What are the advantages of TTL (transistor transistor logic)?

What are the advantages of TTL (transistor transistor logic)?
by

1 Answer

Answer :

To know about the advantages of TTL logic family, one should have a basic idea about RTL, DTL etc. Diode logic (DL) uses diodes to implement logical functions like AND and OR. But the disadvantage is that it can not perform NOT operation. As AND and OR are not complete functions by themselves, they can not perform several logic functions without NOT. Hence, there was a need for some device which can perform a NOT function as diodes can not. That device is a transistor. Then came the DTL which uses a transistor along with diodes. As a transistor can act as an inverter, NAND (NOT-AND) & NOR (NOT-OR) operations can be performed. But this logic uses several diodes which will slow down its operation. Due to the delay offered by them, the logic levels may sometimes change i. e. 0 t0 1 or 1 to 0.
by
selected by

Related questions

What are the types of TTL logic?

Description : What are the types of TTL logic?

Last Answer : 1. Open collector output 2. Totem-Pole Output 3. Tri-state output.

Which of the following is the fastest logic? (A) ECL (B) TTL (C) CMOS (D) LSI

Description : Which of the following is the fastest logic? (A) ECL (B) TTL (C) CMOS (D) LSI

Last Answer : (A) ECL

Which TTL logic gate is used for wired ANDing (A) Open collector output (B) Totem Pole (C) Tri state output (D) ECL gates

Description : Which TTL logic gate is used for wired ANDing (A) Open collector output (B) Totem Pole (C) Tri state output (D) ECL gates

Last Answer : Ans: A Open collector output.

The digital logic family which has the lowest propagation delay time is (A) ECL (B) TTL (C) CMOS (D) PMOS

Description : The digital logic family which has the lowest propagation delay time is (A) ECL (B) TTL (C) CMOS (D) PMOS

Last Answer : Ans: A The digital logic family which has the lowest propagation delay time is ECL (Lowest propagation delay time is possible in ECL because the transistors are used in difference amplifier configuration, in which they are never driven into saturation and thereby the storage time is eliminated).

Which of the following is the fastest logic (A) TTL (B) ECL (C) CMOS (D) LSI

Description : Which of the following is the fastest logic (A) TTL (B) ECL (C) CMOS (D) LSI

Last Answer : Ans: B ECL is the fastest logic family of all logic families. (High speeds are possible in ECL because the transistors are used in difference amplifier configuration, in which they are never driven into saturation and thereby the storage time is eliminated.

The digital logic family which has minimum power dissipation is (A) TTL (B) RTL (C) DTL (D) CMOS

Description : The digital logic family which has minimum power dissipation is (A) TTL (B) RTL (C) DTL (D) CMOS

Last Answer : (D) CMOS The digital logic family which has minimum power dissipation is CMOS. (CMOS being an unipolar logic family, occupy a very small fraction of silicon Chip area)

TTL logic family is most popularly used industries because it

Description : TTL logic family is most popularly used industries because it  1.provides greater operating speed 2.has a good fan in & fan out 3.has easy interface with other digital circuitry 4.all the above 

Last Answer : It is a basically a bipolar circuit which has TTL band hate fan fan out

State advantages and disadvantages of TTL

Description : State advantages and disadvantages of TTL

Last Answer : Advantages: 1. Easily compatible with other ICs 2. Low output impedance

In a logic circuit the NOR and NAND gate functions ____________. A. must be accomplished with a common base transistor arrangement B. are available in diode form C. are exact opposites with the same NOR and NAND inputs D. have output conditions that are exact opposites to the output condition for OR and AND, respectively

Description : In a logic circuit the NOR and NAND gate functions ____________. A. must be accomplished with a common base transistor arrangement B. are available in diode form C. are exact opposites with the ... . have output conditions that are exact opposites to the output condition for OR and AND, respectively

Last Answer : Answer: D

In a logic circuit, the NOT gate function _____________. A. does not alter a logical input B. serves to amplify a given signal level C. must be accomplished with a common collector transistor arrangement D. reverses an input logic condition

Description : In a logic circuit, the NOT gate function _____________. A. does not alter a logical input B. serves to amplify a given signal level C. must be accomplished with a common collector transistor arrangement D. reverses an input logic condition

Last Answer : Answer: D

A single transistor can be used to build which of the following digital logic gates : -

Description : A single transistor can be used to build which of the following digital logic gates : - a) AND gates b) OR gates c) NOT gates d) NAND gates

Last Answer : a

What is the full form of TTL ?

Description : What is the full form of TTL ?

Last Answer : TTL 's full form Transistor Transistor Logic.

Which one of the following fields of an IP header is NOT modified by a typical IP router? a. Checksum b. Source address c. Time to Live (TTL) d. Length

Description : Which one of the following fields of an IP header is NOT modified by a typical IP router? a. Checksum b. Source address c. Time to Live (TTL) d. Length

Last Answer : b. Source address

For which one of the following reasons does Internet Protocol (IP) use the time-to- live (TTL) field in the IP datagram header? a. Ensure packets reach destination within that time b. Discard packets that reach later than that time c. Prevent packets from looping indefinitely d. Limit the time for which a packet gets queued in intermediate routers.

