TXS0102: VIH and VIL Threshold Clarification

Jacob Ontiveros

Part Number: TXS0102

Hi Team,

From the datasheet, I can see that VIH minimum is VCCI – 0.2v on A port and VCCI – 0.4v on B port.

This means that if we have configured the device in such way that VCCA is 1.8v and VCCB is 3.3v and the data direction is B to A, is that mean that VIHmin = 3.3 – 0.4 = 2.9v? This means the the voltage swing must be very close to the supply voltages.

Am I understanding the datasheet correctly?

Jacob

over 3 years ago

0 Jacob Ontiveros over 3 years ago

TI__Expert 6280 points

I also forgot to ask if we have a SPICE model for the TXS0102.

+1 Clemens Ladisch over 3 years ago

Guru 318050 points

The I/Os are not buffered. For signal voltages below V_CCA, the TXS behaves as an analog switch, i.e., the A and B pins are connected directly. (For voltages above V_CCA, the switch is open, and the pull-up resistor determines the output voltage.)

All signals have pull-up resistors and do not allow pull-down resistors, so they will go to the supply voltages.

+1 Dylan Hubbard over 3 years ago in reply to Clemens Ladisch

TI__Mastermind 46365 points

Hey Jacob,

Here is an FAQ that covers this topic. Unfortunately, we do not have a SPICE model for this device.

Logic

Logic forum

TXS0102: VIH and VIL Threshold Clarification