MC14568 Freescale Semiconductor, MC14568 Datasheet - Page 7

• Manufacturer Part Number: MC14568
• Description: Low-Power CMOS Ionization Smoke Detector
• Manufacturer: Freescale Semiconductor

Sensors
Freescale Semiconductor
9.0 V
To Other
Units
1.0 µF
NOTE 1
NOTE 1: The low voltage set point can be tailored to customer’s requirement with the use of an external resistor.
NOTE 2: The sensitivity adjustment set point can be tailored to the customer’s requirement during the timer
NOTE 3: The Smoke Reference set point can be tailored to the customer’s requirement with the use of an
Timer
Mode
mode can with the use of an external resistor.
external resistor.
8.2 M
330
50 k
1
2
3
4
5
6
7
8
Figure 5. MC14568 Typical Application Diagram
NOTE 2
TIMO
I/O
LOW V
TIMSTRT
LED
VDD
TIMING RES
FDBCK
SMK_REF
1 M
HORN 2
HORN 1
LO_Z
HI_Z
OSC
DET
VSS
16
15
14
13
12
11
10
9
0.1 µF
1.5 M
220 k
1 M
Ionization
Chamber
0.001 µF
Piezo
NOTE 3
Test
MC14568
7