LMK00105: (TI) single end clock level shifter

Jimmy Lai

Expert 6845 points

Part Number: LMK00105
Other Parts Discussed in Thread: LMK00304

Dear Team,

May I know whether you there have single end clock level shifter

from 1.8V to 3.3V
1 or 2 single end clock

Many Thanks,

Jimmy

over 2 years ago

0 Ajeet Pal over 2 years ago

TI__Genius 12550 points

Hi Jimmy,

You can go ahead with the LMK00105, which supports single ended input with 0.3V to 2V p-p range and can translate output till Vddo (3.3V).

Thanks!

Regards,

Ajeet Pal

0 Jimmy Lai over 2 years ago in reply to Ajeet Pal

TI__Expert 6845 points

Hi Pal,

Many thanks for your great help. Now there are 2 1.8V clock inputs, each to REFA and REFB, is there a 1 : 1, or 2 : 2? Thank you.

Many Thanks,

Jimmy

0 Ajeet Pal over 2 years ago in reply to Jimmy Lai

TI__Genius 12550 points

Hi Jimmy,

LMK00105 has only one CLKin input and other is OSCin (crystal mode). These are selectable using SEL pin and any one can be selected.

For single ended AC coupled input at CLKin pin, it should follow the below circuit.

Thanks!

Regards,

Ajeet Pal

0 Jimmy Lai over 2 years ago in reply to Ajeet Pal

TI__Expert 6845 points

Hi Pal,

Thanks a lot!

Now there are two 1.8V clock inputs, each to REFA and REFB, is there have another suitable solution for 1 : 1, or 2 : 2? Thank you.

Jimmy

0 Ajeet Pal over 2 years ago in reply to Jimmy Lai

TI__Genius 12550 points

Hi Jimmy,

There is no single device for 2:2 level translation. If any single input out of two needs to be level translated, they can look for LMK00304 also. Otherwise they need to look for 2 device approach for 2:2 solution.

Thanks!

Regards,

Ajeet Pal

Clock & timing

Clock & timing forum

LMK00105: (TI) single end clock level shifter