TXS0102: Logic converter SCH Review

Kunal barot

Part Number: TXS0102

Hi TI support

I need to interface UART communication between Host uC to RF devcie , both IO level have different voltages. uC have 3.3V IO and RF module have 1.8V IO.

I have selected TI chip PN: TXS0102DCTR. see attached SCH and let us know if this is correct for this application

over 6 years ago

0 Clemens Ladisch over 6 years ago

Guru 317280 points

Looks OK, but this part of the schematic does not show a decoupling capacitor on the 3.3 V power supply.

You can drop the pull-up resistor on A2; the TXS has integrated 10 kΩ pull-up resistors on the data lines.
You can drop the pull-up resistor on OE; this pin is a high-impedance CMOS input.

0 Kunal barot over 6 years ago in reply to Clemens Ladisch

Intellectual 605 points

So can we left OC pin as NC. and chip will always be enable. right??

0 Clemens Ladisch over 6 years ago in reply to Kunal barot

Guru 317280 points

No, CMOS inputs must always be driven to a valid logic level. Just connect OE directly to 1.8 V.

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TXS0102: Logic converter SCH Review