SN74LVC245A: What is the impedance of A port when VCC power down, /OE=GND?

Gordon Xu

Part Number: SN74LVC245A

Hi experts,

My customer want to design a circuit as below.

What is the impedance of A port when 3.3VCC1 power down, /OE=GND? My customer need to ensure that the port A maintain high impedance when 3.3VCC1 power down, /OE=GND, becaues they need to ensuse VA1 =3.3VCC2.

Thanks!

BR,

Gordon

over 3 years ago

+1 Clemens Ladisch over 3 years ago

Guru 316690 points

When powered down (VCC = 0 V), all I/Os are high impedance.

+1 Sebastian Muriel over 3 years ago

TI__Genius 17990 points

Hi Gordon,

This device has the Ioff feature so when Vcc = 0V, all I/Os are high impedance.

Regards,

Sebastian

0 Gordon Xu over 3 years ago in reply to Sebastian Muriel

TI__Prodigy 440 points

Hi Sebastian ,

Thanks for your confirmation.

BR,

Gordon

0 Gordon Xu over 3 years ago in reply to Clemens Ladisch

TI__Prodigy 440 points

Hi Clemens,

Thanks for your confirmation.

BR,

Gordon

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SN74LVC245A: What is the impedance of A port when VCC power down, /OE=GND?