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MC14468 Datasheet(PDF) 1 Page - Freescale Semiconductor, Inc

Part No. MC14468
Description  Low-Power CMOS Ionization Smoke Detector IC with Interconnect
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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MC14468 Datasheet(HTML) 1 Page - Freescale Semiconductor, Inc

   
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Document Number: MC14468
Rev 5.0, 11/2006
Freescale Semiconductor
Technical Data
© Freescale Semiconductor, Inc., 2006. All rights reserved.
Low-Power CMOS Ionization Smoke
Detector IC with Interconnect
The MC14468, when used with an ionization chamber and a small number of
external components, will detect smoke. When smoke is sensed, an alarm is
sounded via an external piezoelectric transducer and internal drivers. This circuit
is designed to operate in smoke detector systems that comply with UL217 and
UL268 specifications.
Features
Ionization Type with On-Chip FET Input Comparator
Piezoelectric Horn Driver
Guard Outputs on Both Sides of Detect Input
Input-Production Diodes on the Detect Input
Low-Battery Trip Point, Internally Set, can be Altered Via External Resistor
Detect Threshold, Internally Set, can be Altered Via External Resistor
Pulse Testing for Low Battery Uses LED for Battery Loading
Comparator Output for Detect
Internal Reverse Battery Protection
Strobe Output for External Trim Resistors
I/O Pin Allows Up to 40 Units to be Connected for Common Signaling
Power-On Reset Prevents False Alarms on Battery Change
Pb-Free Packaging Designated by Suffix Code ED
ORDERING INFORMATION
Device
Temperature
Range
Case No.
Package
MC14468P
–10
° to 60°C
648-08
Plastic Dip
MC14468ED
MC14468
LOW-POWER CMOS
IONIZATION SMOKE
DETECTOR IC
WITH INTERCONNECT
P SUFFIX
ED SUFFIX (PB-FREE)
16-LEAD PLASTIC DIP
CASE 648-08
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
DETECT
COMP. OUT
I/O
LOW V SET
STROBE
OUT
LED
TIMING
RESISTOR
FEEDBACK
GUARD HI-Z
DETECT INPUT
GUARD LO-Z
SENSITIVITY
SET
OSC
CAPACITOR
SILVER
BRASS
VSS
VDD
9
Figure 1. Pin Connections


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Part NumberComponents DescriptionHtml ViewManufacturer
MC14568Low-Power CMOS Ionization Smoke Detector with Interconnect and Timer 1 2 3 4 5 MoreFreescale Semiconductor, Inc

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