SN74LS279AD Datasheet PDF - TI

●The SN74LS279AD is a Quad/S-/R Latch 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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