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GaudiLabs / OpenTheremin_Shield

Hardware files for the Open.Theremin project
GNU General Public License v3.0
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CD4060 Counters #1

Open jwettroth opened 8 years ago

jwettroth commented 8 years ago

The counter used in this circuit are only rated for 3.5 MHz at 5v, they will run up to 12 MHz at 15v. I would however recommend using 74HC4060 counters, they can easily handle these frequencies and are pin compatible, etc.

GaudiLabs commented 8 years ago

Hi

You are right, these chips are overclocked - still works. I changed to 74HC4060 on the newes series. Guess I should update the schematic and BOM on that.

Thanks , Urs

On 01/25/2016 07:00 AM, jwettroth wrote:

The counter used in this circuit are only rated for 35 MHz at 5v, they will run up to 12 MHz at 15v I would however recommend using 74HC4060 counters, can easily handle these frequencies and are pin compatible, etc

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