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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