102: A2/B2 no pull-up R and A1/B1 Not Operate?

Ting Ye

Genius 11800 points

Other Parts Discussed in Thread: LSF0102, LSF0101

Hello Team,

With below setup for LSF0102, will B1 follows A1 to low when A1 changes to low level (0.3V)?

Channel 2 is not used and there is no pull-up resistor at A2 and B2.

Set pull-up resistors 300-ohm at both A1 and B1

Put 200k-ohm pull-up resistor to 3.3V at VrefB. VrefA connects to 1.8V directly.

Send 0.3V at A1, and monitor B1.

Below shows that no pull-up resistor at channel-2.

Will there be any problem for LSF0102 channel-1 to operate normally?

Thank you.

Regards,

Ting

over 8 years ago

0 aozer over 8 years ago

TI__Mastermind 29925 points

Hello Ting,

I have notified the engineers who deal with this product line. They should respond to your request as soon as they are available.

0 ShreyasRao over 8 years ago

TI__Guru 61870 points

Hi Ting ,

no issues to have A2/B2 channels being left open . you could consider to use LSF0101 instead.
B1 follows A1 during low level , for high level,the pullup resistor can be used to configure to high level as desired.

0 Ting Ye over 8 years ago in reply to ShreyasRao

TI__Genius 11800 points

Hello Shreyas,

Thank you for the prompt reply!

Regards,
Ting

Logic

Logic forum

LSF0102: A2/B2 no pull-up R and A1/B1 Not Operate?