CD74HC4067: VOH and VOL

Part Number: CD74HC4067
Other Parts Discussed in Thread: DAC8742H,

Hi,

Please share VOH and VOL details of CD74HC4067M96. Also the datasheet looks like very old.can i use this part for my new project?

I need YTEOL 15 years.

Thanks,

Monisha oM

over 4 years ago

0 Clemens Ladisch over 4 years ago

Guru 316470 points

This is a passive switch. There are not any active outputs; a closed switch behaves like a 60 Ω resistor. You can compute the voltage drop over the switch if you know the current through the switch.

This device is still being manufactured because customers still buy it.
See [FAQ] When will TI End of Life (EOL) or Obsolete a certain logic device?

0 Parker Dodson over 4 years ago

TI__Guru 52052 points

Hi Monisha,

Clemens is correct. This is an analog switch so there is no VOH/VOL as the device acts as a RC circuit - so the outputs of the switch depend on the load impedance and frequency of the signal. Also please see the link that Clemens added for information about the EOL / FAQ as it should have some helpful information.

If you have any other questions please let me know!

Best,

Parker Dodson

0 oM over 4 years ago in reply to Parker Dodson

Intellectual 420 points

Hi,

Thanks for your response. Iam connecting this MUX/DEMUX for to connect 16 channel HART signals to one hart transceiver . The output of CD74HC4067M96 is connected to DAC8742H, Whether this design will work or not?

0 Clemens Ladisch over 4 years ago in reply to oM

Guru 316470 points

You have kept your signal frequency secret, but the DAC's maximum input frequency is 12.5 MHz. The CD74HC4067 can handle that.

0 Parker Dodson over 4 years ago in reply to oM

TI__Guru 52052 points

Hi Monisha,

As Clemens indicated the input frequency is capped to 12.5MHz which is pretty low and shouldn't have issues with this part at that frequency.

The DAC is a high impedance load so I don't see you having issues with this implementation - if you have other questions please let me know!

Best,

Parker Dodson

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CD74HC4067: VOH and VOL