SN74LVC32APWR open drain

Patrick Chen

Other Parts Discussed in Thread: SN74LVC32A

Hello,

Per below, does SN74LVC32A is open-drain device that need to add external pull up resistor for design? for truth table, Customer can not see Z state while open drain design on output. Could we have reference schematics of SN74LVC32A to customer and any comments for open drain issue? Thank you.

Patrick

over 8 years ago

0 Clemens Ladisch over 8 years ago

Guru 276700 points

The "open-drain" in section 10.1 is an error. Section 10.2.1 ("has balanced output drive") and all the other places that specify high-level output characteristics are correct.

0 Patrick Chen over 8 years ago in reply to Clemens Ladisch

Mastermind 8875 points

Thanks. Clemens.

Due to customer production design has no pull up in HW, SN74LVC32APWR is not open drain structure and don' t need add pull up resistor, correct? Thank you.

BR
Patrick

0 Clemens Ladisch over 8 years ago in reply to Patrick Chen

Guru 276700 points

Yes, a pullup would be superfluous.

Logic

Logic forum

SN74LVC32APWR open drain