VDD
VDD
R
tw
Rs
Rs
Vout
C
Useful as Pushbutton/Keyboard Debounce Circuit.
Figure 4. Monostable Multivibrator
C
tw
Vout
R
VDD
tw = RC IN VT+
1
f
R
t1
t2
C
[ VT)
* t1 RC ln VT–
ƪǒ Ǔǒ Ǔƫ [ VDD – VT–
* t2 RC ln VDD – VT)
[1
f
RC ln
VDD – VT–
VDD – VT)
VT)
VT –
& *t1 + t2 tPHL + tPLH
Figure 5. Astable Multivibrator
C
Vin
R
Vin
+ EDGE
– EDGE
– EDGE
+ EDGE
VDD
tw
VDD
tw = RC ln VT+
Useful as an edge detector circuit.
Figure 7. Differentiator
Vin
R
A
Vout
C
VDD
Vin VT+
VSS
VDD
VT+
A
VSS
VDD
Vout VT+
VSS
Useful in discriminating against short pulse durations.
Figure 6. Integrator
C
Vin
R
C
R
C
R
Figure 8. Positive Edge Time Delay Circuit
MC14106B
258
MOTOROLA CMOS LOGIC DATA