SN74LS279A Quad /S-/R latches |

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Quad /S-/R latches

Quad /S-/R latches - SN74LS279A


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.


  • Package Options Include Plastic "Small Outline" Packages, Ceramic Chip Carriers and Flat Packages, and Plastic and Ceramic DIPs
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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Bits (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) 3-state output Operating temperature range (C)
SN74LS279A Order now LS     4.75     5.25     4     5     35     7     30     8     -0.4     No     0 to 70    
SN54LS279A Samples not available LS     4.75     5.25     4     5     35     7     22     8     -0.4     No     -55 to 125