Logic

Logic forum

Not Gate Logic

Kiran A

Intellectual 610 points

Other Parts Discussed in Thread: SN74AHC540, SN74AHC16540, SN74AHC240

Hi,

I am looking for a chip which would act like a "NOT Gate".

Requirement is: I have two select lines wherein i want to select either of the 1 between 2. So when 1 pin drives to VCC other would drive to 0V. It would be good if a chip has array of NOT Gates. High on line-> 2V to VCC. VCC i am good with 3.3V - 5V.

Please suggest suitable part for this.

over 5 years ago

0 ShreyasRao over 5 years ago

TI__Guru 59970 points

Hi Kiran,

I have filtered the parametric search for the desired Vcc range for 2 channels.

http://www.ti.com/logic-circuit/buffer-driver/inverting-buffer-driver/products.html#p106max=5.5;18&p1299=2;2&p1498=Catalog

0 Kiran A over 5 years ago in reply to ShreyasRao

Intellectual 610 points

Hi Shreyas,

Thanks for your response.

Is any chip available which can support upto 21 channel, My requirement is for 21 channels.

0 Clemens Ladisch over 5 years ago in reply to Kiran A

Guru 301910 points

Just change the number of channels in the search function to get this list.

The largest device has 16 channels. You can, for example, combine SN74AHC16540 and SN74AHC540.

0 ShreyasRao over 5 years ago in reply to Clemens Ladisch

TI__Guru 59970 points

Thanks Clemens.

Yes, we narrow down to 2 devices with 16 channels support.

For the 5 remaining channels you can consider using a hex schmitt trigger inverter or another octal device like the SN74AHC540 or SN74AHC240.