Datasheet

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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
the circuit oscillates at the appropriate frequency at the lowest V
CC
and highest V
CC
.
3. Ensure that the duty cycle, start-up time, and frequency drift over time is within the system requirements.
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