SN74LS221NG ON Semiconductor, SN74LS221NG Datasheet - Page 6

• Manufacturer Part Number: SN74LS221NG
• Manufacturer: ON Semiconductor

Specifications of SN74LS221NG

• Logic Family: LS
• High Level Output Current: -400uA
• Low Level Output Current: 8mA
• Quiescent Current: 11uA
• Number Of Elements: 2
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (typ): 5V
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Technology: Bipolar
• Abs. Propagation Delay Time: 80ns
• Operating Supply Voltage (min): 4.75V
• Lead Free Status / RoHS Status: Compliant

B INPUT
CLEAR
Q OUTPUT
Q OUTPUT
A INPUT IS LOW.
B INPUT
CLEAR
Q OUTPUT
A INPUT IS LOW.
B INPUT
CLEAR
Q OUTPUT
A INPUT IS LOW.
B INPUT
CLEAR
Q OUTPUT
A INPUT IS LOW.
TRIGGERED
NOT TRIGGERED
TRIGGERING FROM POSITIVE TRANSITION OF CLEAR
TRIGGER FROM B, THEN CLEAR — CONDITION 1
TRIGGER FROM B, THEN CLEAR — CONDITION 2
CLEAR OVERRIDING B, THEN TRIGGER FROM B
≥ 50 ns
t
≥ 50 ns
W(in)
≥ 60 ns
≥60 ns
t
PLH
t
PHL
http://onsemi.com
AC WAVEFORMS
1.3 V
Figure 1.
1.3 V
1.3 V
6
≥ 50 ns
t
PHL
t
PLH
≥ 0
t
W(out)
t
s
3 V
0 V
3 V
0 V
V
V
V
V
3 V
0 V
3 V
0 V
V
V
3 V
0 V
3 V
0 V
V
V
3 V
0 V
3 V
0 V
V
V
OH
OL
OH
OL
OH
OL
OH
OL
OH
OL