1 Reply Latest reply on Aug 28, 2017 3:42 AM by prbd

    TCXO input mode on CY29430


      On the CY29430 datasheet, the LF input specification is :


      - VIL (Input low voltage DC coupled input) : 0.2 V max

      - VIH (Input high voltage DC coupled input) :  0.8 min to 1.2 V max


      And on the DC specification :

      VIN Input voltage level All input, relative to GND : –0.5 min  to 3.8 V max


      Does it mean that the TCXO shouldn't deliver more than 1.2V or is it possible to connect à 3.3V TCXO ?


      Best regards,


      F. ROLET

        • 1. Re: TCXO input mode on CY29430

          Hi F.Rolet,


          The TCXO spec is defined on page 13 of the datasheet. It is recommended that 1.2 V should me the max value and that the TCXO should not deliver more than that.

          It is possible to connect a 3.3 V TCXO but we generally do not recommend that.


          Thanks and regards,