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APPLICATION INFORMATION

Testing

SN74LVC1GX04

CRYSTAL OSCILLATOR DRIVER

SCES581B – JULY 2004 – REVISED DECEMBER 2006

After the selection of proper component values, the oscillator circuit should be tested using these components.

To ensure that the oscillator circuit performs within the recommended operating conditions, follow these steps:

1. Without a crystal, the oscillator circuit should not oscillate. To check this, the crystal can be replaced by

its equivalent parallel-resonant resistance.

2. When the power-supply voltage drops, the closed-loop gain of the oscillator circuit reduces. Ensure that

3. Ensure that the duty cycle, start-up time, and frequency drift over time is within the system requirements.

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