SN74LV14A: Indefinite output

Yusuke Mukuno

Expert 7395 points

Part Number: SN74LV14A
Other Parts Discussed in Thread: SN74LV540A, TPS3840, TLV810E

Hi Expert,

SN74LV14A Minimum Vcc is 2V.

Will it be indefinite output at less than 2V Vcc during system shutdown?

If it will be High output, they cannot use this device. It would be nice if the output was fixed low at less than 2V..

Thanks

Muk

over 1 year ago

+1 Clemens Ladisch over 1 year ago

Guru 244370 points

For a supply below 2 V, correct operation is not guaranteed, so the output might be high.

Devices with /OE input (e.g., SN74LV540A) guarantee that the outputs can be disabled during power-up/-down. To generate the control signal, you can use a voltage supervisor IC like the TLV810E or TPS3840.

0 Yusuke Mukuno over 1 year ago in reply to Clemens Ladisch

TI__Expert 7395 points

Thanks Clemens-san

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SN74LV14A: Indefinite output