Description : For which one of the following reasons does Internet Protocol (IP) use the time-to- live (TTL) field in the IP datagram header? a. Ensure packets reach destination within that time b. ... packets from looping indefinitely d. Limit the time for which a packet gets queued in intermediate routers.

Last Answer : c. Prevent packets from looping indefinitely

The number of network segments on which the datagram is allowed to travel before a router should discard it is called _______. A. Time to Live (TTL) B. Time to Die(TTD) C. self recognition D. both a and b

Description : The number of network segments on which the datagram is allowed to travel before a router should discard it is called _______. A. Time to Live (TTL) B. Time to Die(TTD) C. self recognition D. both a and b

Last Answer : A. Time to Live (TTL)

What are RTL, DTL, and TTL examples of?

Description : What are RTL, DTL, and TTL examples of?

Last Answer : Logic families.

____ Was more common year: a. CRT b. TTL c. Both A and B d. None of these

Description : ____ Was more common year: a. CRT b. TTL c. Both A and B d. None of these

Last Answer : b. TTL

List the different versions of TTL

Description : List the different versions of TTL

Last Answer : 1. TTL (Std.TTL) 2. LTTL (Low Power TTL) 3. HTTL (High Speed TTL) 4. STTL (Schottky TTL) 5. LSTTL (Low power Schottky TTL)

7.How does traceroute work? A. It uses an ICMP destination-unreachable message to elicit the name of a router. B. It sends a specially crafted IP packet to a router to locate the number of hops from the sender to the destination network. C. It uses a protocol that will be rejected by the gateway to determine the location. D. It uses the TTL value in an ICMP message to determine the number of hops from the sender to the router.

Description : 7.How does traceroute work? A. It uses an ICMP destination-unreachable message to elicit the name of a router. B. It sends a specially crafted IP packet to a router to locate the number of hops from ... the TTL value in an ICMP message to determine the number of hops from the sender to the router.

Last Answer : D. It uses the TTL value in an ICMP message to determine the number of hops from the sender to the router.

Which of following consume minimum power (A) TTL. (B) CMOS. (C) DTL. (D) RTL.

Description : Which of following consume minimum power (A) TTL. (B) CMOS. (C) DTL. (D) RTL.

Last Answer : Ans: B CMOS consumes minimum power as in CMOS one p-MOS & one n-MOS transistors are connected in complimentary mode, such that one device is ON & one is OFF.

The MSI chip 7474 is (A) Dual edge triggered JK flip-flop (TTL). (B) Dual edge triggered D flip-flop (CMOS). (C) Dual edge triggered D flip-flop (TTL). (D) Dual edge triggered JK flip-flop (CMOS).

Description : The MSI chip 7474 is (A) Dual edge triggered JK flip-flop (TTL). (B) Dual edge triggered D flip-flop (CMOS). (C) Dual edge triggered D flip-flop (TTL). (D) Dual edge triggered JK flip-flop (CMOS).

Last Answer : Ans: C MSI chip 7474 dual edge triggered D Flip-Flop.

The commercially available 8-input multiplexer integrated circuit in the TTL family is (A) 7495. (B) 74153. (C) 74154. (D) 74151.

Description : The commercially available 8-input multiplexer integrated circuit in the TTL family is (A) 7495. (B) 74153. (C) 74154. (D) 74151.

Last Answer : Ans: B MUX integrated circuit in TTL is 74153.

CMOS circuits consume power (A) Equal to TTL (B) Less than TTL (C) Twice of TTL (D) Thrice of TTL

Description : CMOS circuits consume power (A) Equal to TTL (B) Less than TTL (C) Twice of TTL (D) Thrice of TTL

Last Answer : Ans: B As in CMOS one device is ON & one is Always OFF so power consumption is low.

In standard TTL gates, the totem pole output stage is primarily used to

Description : In standard TTL gates, the totem pole output stage is primarily used to (A) increase the noise margin of the gate (B) decrease the output switching delay (C) facilitate a wired OR logic connection (D) increase the output impedance of the circuit

Last Answer : In standard TTL gates, the totem pole output stage is primarily used to decrease the output switching delay

TTL stand for :

Description : TTL stand for : A. Trigger Time Logic B. Traffic Time Logic C. Transistor Time Logic D. Transistor Transistor Logic

Last Answer : TTL stand for : Transistor Transistor Logic 

What is one of the primary advantages of the FET when compared to the bipolar transistor?

Description : What is one of the primary advantages of the FET when compared to the bipolar transistor?

Last Answer : High input impedance.

Explain how a Programmable Logic Controller (PLC) is different from an ordinary personal computer. Also write the advantages and disadvantages of PLC.

Description : Explain how a Programmable Logic Controller (PLC) is different from an ordinary personal computer. Also write the advantages and disadvantages of PLC.

Last Answer : PLC PC 1 It has embedded processor with limited computing power It has a CPU with high computing power  2 Design of PLC is for reliable operation in industrial ... 3) Use of PLCs may be restricted in some high heat, vibration environment not suitable for electronic circuit