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Part Name
Description
LS7211N-S View Datasheet(PDF) - LSI Corporation
Part Name
Description
Manufacturer
LS7211N-S
PROGRAMMABLE DIGITAL DELAY TIMER
LSI Corporation
LS7211N-S Datasheet PDF : 8 Pages
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8
ELECTRICAL CHARACTERISTICS (Voltages referenced to Vss) (Con’t)
Characteristic
SYMBOL V
DD
Min Max Min Max
Switching Characteristics
(See Fig. 3)
3.0
-
1.8
-
1.4
RC Oscillator Frequency
f
osc
10.0
-
4.5
-
3.4
18.0
-
8.0
-
4.0
3.0
-
2.6
-
2.0
External Clock or
f
ext
10.0
-
5.3
-
4.0
Crystal Oscillator
18.0 -
5.9
-
4.5
Frequency
3.0
-
7.2
-
5.5
f
ext
10.0
-
16.0
-
12.8
18.0
-
15.9
-
13.0
TRIG Set-Up Time
A, B Set-Up Time
WB0 - WB7 Set-Up Time
Clock to Out Delay
t
1
-
39
-
50
-
t
2
-
0
-
0
-
t
3
-
0
-
0
-
3.0
-
284
-
375
t
4
10.0
-
98
-
130
18.0
-
87
-
115
+V
A1
500k
+V
MODE
REG
B2
500k
EDGE
DETECT
TRIG 18
500k
LATCH
Min Max
-
1.05
-
2.6
-
3.0
-
1.52
-
3.0
-
3.5
-
4.2
-
9.7
-
9.1
66
-
0
-
0
-
-
495
-
172
-
152
CONTROL
LOGIC
Unit Condition
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
-
For prescale
factor S = 1 or 3,000
or 3,600
S = 32,768
or
32,768 x 60
ns -
ns -
ns -
ns
ns C
L
= 50pF
ns
BUF
9
OUT
RESET 7
CLOCK/RC/XTLI 4
XTLO
(
LS7212N
)
5
500k
CLOCK
OSC
MUX
LATCH/TIMER
8
10-17 WB7-WB0
500k
(8)
PRESCALER
RCS/CLKS (LS7211N)
5
500k
PSCLS 6
+V
1M
1M
3-STATE
DECODER
+V
-V
(
Gnd
)
3 V
DD
8 V
SS
7211N-072009-4
FIGURE 2. LS7211N / LS7212N BLOCK DIAGRAM
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