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Clock & timing forum

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SA555: Regarding the input timing of the reset pin of SA555DR

tokiyoshi.azusa

Prodigy 20 points

Part Number: SA555

Is it okay to input a signal to the reset terminal before inputting the Vcc voltage?

8 months ago

0 Chris Featherstone 8 months ago

TI__Mastermind 22580 points

Hello,

No, the reset pin going above the value of Vcc which would be zero volts when powered off may cause permanent damage to the device or affect it's reliability. Reset can track VCC but should not exceed Vcc.

Best Regards,

Chris Featherstone