SN74LV1T126: Level shifter understading differences between components

Diego Moreno1

Part Number: SN74LV1T126

Hi:

I´m interested to aply a level shifter to a rgb adressable strip control, it has the next atributes and i want to understand better the component to use:

-VCC of 5 Volts

-Vin (data input) 0.7VCC (3.5V minimum ti have high state), less than

-GND

My micro controller only has 3.3V outputs so i need domething to leveling up to >3.5V, i have the next components checked for that purpose:

-SN74LV1T126

-LSF0204

-Others?

Thank you.

over 5 years ago

0 Clemens Ladisch over 5 years ago

Guru 317870 points

How many signals?

The SN74LV1T126 does what you want. The LSF requires pull-up resistors that must be correctly sized for the desired frequency.

0 Diego Moreno1 over 5 years ago in reply to Clemens Ladisch

Prodigy 30 points

Could you check if im doing right the leveling up from 3.3 to 5? please if i need resistors or cap, tell me, thank you:

0 Clemens Ladisch over 5 years ago in reply to Diego Moreno1

Guru 317870 points

Look OK. There should be a decoupling capacitor near each chip to prevent supply voltage dips when switching. Are you going to use PWM?

0 Diego Moreno1 over 5 years ago in reply to Clemens Ladisch

Prodigy 30 points

Its like a serial communication, i will put a decoupling cap, thank you for your answers.

Regards.

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SN74LV1T126: Level shifter understading differences between components