SN74LVC126A: Can SN74LVC126A support UART(6MHz) data?

Gust Zhang

Part Number: SN74LVC126A

Hi Team

My customer find it doesn't work when using 6MHz UART data, but It can support 3MHz UART data. I have checked datasheet and it mentioned that SN74LVC126A could support 100MHz application. Can you double check whether SN74LVC126A can support 6MHz UART transmission rate? Thanks!

Best Regards,

Gust

over 3 years ago

0 Clemens Ladisch over 3 years ago

Guru 316690 points

The SN74LVC126A itself can handle these frequencies easily.

I'd guess that some capacitance is too high. Please show the schematic. If there are long traces, connectors, or cables, show (or at least describe) the board.

0 Emrys Maier over 3 years ago

TI__Guru* 97046 points

In addition to the details Clemens requested, I would also want to know the supply voltage. This can significantly affect the maximum operating frequency.

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SN74LVC126A: Can SN74LVC126A support UART(6MHz) data?