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Q.1
It is best not to leave unused TTL inputs unconnected (open) because of TTL's ________.
noise sensitivity
low-current requirement
open-collector outputs
tristate construction
Q.2
Which is not an output state for tristate logic?
HIGH
LOW
High-Z
Low-Z
Q.3
TTL is alive and well, particularly in ________.
industrial applications
educational applications
military applications
commercial applications
Q.4
Which equation is correct?
VNL = VIL(max) + VOL(max)
VNH = VOH(min) + VIH(min)
VNL = VOH(min) – VIH(min)
VNH = VOH(min) – VIH(min)
Q.5
Which logic family combines the advantages of CMOS and TTL?
BiCMOS
TTL/CMOS
ECL
TTL/MOS
Q.6
The nominal value of the dc supply voltage for TTL and CMOS is ________.
+3 V
+5 V
+9 V
+12 V
Q.7
A TTL NAND gate with IIL(max) of –1.6 mA per input drives eight TTL inputs. How much current does the drive output sink?
–12.8 mA
–8 mA
–1.6 mA
–25.6 mA
Q.8
An open-drain gate is the CMOS counterpart of ________.
an open-collector TTL gate
a tristate TTL gate
a bipolar junction transistor
an emitter-coupled logic gate
Q.9
The greater the propagation delay, the ________.
lower the maximum frequency
higher the maximum frequency
maximum frequency is unaffected
minimum frequency is unaffected
Q.10
In a TTL circuit, if an excessive number of load gate inputs are connected, ________.
VOH(min) drops below VOH
VOH drops below VOH(min)
VOH exceeds VOH(min)
VOH and VOH(min) are unaffected
Q.11
Which transistor element is used in CMOS logic?
FET
MOSFET
Bipolar
Unijunction
Q.12
For a CMOS gate, which is the best speed-power product?
1.4 pJ
1.6 pJ
2.4 pJ
3.3 pJ
Q.13
Which is not a MOSFET terminal?
Gate
Drain
Source
Base
Q.14
The active components in an IC are ___________.
Resistors
Capacitors
Transistors and diodes
None of the above
Q.15
Operational amplifiers use ___________.
Linear ICs
Digital ICs
Both linear and digital ICs
None of the above
Q.16
An IC has ___________ size
Very large
Large
Extremely small
None of the above
Q.17
___________ ICs are the most commonly used
Thin films
Monolithic
Hybrid
None of the above
Q.18
The most popular form of IC package is ___________.
DIL
Flatpack
TO-5
None of the above
Q.19
Digital ICs process ___________
Linear signals only
Digital signals only
Both digital and linear signals
None of the above
Q.20
ICs are used in ___________
Linear devices only
Digital devices only
Both linear and digital devices
None of the above
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