CDCLVC1310: 1.8v CMOS input, 3 channels 1.8v CMOS output.

Frank Xiao

Genius 12055 points

Part Number: CDCLVC1310
Other Parts Discussed in Thread: LMK1C1104

Hi team,

My customer want to use the device CDCLVC1310 to design 1.8v CMOS input, 3 channels 1.8v CMOS output.

i have checked the datasheet, we may achieve that with set VDD=2.5V, VDDO=1.8V.

Could you please help double check it? Do we have some tips for this requirement?

Thanks.

0 Shawn Han over 5 years ago

Yes, CDCLVC1310 can work, but the reference clock should have minimum VOH > 1.6 V.

LMK1C1104 is a better choice, single 1.8V power supply can work.

0 Frank Xiao over 5 years ago in reply to Shawn Han

Hi Shawn,

You mean the VIH not Voh, correct? Thanks.

0 Frank Xiao over 5 years ago in reply to Shawn Han

hi Shawn,

one more quick question, if the VDD=3.3V/2.5V, VDDO=1.8V. input is LVPECL, Do we have the VOH range data, only have LVCOMS data on datasheet. Thanks.

0 Shawn Han over 5 years ago in reply to Frank Xiao

1, Clock source driver Min VOH > Clock buffer receiver Min VIH (VDD = 2.5 V ±5%, 1.6 V)

2, LVCMOS Output driver depends on VDDO=1.8V.

Clock & timing forum