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74LS279J
SN54/74LS279 QUAD SET-RESET LATCH VCC 16 S1 15 R Q 14 13 S1 12 S2 11 R 10 Q 9 QUAD SET-RESET LATCH LOW POWER SCHOTTKY 1 R 2 S1 3 S2 4 Q 5 R 6 S1 7 Q 8 GND J SUFFIX CERAMIC CASE 620-09 16 TRUTH TABLE INPUT 1 S1 S2 R OUTPUT (Q) L L X H H L X L H H L H H L H h H H L No Change N SUFFIX PLASTIC CASE 648-08 16 1 L = LOW Voltage Level H = HIGH Voltage Level X = Don’t Care h = The output is HIGH as long as h = S1 or S2 is LOW. If all inputs go h = HIGH simultaneously, the output h = state is indeterminate; otherwise, h = it follows the Truth Table 16 1 D SUFFIX SOIC CASE 751B-03 ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 74 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient Temperature Range 54 74 – 55 0 25 25 125 70 °C IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 74 4.0 8.0 mA FAST AND LS TTL DATA 5-1
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