Integrated Circuit Technologies Questions and Answers

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Q11
The active switching element used in all TTL circuits is the ________.
  • A bipolar junction transistor (BJT)
  • B field-effect transistor (FET)
  • C metal-oxide semiconductor field-effect transistor (MOSFET)
  • D unijunction transistor (UJ)
Answer: Option A
Q12
An open-collector output requires ________.
  • A a pull-down resistor
  • B a pull-up resistor
  • C no output resistor
  • D an output resistor
Answer: Option B
Q13
Most TTL logic used today is some form of ________.
  • A Schottky TTL
  • B tristate TTL
  • C low-power TTL
  • D open-collector TTL
Answer: Option A
Q14
One output structure of a TTL gate is often referred to as a ________.
  • A totem-pole arrangement
  • B diode arrangement
  • C JBT arrangement
  • D base, emitter, collector arrangement
Answer: Option A
Q15
It is best not to leave unused TTL inputs unconnected (open) because of TTL's ________.
  • A noise sensitivity
  • B low-current requirement
  • C open-collector outputs
  • D tristate construction
Answer: Option A
Q16
Which is not an output state for tristate logic?
  • A HIGH
  • B LOW
  • C High-Z
  • D Low-Z
Answer: Option D
Q17
TTL is alive and well, particularly in ________.
  • A industrial applications
  • B educational applications
  • C military applications
  • D commercial applications
Answer: Option B
Q18
PMOS and NMOS circuits are used largely in ________.
  • A MSI functions
  • B LSI functions
  • C diode functions
  • D TTL functions
Answer: Option B
Q19
If ICCH is specified as 1.1 mA when VCC is 5 V and if the gate is in a static (noncharging) HIGH output state, the power dissipation (PD) of the gate is ________.
  • A 5.5 mW
  • B 5.5 W
  • C 5 mW
  • D 1.1 mW
Answer: Option A
Q20
Which is not a precaution for handling CMOS?
  • A Devices should be placed with pins down on a grounded surface, such as a metal plate.
  • B All tools, test equipment, and metal workbenches should be earth grounded.
  • C CMOS devices should not be inserted into sockets or PC boards with the power on.
  • D Wear wool clothes at all times.
Answer: Option D

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