Looking for an IC to convert digital 0/1 signals to 7V/-0.4V logics/pulses.

Bruce Lu

Other Parts Discussed in Thread: TLV7211, TLV1805

Hi team,

I am looking for an IC which can convert digital 0/1 signals to 7V/-0.4V logics/pulses. Could you please recommend one for me?

Thanks very much!

Bruce

over 4 years ago

+1 Clemens Ladisch over 4 years ago

Guru 316440 points

Use a comparator with push/pull output (e.g., TLV7211, TLV1805) with a reference voltage of about 1.5 V, and power it from the -0.4 V/7 V rails.

+1 Chuck Sins over 4 years ago in reply to Clemens Ladisch

TI__Mastermind 25900 points

Thanks Bruce for your question and Clemens for offering some solutions.

What frequency is the input and what is the range of duty cycle? Once we have that information, we can provide a simulation circuit for you to use. Clemens idea of using a comparator with a push pull output will provide the most symmetrical rise and fall times at the output but it's also possible to use an open drain device if the input frequency is not very fast.

Chuck

0 Bruce Lu over 4 years ago in reply to Clemens Ladisch

Prodigy 25 points

Thanks Clemens very much! I will check TLV7211/TLV1805 as your suggestion.

Bruce

0 Bruce Lu over 4 years ago in reply to Chuck Sins

Prodigy 25 points

Thanks Chuck.

My application is using MCU's GPIO pins as data and clk line for my simple special communication use.

The highest frequency is around 1MHz, and the duty cycle range 50% ~90%.

Furthermore, is there any comparator that its output can be floating?

Appreciate a lot!!

Bruce

0 Clemens Ladisch over 4 years ago in reply to Bruce Lu

Guru 316440 points

The TLV1805 has a shutdown input.

0 Bruce Lu over 4 years ago in reply to Clemens Ladisch

Prodigy 25 points

Thanks a million！Clemens

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Looking for an IC to convert digital 0/1 signals to 7V/-0.4V logics/pulses.