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74LS221 数据表(PDF) 6 Page - ON Semiconductor

部件名 74LS221
功能描述  LOW POWER SCHOTTKY
PDF  8 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

74LS221 数据表(HTML) 6 Page - ON Semiconductor

  74LS221 Datasheet HTML 1Page - ON Semiconductor 74LS221 Datasheet HTML 2Page - ON Semiconductor 74LS221 Datasheet HTML 3Page - ON Semiconductor 74LS221 Datasheet HTML 4Page - ON Semiconductor 74LS221 Datasheet HTML 5Page - ON Semiconductor 74LS221 Datasheet HTML 6Page - ON Semiconductor 74LS221 Datasheet HTML 7Page - ON Semiconductor 74LS221 Datasheet HTML 8Page - ON Semiconductor  
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SN74LS221
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6
AC WAVEFORMS
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.
tW(in)
≥60 ns
tPLH
tPHL
tPLH
tPHL
1.3 V
3 V
0 V
3 V
0 V
VOH
VOL
VOH
VOL
≥60 ns
1.3 V
1.3 V
3 V
0 V
3 V
0 V
VOH
VOL
≥ 50 ns
≥ 0
ts
3 V
0 V
3 V
0 V
VOH
VOL
3 V
0 V
3 V
0 V
VOH
VOL
TRIGGERED
NOT TRIGGERED
≥50 ns
≥50 ns
B INPUT
CLEAR
Q OUTPUT
A INPUT IS LOW.
tW(out)
TRIGGER FROM B, THEN CLEAR — CONDITION 1
TRIGGER FROM B, THEN CLEAR — CONDITION 2
CLEAR OVERRIDING B, THEN TRIGGER FROM B
TRIGGERING FROM POSITIVE TRANSITION OF CLEAR
Figure 1.



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