SN74LVC2G07: Different IO in two seperate pins- open drain

Vignesh M26

Intellectual 590 points

Part Number: SN74LVC2G07

Hi,

Can we use VCC=1.8V,

1A = 1.8V pull up

2B = 5V pull up

1Y= 3.3V pull up

2Y = 1.8V pull up

Will it function good ? or will it cause any internal leakage issue ??

Please suggest.

Thanks,

Vignesh.M

over 4 years ago

0 Chad Crosby over 4 years ago

TI__Expert 6680 points

Hi Vignesh,

Yes this will work. Per the datasheet: "Inputs and Open-Drain Outputs Accept Voltages Up to 5.5 V".

Thanks!

Chad Crosby

0 Vignesh M26 over 4 years ago in reply to Chad Crosby

Intellectual 590 points

Thanks Chad Crosby,

But having various voltages at each different pin does not cause any issue?

I think only IO levels will be very strict ( depends on the VCC voltage )

No other issue right..

Pls confirm..

Thanks.

Vignesh.M

0 Chad Crosby over 4 years ago in reply to Vignesh M26

TI__Expert 6680 points

Hi Vignesh,

Section 6.3 of the datasheet mentions that for a logic signal to be recognized as a logic HIGH, its minimum value must be 0.65 x VCC (for a VCC = 1.65V to 1.95V). Section 6.3 further goes on to say that input voltages are recommended to be between 0 & 5.5V.

So, in short, yes this configuration will work.

Thanks!

Chad Crosby

0 Clemens Ladisch over 4 years ago in reply to Vignesh M26

Guru 243980 points

Different voltages are no problem. See [FAQ] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)?

0 Vignesh M26 over 3 years ago in reply to Clemens Ladisch

Intellectual 590 points

Thanks Chad Crosby

Regards,

Vignesh.M

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SN74LVC2G07: Different IO in two seperate pins- open drain