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SN74LS221 View Datasheet(PDF) - ON Semiconductor

Part NameDescriptionManufacturer
SN74LS221 Dual Monostable Multivibrators with Schmitt−Trigger Inputs ON-Semiconductor
ON Semiconductor ON-Semiconductor
SN74LS221 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
SN74LS221
AC WAVEFORMS
tW(in)
B INPUT
1.3 V
3V
0V
60 ns
3V
CLEAR
tPLH
tPHL
0V
Q OUTPUT
VOH
VOL
tPHL
tPLH
VOH
Q OUTPUT
A INPUT IS LOW.
VOL
TRIGGER FROM B, THEN CLEAR — CONDITION 1
3V
B INPUT
0V
60 ns
3V
1.3 V
CLEAR
0V
VOH
Q OUTPUT
VOL
A INPUT IS LOW.
TRIGGER FROM B, THEN CLEAR — CONDITION 2
3V
B INPUT
50 ns
0
ts
0V
CLEAR
3V
0V
TRIGGERED
Q OUTPUT
VOH
VOL
NOT TRIGGERED
tW(out)
A INPUT IS LOW.
CLEAR OVERRIDING B, THEN TRIGGER FROM B
B INPUT
3V
0V
50 ns
50 ns
CLEAR
1.3 V
3V
0V
Q OUTPUT
VOH
VOL
A INPUT IS LOW.
TRIGGERING FROM POSITIVE TRANSITION OF CLEAR
Figure 1.
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