SN54LS279 Datasheet - Motorola

SN54LS279 QUAD SET-RESET LATCH

SN54/74LS279 QUAD SET-RESET LATCH VCC 16 S1 15 R 14 Q 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 16 1 J SUFFIX CERAMIC CASE 620-09 TRUTH TABLE INPUT S1 L L X H H S2 L X L H H R L H H L H OUTPUT (Q) h H H L No Change 16 1 N SUFFIX PLASTIC CASE 648-08 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 .

SN54LS279-Motorola.pdf