High speed monostable multivibrator integrated circuit?

Question

I'm looking for a good monostable multivibrator integrated circuit. It is also called a monostable pulse or one-shot. Ideally, I need a minimum input pulse width of less than 2 nS, and an output pulse width of 30 ns. A very fast rise/fall time is preferred. For example, the MM74HC4538 chip from Fairchild needs a 20ns input pulse, and can give me an output 150ns pulse. It does not matter if it is expensive, I just need something that is commercially available. Thanks for your help!

Answer 1

This may be an application for a schottky diode into an RC driving a logic device from the ALV logic family. A Phillips 74ALVC04 has prop delays of as little as 1.8 nSec so it should have good edge speed. You could try the typical NOR gate circuit using the same logic family but the 2 nSec input pulse is going to be pushing things a bit.

Good luck.

Answer 2

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Answer 3

Sorry, Prince... the 555 is WAAAYY too slow for what the Asker is describing.

The MC10198L is an ECL part, but obsolete. You may be able to get old stock somewhere. It is 10k ECL, and just about as fast as what you need.

As Sight4 said, you may have to "roll your own".

.

Answer 4

you can used the icNE555 it is the best ic to build a monostable
used this;
muhttp://www.uoguelph.ca/~antoon/circ/monovib.htmltivibrator