(a) From Table 8-6, determine the noise margins when a 74LS device is driving a 74ALS input....

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(a) From Table 8-6, determine the noise margins when a 74LS device is driving a 74ALS input.

(b) Repeat part (a) for a 74ALS driving a 74LS.

(c) What will be the overall noise margin of a logic circuit that uses 74LS and 74ALS circuits in combination?

(d) A certain logic circuit has VIL(max) = 450 mV. Which TTL series can be used with this circuit?


TABLE 8-6 Typical TTL series characteristics. 74S Performance ratings Propagation delay (ns) Power

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Digital Systems Principles And Application

ISBN: 9780134220130

12th Edition

Authors: Ronald Tocci, Neal Widmer, Gregory Moss

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