LMK1D1204: LP-HCSL / HCSL input termination

Konstantin Vilyuk

Part Number: LMK1D1204

Hi,

I'm currently searching for an alternative for the Si53340 buffer. The LMK1D1204 seems to be nearly identical. But I'm wondering how to properly terminate a (LP)-HCSL input signal on the LMK1D1204. Can I use the same configuration as on the Si53340?

Or do I need to AC-couple the HCSL signal and rebias it on the input of the LMK1D1204?

Best regards

Konstantin

over 3 years ago

0 Kia Rahbar over 3 years ago

TI__Expert 8585 points

Hello Konstantin,

The same termination can be used.

Regards,

Kia Rahbar

0 Konstantin Vilyuk over 3 years ago in reply to Kia Rahbar

Prodigy 10 points

Hi Kia,

thanks for answering! Just out of curiosity: what makes you so sure that the same termination can be used? I can't find any app notes or example circuits with the LMK1D1204 with HCSL inputs. Or is the LMK1D1204 simply a direct replacement for the Si53340 (as both are pin compatible)?

Best regards

Konstantin

+1 Kia Rahbar over 3 years ago in reply to Konstantin Vilyuk

TI__Expert 8585 points

Hello Konstantin,

The LMK1D1204 supports HCSL input types and the standard HCSL termination is as you have shown above. All of our clocking devices that support an HCSL input will use the termination you have shown above.

The LMK1D1204 is also a direct replacement for the Si53340.

Regards,

Kia Rahbar

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LMK1D1204: LP-HCSL / HCSL input termination