MC14468 データシートの表示（PDF） - Motorola => Freescale
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MC14468 Datasheet PDF : 8 Pages
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Freescale Semiconductor, Inc.
TIMING PARAMETERS (C = 0.1 µF, Rbias = 8.2 MΩ, VDD = 9.0 V, TA = 25°C, See Figure 6)
Characteristics
Symbol
Min
Typ#
Max
Oscillator Period
No Smoke
Smoke
tCI
1.34
1.67
2.0
32
40
48
Oscillator Rise Time
tr
8.0
10
12
Horn Output
(During Smoke)
On Time
Off Time
PWon
PWoff
120
160
208
60
80
104
LED Output
Between Pulses
tLED
32
40
48
On Time
PWon
8.0
10
12
Horn Output
(During Low Battery)
On Time
ton
Between Pulses
toff
8.0
10
12
32
40
48
# Data labelled “Typ’’ is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
MC14468
Units
s
ms
ms
ms
ms
s
ms
ms
s
VDD VDD
TO OTHER UNITS
I/O
2
FEEDBACK
8
45 K
3
LOW V SET
DETECT
1
COMPARATOR OUT
13
LOW BATTERY
– COMPARATOR
+
280 K
+
–
DETECT
COMPARATOR
ALARM
LOGIC
POWER–ON
RESET
325 K
4
STROBE OUT
15
DETECT INPUT
GUARD
AMP
LO–Z
VDD
HI–Z
+
14
16
–
OSC
AND
TIMING
12
7
11
SILVER
10
BRASS
5
LED
VDD = PIN 6
VSS = PIN 9
VDD
Figure 1. Block Diagram
Motorola Sensor Device Data For More Information On This Product,
3
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