The characteristics of ECL are as follows:
(1) The Logic levels are normally 8V (Logic 1) and -1.7 V (Logic O).
(2) The transistors never saturate, it, storage delay in ECL circuits is eliminated, and hence switching speed is very high.
(3) Because of the low noise margin, 250 milli-volt, ECL circuits are not reliable in heavy industrial environments.
(4) An ECH logic block usually produces an O/P and its complement. This eliminates need for invertors.
(5) Fan-outs are typically around 25, owing to the loco impedence mitter- follower O/PS.
(6) Typical power dissipation for a basic ECH gate is 40 ml somewhat higher than the 74AS series.
(7) The total current flow in an ECH circuit remains relatively constant regardlers of its logic states.
Study the circuit and let me know if ECLis fastest or not and if yes then why?
(1) The Logic levels are normally 8V (Logic 1) and -1.7 V (Logic O).
(2) The transistors never saturate, it, storage delay in ECL circuits is eliminated, and hence switching speed is very high.
(3) Because of the low noise margin, 250 milli-volt, ECL circuits are not reliable in heavy industrial environments.
(4) An ECH logic block usually produces an O/P and its complement. This eliminates need for invertors.
(5) Fan-outs are typically around 25, owing to the loco impedence mitter- follower O/PS.
(6) Typical power dissipation for a basic ECH gate is 40 ml somewhat higher than the 74AS series.
(7) The total current flow in an ECH circuit remains relatively constant regardlers of its logic states.
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