Microcontroller directly connect to the outside world.

FAB63476

Intellectual 530 points

Other Parts Discussed in Thread: TPD1E04U04, TPD1E05U06

Hi!

I am finishing a design where I need a direct MSP430 UART conection to the outside world.

This product will be connected to another equipment, in an automotive enviroment.

Which kind of protection do you suggest in order prevent ESD strikes.

I don't need to certify any standard, it is just for avoiding damages to my product.

Thanks!

over 9 years ago

0 ShreyasRao over 9 years ago

TI__Guru 62300 points

Hello ,

The external protection devices are supported by external ESD protection forum .

0 Guy Yater over 9 years ago

TI__Genius 12190 points

Hello,

I recommend TPD1E04U04. It clamps ESD to a very low voltage (9V for 8-kV ESD) which will protect the MSP430 exceptionally well against ESD. It also offers very low capacitive loading to the UART lines of 0.5 pF. Place these close to the connector with robust ground schemes.

Regards,

0 FAB63476 over 9 years ago in reply to Guy Yater

Intellectual 530 points

Thanks!
Is there any cheaper solution?

0 Guy Yater over 9 years ago in reply to FAB63476

TI__Genius 12190 points

At $0.07 ea at 1 ku volumes it is one of our lower priced TVS. There is TPD1E05U06 at $0.05, our least expensive TVS. It clamps 8-kV ESD at 25 V and is 0.42 pF. They are both in DPY package.

0 FAB63476 over 9 years ago in reply to Guy Yater

Intellectual 530 points

ok I was looking at Digikey numbers. However, that price you are referencing is buying tge 10k reel.
By far, I'm not going to buy that amount of component because my production is not that big, sadly.

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Microcontroller directly connect to the outside world.