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Digital questions-2

Written By 1 on Thursday, January 16, 2014 | 8:12 AM


A 0.01-F capacitor is recommended by TTL manufacturers for ________ the power supply.
decoupling
filtering
rectifying
grounding


7.
Why does the data sheet for the 7476 only give a minimum value for the clock pulse width (both HIGH and LOW)?
nominal value
best-case condition
worst-case condition


8.
Why is the Schmitt trigger needed in the 60-Hz TTL-level clock pulse generator?
to provide a triangle wave
to provide a sine wave
to provide a rounded pulse waveform
to provide a sharp pulse waveform

9.
The main concern when using a pull-down resistor is:
the low power dissipation of the resistor
it will keep a floating terminal LOW
the high power dissipation of the resistor
it will cause false triggering

10.
Look up the propagation delay from the clock to the output for the 7476. Are the HIGH-to-LOW and LOW-to-HIGH propagation delays the same?
yes
no, tPLH = 25 ns, tPHL = 40 ns
no, tPLH = 40 ns, tPHL = 25 ns
no, tPHL = 25 ns, tPLH = 40 ns

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