Logic levels
What is the standard logic LOW voltage level for a TTL device?
What does TTL stand for
Transistor-Transistor Logic
What does CMOS stand for?
Complementary metal oxide-semiconductor
What is a T flip-flop
Toggle
What is a common application of TTL logic circuits?
In basic digital logic gates and control circuits
What voltage range represents a logic HIGH in CMOS logic
3.5V to 5V
What type of transistor used in TTL logic gates?
Bipolar Junction transistor
They only consume power during switching
Which logic family generally operates faster: TTL or CMOS?
TTL
What is a major advantage of CMOS logic in battery-operated devices?
Low power consumption
What does VOH stand for in TTL or CMOS logic levels?
output voltage high
What is the typical supply voltage for TTL devices?
5V
What type of transistors are used in CMOS circuits.
What logic family uses less power at low switching frequencies?
CMOS
Which logic family is preferred for high-speed communication circuits?
TTL or advanced CMOS variants
In logic circuits, what is the purpose of a noise margin?
To ensure reliable logic levels recognition despite electrical noise
What is fan-out in TTL logic circuits
The number of standard inputs a TTL output can drive
What is the typical input impedance of CMOS devices.
Very high, typically in the megaohms.
What issue can arise when interfacing TTL output to CMOS input directly?
Insufficient voltage level for CMOS HIGH input
In mixed-logic systems, why is voltage compatibility important?
To prevent logic levels misinterpretation or damage
What is the typical input voltage threshold that separates HIGH and LOW
1.4V
What distinguishes a Schottky TTL gate from a standard TTL gate?
Reduced switching time due to Schottky diodes
Why is it important not to leave CMOS inputs floating.
What is one way to interface a TTL output to a CMOS input reliably?
To use a pull-up resistor or a CMOS-compatible TTL gate
What logic family would you choose for a high-noise industrial environment?
TTL, due to better noise margins