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SN74LVC1G123: TIDA-060008 CEXT connection

Borx
Prodigy 95 points
Part Number: SN74LVC1G123
Other Parts Discussed in Thread: TIDA-060008

Should CEXT (pin 6) be connected to GND? In the TIDA-060008 it is connected to GND but the datasheet is only to one of the capacitor ends.

  • +1
    Guru 272400 points

    The FAQ in the SN74LVC1G123 app note says:

    5.6 Can I connect the Cext pin to ground?

    It is best to follow the datasheet recommendations. If your monostable multivibrator recommends not connecting Cext to ground, then do not connect it to ground.

    In some monostable multivibrators the Cext pin is internally tied to ground, but in some it is not. If the datasheet is unclear and the information is required, use an ohmmeter to check the resistance between the two pins. If the resistance reads less than 1 Ω, it is safe to connect both to ground.

  • 0 in reply to Clemens Ladisch
    Prodigy 95 points

    Thanks for pointing that out.