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LM567C: Temperature range

David Huang
Intellectual 2285 points
Part Number: LM567C
Other Parts Discussed in Thread: LMC567

Hi Team,

Could anyone let me know why the recommended temp in the ds is -20 - 120C?

  • 0
    TI__Guru** 112850 points

    Hi David,

    Datasheet section 7.2 is wrong, Ta should be 0C to 70C.

    BTW, LMC567 is recommended as it has better VCO frequency accuracy.

  • 0 in reply to Noel Fung
    TI__Intellectual 2285 points

    Hi Noel,

    Thanks. I just checked LMC567 and got a question about the pinout.

    On the page 3 of the ds, pin 5 is marked as T-cap and pin 6 is marked as T-res, however in the typical application block diagram and the layout diagram on page 10 and page 12 they seem to be reversed(pin 5 is T-res and pin 6 is T-cap). Also I compared with LM567's pin setup and layout, and it seems like they got almost the same layout, while LM567 has it's pin 5 marked as T-res and pin 6 as T-cap.

    Could you help check if the pinout on LMC567 ds is correct?

    Also, I in 7.1 the device's maximum rating is 2Vp-p minimum for input voltage, could you elaborate what does this mean?(Is the minus mark missing here?)

    Regards,

  • 0 in reply to David Huang
    TI__Guru** 112850 points

    Hi David,

    This part is pretty old, there are several errors in the datasheet, apologies.

    2Vpp is the max. input voltage swing. VIH is Vcc + 0.5V. 

    Pin 5 should be T_res; Pin 6 is T_cap.