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 SC...
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 = 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 VCC TA IOH IOL Supply Voltage Operating Ambient Temperature Range Output Current — High Output Current — Low Parameter 54 74 54 74 54, 74 54 74 Min 4.5 4.75 – 55 0 Typ 5.0 5.0 25 25 Max 5.5 5.25 125 70 – 0.4 4.0 8.0 Unit V °C mA mA
FAST AND LS TTL DATA
http://www.Datasheet4U.com
5-452
SN54/74LS279
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage 54 Input LOW Voltage 74 Input Clamp Diode Voltage 54 Output HIGH Voltage 74 54, 74 VOL Output LOW Voltage 74 Input HIGH Current 0.1 Input LOW Current Short Circuit Current (Note 1) Power Supply Current – 20 – 0.4 – 100 7.0 0.35 0.5 20 IIH IIL IOS ICC V µA mA mA mA mA 2.7 3.5 0.25 0.4 V V 2.5 – 0.65 3.5 0.8 – 1.5 V V Min 2.0 0.7 V Typ Max Unit...
