Pulse shaping logic device

jimmy xu

Other Parts Discussed in Thread: SN74AUC1GU04, TLV3601

We have a laser trigger pulse which has 250mV amplitude and 2 ns pulse width. We would like to seek a simple solution to shape the laser pulse to 3.3 LVCMOS level and at least 30ns pulse width. Any recommendation would be appreciated.

Thanks,

Jimmy

over 2 years ago

+1 Clemens Ladisch over 2 years ago

Guru 318760 points

250 mV is too low for any logic device. (It might be possible to carefully bias the SN74AUC1GU04, but there is no guarantee.)

You could use a fast comparator like the TLV3601. To implement a delay for the falling edge, use an R-C circuit with a diode; you have to adjust the R/C values according to the desired delay and the actual switching thresholds of the buffer:

+1 jimmy xu over 2 years ago in reply to Clemens Ladisch

Prodigy 80 points

Thanks. The suggestion matches our internal discussion. Good suggestion.

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Pulse shaping logic device