Reset Supervisor
Reset Supervisor
Is there a chip that can monitor a reset line so if the line is active low for 1ms... it will latch low till a reset is given to it?
Re: Reset Supervisor
I suppose A JK flip flop with an RC network on the input would be the simplest implementation. This would work for "at least 1ms" and not "exactly 1ms". Short pulses cannot charge the C to the input threshold in time. Longer pulses allows the pin to charge to the threshold voltage.
Re: Reset Supervisor
You can use a Dual Retriggerable Resettable Monostable Multivibrator (One-Shot)
such has a 96L02 or equivalent.
such has a 96L02 or equivalent.
Re: Reset Supervisor
Wow. Sorry to interject, but I have never heard of the 96XX family of TTL. What difference does the 96 family have and were they specialty devices like military or something?dobrien wrote:You can use a Dual Retriggerable Resettable Monostable Multivibrator (One-Shot) such has a 96L02 or equivalent.
The reset latch could be so simple. Even a RS flip-flop would work, made from a pair of nand or nor gates, from a logic family that is compatible with your reset line.
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Re: Reset Supervisor
9600 series were popular in the 70s-80s. Were a line of common logic chips and were succeeded by the C-Mos chips. I believe they are still available in Asian markets. But I don't understand how a one shot would work as a latch?
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