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SN74LS221 Fiches technique(PDF) 10 Page - Texas Instruments

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No de pièce SN74LS221
Description  DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
PDF  25 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

SN74LS221 Fiches technique(HTML) 10 Page - Texas Instruments

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SN54221, SN54LS221, SN74221, SN74LS221
DUAL MONOSTABLE MULTIVIBRATORS
WITH SCHMITT TRIGGER INPUTS
SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004
10
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
B†
CLR
Q
Q
3 V
3 V
0 V
0 V
VOH
VOH
VOL
VOL
tw
≥ 60 ns
tPLH
tPHL
tPHL
tPLH
CONDITION 1: TRIGGER FROM B, THEN CLR
B†
CLR
Q
3 V
3 V
0 V
0 V
VOH
VOL
≥ 60 ns
CONDITION 2: TRIGGER FROM B, THEN CLR
B†
CLR
Q
3 V
3 V
0 V
0 V
VOH
VOL
≥ 50 ns
CONDITION 3: CLR OVERRIDING B, THEN TRIGGER FROM B
tsu
≥ 0
tw
Triggered
Not Triggered
† A is low.
Figure 1. Switching Characteristics



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