SN74LS279A数据手册集成电路（IC）的锁存器规格书PDF

描述 Description

The ’279 offers 4 basic S\\-R\\ flip-flop latches in one 16-pin, 300-mil package. Under conventional operation, the S\\-R\\ inputs are normally held high. When the S\\ input is pulsed low, the Q output will be set high. When R\\ is pulsed low, the Q output will be reset low. Normally, the S\\-R\\ inputs should not be taken low simultaneously. The Q output will be unpredictable in this condition.

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