SN74AUP1T34-Q1: whether the part support signal direction from high voltage to low voltage

zhipei zhang

Part Number: SN74AUP1T34-Q1
Other Parts Discussed in Thread: 2N7001T, SN74AXC1T45

in datasheet, there is only introduction about the application of signal from low voltage to high voltage. please tell if it support the voltage reduction case.

over 5 years ago

0 ShreyasRao over 5 years ago

TI__Guru 57800 points

Zhipei,

The SN74aUP1T34-Q1 supports both high to low and low to high translation. Both the Vcca and Vccb supports voltage range from 0.9 to 3.6V.

What is the application voltage ranges/ and other requirements?

You could also consider using the new products 2N7001T or SN74AXC1T45 for up and/or down translation.

0 zhipei zhang over 5 years ago in reply to ShreyasRao

Prodigy 185 points

Hi Rao,

Thanks for your information, very appreciated!

In my case, the application voltage need to be translated from 3.3 Volts to 1 Volts/1.8Volts with around 1.6MHz signal frequency. please comment if there is any concern since the datasheet are just about signal translation from low voltage to high voltage.

I will check your recommendation about the new products. Thanks!

Regards,

Zhipei

0 Emrys Maier over 5 years ago in reply to zhipei zhang

TI__Guru* 96712 points

Hi Zhipei,
The speed of a device is heavily influenced by the output supply voltage - that's what will most significantly limit the speed because the output has to drive a much larger load than any internal logic.

So, for your example, your output is either 1 V or 1.8V. The SN74AXC1T45 definitely won't have any problems with that speed at either of those voltages.

0 zhipei zhang over 5 years ago in reply to Emrys Maier

Prodigy 185 points

Hi Maier,

Thanks for your replying. Now I will go to close the subject.

Regards,

Zhipei

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SN74AUP1T34-Q1: whether the part support signal direction from high voltage to low voltage