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74LS12 датащи(PDF) 2 Page - ON Semiconductor

номер детали 74LS12
подробное описание детали  LOW POWER SCHOTTKY
PDF  12 Pages
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производитель  ONSEMI [ON Semiconductor]
домашняя страница  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

74LS12 датащи(HTML) 2 Page - ON Semiconductor

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SN74LS122 SN74LS123
http://onsemi.com
2
SN74LS122 (TOP VIEW)
(SEE NOTES 1 THRU 4)
SN74LS123 (TOP VIEW)
(SEE NOTES 1 THRU 4)
NOTES:
1. An external timing capacitor may be connected between Cext and Rext/Cext (positive).
2. To use the internal timing resistor of the LS122, connect Rint to VCC.
3. For improved pulse width accuracy connect an external resistor between Rext/Cext and VCC with Rint open-circuited.
4. To obtain variable pulse widths, connect an external variable resistance between Rint/Cext and VCC.
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6
8
7
VCC
Rext/
Cext
NC
Cext
NC
Rint
Q
A1
A2
B1
B2
CLR
Q
GND
CLR Q
Q
Rint
2
Rext/
Cext
1
Cext
1Rext/
Cext
14
13
12
11
10
9
12345
6
7
16
15
8
VCC
1A
1Q
2Q
2B
2
CLR
2A
1B
1
CLR
1Q
2Q
2
Cext
GND
Q
Q
Q
Q
CLR
CLR
NC — NO INTERNAL CONNECTION.



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