E6C-2012: Integrated circuits: TTL digital integrated circuits; CMOS digital integrated circuits; gates
E6C01-2012:
What is the recommended power supply voltage for TTL series integrated circuits?
5 volts
12 volts
1.5 volts
13.6 volts
E6C02-2012:
What logic state do the inputs of a TTL device assume if they are left open?
A logic-high state
A logic-low state
The device becomes randomized and will not provide consistent high or low-logic states
Open inputs on a TTL device are ignored
E6C03-2012:
Which of the following describes tri-state logic?
Logic devices with 0, 1, and high impedance output states
Logic devices that utilize ternary math
Low power logic devices designed to operate at 3 volts
Proprietary logic devices manufactured by Tri-State Devices
E6C04-2012:
Which of the following is the primary advantage of tri-state logic?
Ability to connect many device outputs to a common bus
Low power consumption
High speed operation
More efficient arithmetic operations
E6C05-2012:
Which of the following is an advantage of CMOS logic devices over TTL devices?
Lower power consumption
Differential output capability
Lower distortion
Immune to damage from static discharge
E6C06-2012:
Why do CMOS digital integrated circuits have high immunity to noise on the input signal or power supply?
The input switching threshold is about one-half the power supply voltage
Larger bypass capacitors are used in CMOS circuit design
The input switching threshold is about two times the power supply voltage
Input signals are stronger
E6C07-2012:
In Figure E6-5, what is the schematic symbol for an AND gate?
1
2
3
4
E6C08-2012:
In Figure E6-5, what is the schematic symbol for a NAND gate?
2
1
3
4
E6C09-2012:
In Figure E6-5, what is the schematic symbol for an OR gate?
3
2
4
6
E6C10-2012:
In Figure E6-5, what is the schematic symbol for a NOR gate?
4
1
2
3
E6C11-2012:
In Figure E6-5, what is the schematic symbol for the NOT operation (inverter)?
5
2
4
6
E6C12-2012:
What is BiCMOS logic?
An integrated circuit logic family using both bipolar and CMOS transistors
A logic device with two CMOS circuits per package
An FET logic family based on bimetallic semiconductors
A logic family based on bismuth CMOS devices
E6C13-2012:
Which of the following is an advantage of BiCMOS logic?
It has the high input impedance of CMOS and the low output impedance of bipolar transistors
Its simplicity results in much less expensive devices than standard CMOS
It is totally immune to electrostatic damage
All of these choices are correct
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