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LS7211 Datasheet(PDF) 6 Page - LSI Computer Systems

Part # LS7211
Description  PROGRAMMABLE DIGITAL DELAY TIMER
PDF  8 Pages
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Manufacturer  LSI [LSI Computer Systems]
Direct Link  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

LS7211 Datasheet(HTML) 6 Page - LSI Computer Systems

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7211-102297-6
+V
V SS
10K
.1µF
RC
3
LS7211
V DD
+V
8
4
ƒ =
1
10 X 10
X .1 X 10
= 1KHz
3
-6
ƒ
5
RCS/CLKS
LS7212
FIGURE 6.
MULTI-TIMER WITH SINGLE CRYSTAL TIME-BASE
LS7212
LS7211
4
4
CLOCK
25pF
470K
5
4
10M
XTLO
XTLI
25pF
CLOCK
CRYSTAL
+V
LS7211
FIGURE 8. DELAY EXTENSION BY CASCADING
*
*
TRIGGER
ƒ
1,2
10-17
8
2
3
4
WB0-WB7
TRIG
CLOCK
A,B
OUT
9
Vss
8
LS7211
*
*
1,2
10-17
8
2
3
4
WB0-WB7
TRIG
CLOCK
A,B
OUT
9
Vss
8
18
18
* Connect for desired delay and mode
OUT
V DD
V DD
+V
1M
120VAC
200pF
4
8
CLOCK
LS7211
V SS
V DD
3
FIGURE 7. DRIVING CLOCK INPUT FROM THE AC LINE
FIGURE 5. RC- Oscillator Connection



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