Digital Electronics-Integrated Circuit Technologies
Digital Electronics-Integrated Circuit Technologies
11. The active switching element used in all TTL circuits is the ________.
- bipolar junction transistor (BJT)
- field-effect transistor (FET)
- metal-oxide semiconductor field-effect transistor (MOSFET)
- unijunction transistor (UJ)
12. An open-collector output requires ________.
- a pull-down resistor
- a pull-up resistor
- no output resistor
- an output resistor
13. Most TTL logic used today is some form of ________.
- Schottky TTL
- tristate TTL
- low-power TTL
- open-collector TTL
14. One output structure of a TTL gate is often referred to as a ________.
- totem-pole arrangement
- diode arrangement
- JBT arrangement
- base, emitter, collector arrangement
15. 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
17. TTL is alive and well, particularly in ________.
- industrial applications
- educational applications
- military applications
- commercial applications
18. PMOS and NMOS circuits are used largely in ________.
- MSI functions
- LSI functions
- diode functions
- TTL functions
19. 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 ________.
- 5.5 mW
- 5.5 W
- 5 mW
- 1.1 mW
20. Which is not a precaution for handling CMOS?
- Devices should be placed with pins down on a grounded surface, such as a metal plate.
- All tools, test equipment, and metal workbenches should be earth grounded.
- CMOS devices should not be inserted into sockets or PC boards with the power on.
- Wear wool clothes at all times.