LMK05318B: About LMK05318B

wenxing zheng

Part Number: LMK05318B
Other Parts Discussed in Thread: LMK05028, LMK00105

Hello,

My design is :two 1PPS input

one 1pps output (single-ended,3.3V LVCOMS)

one 10MHz output (single-ended,3.3V LVCOMS)

one 25MHz output (single-ended,3.3V LVCOMS).

But the LMK05318B output single-ended just support 1.8V.

Has TI suitable solution meet my design requirement?

0 Amin Eshraghi over 5 years ago

Hello,

The LMK05028 can support 2.5V LVCMOS, would that be sufficient?

What is the output swing needed? 2.5V LVCMOS has min Voh of 1.9V which would meet both 1.2V and 1.8V min Vih on the receiver side.

Thanks and regards,

Amin

0 wenxing zheng over 5 years ago in reply to Amin Eshraghi

Hello,

I want to select LMK05318B + LMK00105，but my concern is if the 1PPS output can support differential output or not?

If it supports , I can apply 3 LMK00105 for 1pps,10MHz and 25MHz diff to single-end?

0 Amin Eshraghi over 5 years ago in reply to wenxing zheng

Hi,

Yes LMK05318B can provide all the signal types associated with it (LVPECL, LVDS, CML, HCSL) for 1 pps output.

Thanks and regards,

Amin

0 wenxing zheng over 5 years ago in reply to Amin Eshraghi

Hi，

Does LMK00105 support 1pps input?

0 Amin Eshraghi over 5 years ago in reply to wenxing zheng

Hello,

Per the datasheet, it should be okay.

Thanks and regards,

Amin

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