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Chip that gives 50MHz TTL signal to a microcontroller

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scdoro

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Hi all, I need to have a input signal of 50Mhz TTL to my MCU.
But so far, i am only using a LM339 Comparator which can give me only up to 300Khz. Is there are type of chip which is fast enough ? or any cct can i can use to give me up to 50MHz ??
Thanks a lot
 

Re: 50MHz TTL signal

Dear friend
Why don't you use Crystal or Oscillator to do the job. It's easy and takes little space on your board. Go to Mouser or Digikey websites. They have ton of them.
Hope it helps.
T.L
 

Re: 50MHz TTL signal

scdoro said:
Hi all, I need to have a input signal of 50Mhz TTL to my MCU.
Click to expand...

What MCU do you use / I hope it's not a Scenix (Ubicom) SX one.
 

Re: 50MHz TTL signal

hi, i am using PIC 16F872 :)
 

Re: 50MHz TTL signal

silvio said:
What MCU do you use / I hope it's not a Scenix (Ubicom) SX
one.
Click to expand...
Why would you hope that? That thing rocks :)
 

Re: 50MHz TTL signal

scdoro said:
hi, i am using PIC 16F872 :)
Click to expand...

is this PIC can run on speed 50MHz, this speed is minimal speed to capture 50MHz signal.
I think you must use frequency divider, so speed of PIC can capture frequency of signal input.
 

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