TXB0108, UNUSED BITS, TIE BOTH A & b TO GND???

Peter Lavelle

Prodigy 40 points

Doing a new design.

Only using 6 of the 8 bits in the design.

I don't want oscillation due to non-connected inputs, and either the A or B side can be the "input".

What is the recommendation for the unused bits?

Tie only the A side bits the Gnd?

Tie both the A & B sides to Gnd?

Use a pull-up/down??

Thanx

over 10 years ago

0 Adam Torma over 10 years ago

TI__Mastermind 45575 points

I/O pins that are unused must be tied at both sides to the same level. The A and B sides of an unused data I/O pair must be held in the same state, i.e., both at VCCI or both at GND.

Thank you,
Adam

Logic

Logic forum

TXB0108, UNUSED BITS, TIE BOTH A & b TO GND???