SN74LVC8T245: 5V tolerant?

user5163865

Genius 4150 points

Part Number: SN74LVC8T245
Other Parts Discussed in Thread: SN74LVC245A

Hi,

Our customers are looking for bidirectional translators with

Vcca = Vccb = 3.3V
Data inputs A / B = 5V
5ch(for SPI + 1port)~

They want to connect to a 3.3V / 5V external device using only one bidirectional translator with a 3.3V power supply.

Is there a product that meets the above requirements? SN74LVC8T245 does not seem to meet.

Best regards,
Hiroshi

0 Clemens Ladisch over 5 years ago

Guru 327710 points

A translator with only a 3.3 V supply will never be able to output a 5 V signal. Would this be required?

0 user5163865 over 5 years ago in reply to Clemens Ladisch

Genius 4150 points

No 5V output is required.
Thank you.

Hiroshi

0 Emrys Maier over 5 years ago in reply to user5163865

Hi Hiroshi-san,

If I understand correctly, you just need an over-voltage tolerant transceiver. I think the SN74LVC245A should work for your application.

0 user5163865 over 5 years ago in reply to Emrys Maier

Genius 4150 points

Hi,

I checked the datasheet.
I will inform the customer of this product.
Thank you.

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