SN74HCS02-Q1: output oscillation at start up

Dongbao Zhou

Part Number: SN74HCS02-Q1

Hi team,

Can you help check below simulation results? According to my understanding, there shouldn't be any oscillation.

Regards,

Dongbao

0 Dongbao Zhou over 3 years ago

PS: Pspice model is download from ti.com

0 Chad Crosby over 3 years ago in reply to Dongbao Zhou

Hi Dongbao,

What software are you using to simulate this?

Thanks!

Chad Crosby

0 Dongbao Zhou over 3 years ago in reply to Chad Crosby

Hi Chad,

The simulation tool is SIMetrix, vesion: V8.1.

Regards,

Dongbao

0 Clemens Ladisch over 3 years ago

Guru 244390 points

Please show the output of the other NOR gate, and the voltages directly at the B inputs.

Logic forum