SN74AUC17: SCHMITT-TRIGGER BUFFER output impedance

Shubham Srivastava

Part Number: SN74AUC17

Tool/software:

Hi TI Team,

We are planning to use this buffer in our design. Can you please help me with the output impedance value of this buffer.

Best Regards,

Shubham

5 months ago

0 Clemens Ladisch 5 months ago

Guru 303540 points

The worst-case output impedance can be computed with V_OL / I_OL and (V_CC − V_OH) / I_OH; the typical output impedance is roughly half that.

0 Shubham Srivastava 5 months ago in reply to Clemens Ladisch

Prodigy 10 points

Thanks Clemens, but I'm looking for info like this

Please let me know if you have this number.

+1 Clemens Ladisch 5 months ago in reply to Shubham Srivastava

Guru 303540 points

The AUC application report says:

AUC Little Logic devices have been optimized for transmission lines of 50 Ω to 65 Ω.

Please note that AUC outputs change their impedance dynamically during switching, so you should not try to adjust the impedance with a series resistor.

0 Shubham Srivastava 5 months ago in reply to Clemens Ladisch

Prodigy 10 points

Thanks Clemens for this information.

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SN74AUC17: SCHMITT-TRIGGER BUFFER output impedance