Level Translator Parts Suggestion

Anoop Kumar K V

Other Parts Discussed in Thread: TXS0108E

I need I2C, JTAG and UART voltage level translators which supports Va-Vb = 0.

Case 1 : Va =3.3V, Vb=1.8V

Case 2 : Va = 3.3V, Vb=3.3V

As per requirement I need to switch Vb from 1.8V to 3.3V and vice-versa. Please suggest level translator parts for all three interfaces.

0 Clemens Ladisch over 5 years ago

Guru 316690 points

If you do not need any pull-down resistors, you can use the TXS0108E (V_CCA ≤ V_CCB).

0 Dylan Hubbard over 5 years ago

Hey Anoop,

0 Anoop Kumar K V over 5 years ago in reply to Dylan Hubbard

Thank You

0 Anoop Kumar K V over 5 years ago in reply to Clemens Ladisch

Thank You for the Part suggestion.

Can I translate JTAG,I2C and UART signals simultaneously using available 8 lines in TXS0108E?

4 JTAG lines (TMS,TCK,TDI,TDO), 2 I2C Lines (SDA,SCL), 2 UART lines (TX,RX) = Total 8 lines

Will this cause any issue?

0 Clemens Ladisch over 5 years ago in reply to Anoop Kumar K V

Guru 316690 points

The TXS can do this. But read sections 9.3.2…5 of the datasheet for its restrictions.

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