Part Number: SN74LS240
SN74LS240NS shows hysteresis on the datasheet but it doesn't specify its threshold voltage.
Could you please provide each high→low and low→high threshold voltage?
The VIL or VIH are listed in the electrical characteristics section of the datasheet shown below.
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In reply to Karan Kotadia:
Thanks for your quick reply.
In accordance to datasheet, it shows that hysteresis voltage is 0.4V(typ).
So I think there is actual threshold voltage for each Low→High/High→Low which should be VT+ − VT-−=0.4V.
Is it possible to provide the actual threshold voltage if you have?
In reply to Shota Mago:
The datasheet specifies the hysteresis, but not the absolute voltage of the thresholds. They can be anywhere between VIL and VIH.
In reply to Clemens Ladisch:
You should never be operating near the threshold voltages. The VIH and VIL specs I have given is what you should conform to when switching on the device. The hysteresis will help if the input signal has a slow rising or falling edge as the device will not falsely switch or oscillate at the output.
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