TXB0106: Voltage Translator with Vcca > Vccb

Dar

Prodigy 100 points

Part Number: TXB0106
Other Parts Discussed in Thread: SN74AXC8T245, TXB0304

Hi,

I would like to ask if you have a similar translator with TXB106 but has a feature wherein Vcca > Vccb?

Thanks,

Darwin

over 5 years ago

0 ShreyasRao over 5 years ago

TI__Guru 55970 points

Darwin,

Would you please let me know the usage of the device in the schematics?

What are the other requirements which may lead to suggestion of other suitable devices.

0 Dar over 5 years ago in reply to ShreyasRao

Prodigy 100 points

Hi Shreya,

Processor Side: Vcca = 3.15V

Peripheral IC side: Vccb = 3.3V

And I would like my OE referenced to 3.3V (Vccb)

Thanks,

Darwin

0 ShreyasRao over 5 years ago in reply to Dar

TI__Guru 55970 points

Darwin,

Currently, you have Vcca < Vccb which doesnt have issues using the TXB0106.

you could also consider using the SN74AXC8T245 for symmetric power supply.

Alternatively, TXB0304 is a suggestion which have fully symmetric supplies up to 3.6V for similiar functionality as TXB0106.
The OE pin can be referenced to Vccb.

0 Dar over 5 years ago in reply to ShreyasRao

Prodigy 100 points

Hi Shreyas,

Thanks for the reply. I'm actually looking to use 6-bit application but TXB0106 specifies that the OE should be on Vcca.

My design requires OE tied with Vccb, Are you seeing a problem if I tied up the OE on the Vccb side if I use TXB0106?

Thanks,

Dar

0 ShreyasRao over 5 years ago in reply to Dar

TI__Guru 55970 points

Dar,

The OE control pin is overvoltage tolerant and hence can be connected to Vccb, if required.

Let me know if anything else.

Logic

Logic forum

TXB0106: Voltage Translator with Vcca > Vccb