Which of the following statements are correct (a) CMOS has a higher speed and smaller power than BJT. (b) CMOS ICs inputs should never be left unconnected as it may damage the device. (c) CMOS ICs with Schmitt trigger inputs are useful for better noise immunity. (d) CMOS is most popular logic family in VLSI Technology.?

(a), (c) and (d) are correct
(b), (c) and (d) are correct
(a), (b) and (c) are correct
(a), (b) and (d) are correct

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 2 : (b), (c) and (d) are correct

	BJT	CMOS
Input Power Loss	>0 (I_B > 0)	0 (I_G = 0)
Dropout voltage	More	Lesser than BJT
Noise	More	Less
Fabrication Area	More	Less
Total power loss	More	Lesser than BJT
Thermal Runaway	Present	Absent

Unused CMOS input pins must never be unconnected because they tend to float towards the dangerous region which is in the middle between V_DD and GND.
A CMOS Schmitt Trigger has the following advantages-

High input impedance, Low power consumption, even during transitions, High noise immunity, 0.7 V_cc typical.

4 views Answered 2022-09-04 04:29

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