SN74HC04: What parameters should be paid attention to when this chip is designed as an RC oscillator？

Matthew Chen

Intellectual 1340 points

Part Number: SN74HC04
Other Parts Discussed in Thread: SN74HCS04

Hi TEAM

What parameters should be paid attention to when using SN74HC04 to design an NOT gate oscillator?

Thanks

matthew

over 3 years ago

0 Clemens Ladisch over 3 years ago

Guru 310880 points

The Δt/Δv limit. In other words, use the SN74HCS04 instead.

0 Sebastian Muriel over 3 years ago

TI__Genius 17340 points

Hi Mathew,

As Clemens stated with the SN74HC04 you must meet Δt/Δv requirements. The SN74HCS04 is better suited for this application, it has Schmitt Trigger inputs that have no input transition requirements. The output response will also have a much cleaner signal.

Regards,

Sebastian

Logic

Logic forum

SN74HC04: What parameters should be paid attention to when this chip is designed as an RC oscillator？