What is the fastest logic family?
Emitter-coupled-logic (ECL)
Emitter-coupled-logic (ECL) is a BJT logic family that is generally considered the fastest logic available.
Which logic family provides high speed?
TTL has an extensive list of digital functions and is currently the most popular logic family. ECL is used in systems requiring high-speed operations.
Which logic gate is fastest of all logic families?
Explanation: ECL is the fastest of all the logic families because of the emitters of many transistors are coupled together which results in the highest transmission rate.
Which logic family has high propagation delay?
CMOS is the standard logic family used in most ICs except in specialized applications. Compared to TTL and its sub-families, ECL is a much faster architecture with propagation delay reaching ~1 ns, and it was widely used in computing architecture for some time.
Which logic family has very good noise immunity?
Which of the following logic families has the highest noise immunity?…Exercise :: Digital Computer Electronics – Section 1.
| A. | RTL |
|---|---|
| B. | DTL |
| C. | TTL |
| D. | HTL |
| E. | None of the above |
What is CMOS logic family?
CMOS (complementary metal-oxide-semiconductor) technology is used predominantly to create digital circuitry. The fundamental building blocks of CMOS circuits are P-type and N-type MOSFET transistors. CMOS technology employs two types of transistor: n-channel and p-channel. …
Which logic family consumes least power?
Detailed Solution
| Logic Family | Advantages |
|---|---|
| Complementary metal-oxide-semiconductor (CMOS) | 1. Lowest power consumption 2. Used in all microcomputer chips today. 3. Most common logic family. |
| Transistor-transistor logic (TTL) | 1. Earliest developed. 2. Most rugged. 3. Least susceptible to electrical damage. |
Which logic family has shortest propagation delay?
5. Which of the following logic families has the shortest propagation delay? Explanation: AS-TTL (Advanced Schottky) has a maximum clock frequency that is 105 MHz. So, the propagation delay will be given by 1/105 sec which is the lowest one.
Is known as fastest switching logic family?
Emitter-coupled-logic (ECL) is a BJT logic family that is generally considered the fastest logic available.
Which family has highest switching speed?
Emitter-coupled-logic (ECL): Emitter-coupled-logic (ECL) is a BJT logic family that is generally considered the fastest logic available. ECL achieves its high-speed operation by employing a relatively small voltage swing and preventing the transistors from entering the saturation region.
Why is SSTL important for high speed memory?
This is critical, because SSTL logic devices commonly contain parasitic and protection diodes between VDDQ and other supply voltages, which can be damaged if the VDDQ supply sinks current through them during start-up. Additionally, high speed memory cells switch states rapidly.
What happens when a SSTL circuit generates a 0?
When the SSTL logic circuit generates a 0, an active pull-down device sinks current from the termination rail and the termination supply acts like a conventional supply voltage, sourcing the required current to maintain the desired termination voltage.
How many termination classes does SSTL _ 2 support?
SSTL_2 and SSTL_18 reference a voltage that is exactly VDDQ/2 (1.25V and .9V respectively). SSTL_3 and SSTL_2 support two termination classes (50 ohm or 25 ohm load). SSTL_18 only supports one (25 ohm load).