【實用書籍app】Logic Circuits|最夯免費app

TTL and CMOS circuits is the basic digital circuits, and also constitute the basis of the digital system. TTL circuits, limit operating voltage is 7V, the normal operating voltage is 4.5 to 5.5V. The 54 series generally military general in -55-125 ° C working temperature. 74 series general industrial products or products for civilian use, the operating voltage is 4.75 ~ 5.25V industrial products operating temperature range is -45 to 85 ° C, a civilian products is generally 0 to 70 ° C temperature. TTL high level requirements greater than 2.4V, low requirements of less than 0.7V. Level open collector output the highest voltage up to 30V. And TTL circuit output drive capacity greater than CMOS circuits. Operating temperature is mainly associated with the product package types. CMOS circuits, 40xx and 45xx series, general operating voltage ~~ 18V normal operating voltage is 5 ~~ 15V. The working temperature and package types, divided into military products, industrial products, and products for civilian use. The CMOS circuit input current is very small and generally uA extremely. Generally a CMOS circuit can drive dozens of CMOS gate. I'm electronics enthusiasts, and particularly fond of digital circuits.54/74 and the 4000 circuit is relatively simple, but do not need processor circuit, or as a peripheral to the processor is also very useful.This is the first application of a digital circuit. You can put you to the Datasheet easily print, or through Email sent.Follow-up will be on-line assembly language and microcontroller applications. I hope you will like it.

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