Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
All Engineering Dictionary Terms
Definition of "ECL" |
Emitter-coupled logic / [Emitter Coupled Logic] A type of digital logic using transistors that do not go into saturation, allowing the devices to operate faster [as it takes longer for the transistor to come out of saturation]. For more detail on switching speed, ECL circuit diagram and logic family comparisons see ECL IC Manufacturers. An ECL OR gate symbol is shown to the right. Note that most gates use differential inputs and outputs, although the I/O can be made into single ended lines too. The normal supply voltage level [Vee] is -5.2 volts as opposed to TTL logic which is 5 volts. However ECL also uses a Vcc of between 0 volts to 7 volts. Although ECL 'logic' gates function the same as TTL gates, the greater speed, differential un-saturated logic [analog] signals and impedance matching requirements impose a completely different design approach. / Emitter Coupled Logic, / In electronics, Emitter-coupled logic is a high-speed integrated circuit bipolar transistor logic family. Emitter-coupled logic uses an overdriven BJT differential amplifier with single-ended input and limited emitter current to avoid the saturated (fully on) region of operation and its slow turn-off behavior. As the current is steered between two legs of an emitter-coupled pair, ECL is sometimes called current-steering logic (CSL), current-mode logic (CML) or current-switch emitter-follower (CSEF) logic. / Emitter-coupled logic is a high-speed integrated circuit bipolar transistor logic family. ECL uses an overdriven BJT differential amplifier with single-ended input and limited emitter current to avoid the saturated fully on region of operation and its slow turn-off behaviour. / Wire gauge is a measurement of how large a wire is, either in diameter or cross sectional area. This determines the amount of electric current a wire can safely carry, as well as its electrical resistance and weight per unit of length. Wire gauge is applicable to both electrical and non-electrical wires, being important to electrical wiring and to structural cable. / See emitter-coupled logic. |
Please type any word or choose alphabet below... |
A
B
C
D
E
F
G
H
I
J
K
L
M N O P Q R S T U V W X Y Z 1 2 3 4 5 6 7 8 9 0 |