TXS0102: TXS0102DCUR Issue

GARETH OU

Guru 10365 points

Part Number: TXS0102

Tool/software:

Attached is the measured waveform.

Green: VCCA (+1.8V)

Blue: OE Pin

Red: A1 Pin

4 months ago

0 Michael Ikwuyum 4 months ago

TI__Mastermind 34265 points

Hi Gareth,

Seems input goes low when device is disabled as expected, thanks.

Best Regards,

Michael.

0 Jack Guan 4 months ago

TI__Mastermind 28956 points

Hi Gareth,

Please also confirm the below requirements are met by the OE input in 2nd waveform provided:

Regards,

Jack

0 GARETH OU 4 months ago in reply to Jack Guan

Guru 10365 points

Hi Jack

Could you help check below the TXS0102 schematic and any need to adjust

R979 has been changed to the same voltage as VCCA.Thanks

0 Clemens Ladisch 4 months ago in reply to GARETH OU

Guru 287860 points

The TXS is a passive switch. Any I/O pin can go low only when an external device pulls it low.

The OE pin is a high-impedance input. The noise on the waveform is caused by the power supply. (And OE is overvoltage tolerant; it does not matter whether you use 1.8 V or 3.3 V.)

Logic

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TXS0102: TXS0102DCUR Issue