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LS7212N Datasheet(PDF) 6 Page - LSI Computer Systems

Part # LS7212N
Description  PROGRAMMABLE DIGITAL DELAY TIMER
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Manufacturer  LSI [LSI Computer Systems]
Direct Link  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

LS7212N Datasheet(HTML) 6 Page - LSI Computer Systems

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7211N-062209-6
FIGURE 5. RC- Oscillator Connection
LS7212N
FIGURE 6. MULTI-TIMER WITH SINGLE CRYSTAL TIME-BASE
LS7212N
LS7211N
4
4
CLOCK
25pF
470k
5
4
10M
XTLO
XTLI
25pF
CLOCK
CRYSTAL
+V
1M
120VAC
200pF
4
8
CLOCK
LS7211N
VSS
VDD
3
FIGURE 7. DRIVING CLOCK INPUT FROM THE AC LINE
+V
LS7211N
FIGURE 8. DELAY EXTENSION BY CASCADING
*
*
TRIGGER
ƒ
1, 2
10-17
8
2
3
4
WB0-WB7
TRIG
CLOCK
A, B
9
Vss
8
LS7211N
*
*
1, 2
10-17
8
2
3
4
WB0-WB7
TRIG
CLOCK
A, B
9
OUT
Vss
8
18
18
* Connect for desired delay and mode
OUT
VDD
VDD
OUT
+V
V SS
10k
0.1µF
RC
3
LS7211N
VDD
+V
8
4
ƒ =
= 1kHz
1
10 x 10 x 0.1 x 10
3
-
-6
ƒ
5
RCS/CLKS


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