TXS0102: push/pull and open drain

Fred Cheng

Expert 5970 points

Part Number: TXS0102

Hi team,

customer wants to know how does this device recognize open-drain or push pull signal?

or it does recognize?

since there's a integrated pull-up 10kohm, does this will affect push-pull condition?

over 3 years ago

0 Clemens Ladisch over 3 years ago

Guru 320980 points

This device does not recognize the input signal type. There are not two different modes.

The edges of push/pull signals are faster, which results in faster switching at the outputs. When you are using open-drain signals, only the open-drain timings are guaranteed. When you are using push/pull signals, the faster push/pull timings are guaranteed.

0 Fred Cheng over 3 years ago in reply to Clemens Ladisch

TI__Expert 5970 points

1. but 10kohm will be a extra loss to push/pull device when transimitting 0, since there will be a current straight through 10k to ground , right?

2. does edge-accelerator also apply on push/pull?

0 Clemens Ladisch over 3 years ago in reply to Fred Cheng

Guru 320980 points

1. Yes, a low signal needs to sink the current through the pull-up resistors on both sides.

2. Yes, the edge accelerators are triggered by any rising edge.

The only difference between open-drain and push/pull is that the latter is faster. The TXS always works in the same way, only the speed might change.

+1 Fred Cheng over 3 years ago in reply to Clemens Ladisch

TI__Expert 5970 points

I see, you mean the push/pull siganl itself is already faster

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TXS0102: push/pull and open drain