MC14467-1_07 FREESCALE | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 9
Technical content
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 Outputs for Detect and Low Battery
- Internal Reverse Battery Protection
- Pb-Free Packaging Designated by Suffix Code ED and EG
ORDERING INFORMATION
Device Case No. Package MC14467P1 648-08 Plastic Dip MC14467ED1 MCZ14467EG/R2 751G-04 SOICW N/C LED VDD GUARD LO-Z SILVER BRASS VSS DETECT COMP. OUT LOW V SET LOW V COMP. OUT TIMING RESISTOR FEEDBACK OSC CAPACITOR SENSITIVITY SET DETECT INPUT GUARD HI-Z DETECT COMP. OUT N/C LOW V SET LOW V COMP. OUT LED VDD TIMING RESISTOR FEEDBACK GUARD HI-Z DETECT INPUT GUARD LO-Z SENSITIVITY SET OSC CAPACITOR SILVER BRASS VSS MC14467-1 LOW-POWER CMOS IONIZATION SMOKE DETECTOR IC P SUFFIX ED SUFFIX (PB-FREE) 16-LEAD PLASTIC DIP CASE 648-08 EG SUFFIX (PB-FREE) 16-LEAD SOICW CASE 751G-04 Figure 1. Pin Connections
2 Freescale Semiconductor
Figure 2. Block Diagram Table 1. Maximum Ratings(1)
- Maximum Ratings are those values beyond whic h damage to the device may occur. This device contains circuitry to protect the inputs
VIN and VOUT be constrained to the range VSS ≤ (VIN or VOUT ) VDD. For pin 8, refer to the Electrical Characteristics.
1125 K 15
14 Lo-Z
Table 2. Recommended Operating Conditions Table 3. Electrical Characteristics
- Data labelled “Typ'' is not to be used for design purposes but is intended as an indication of the IC's potential performance.
4 Freescale Semiconductor
Figure 3. Typical LED Output I-V Characteristic Figure 4. Typical Comparator Output I-V Characteristic Figure 5. Typical P Horn Driver Output I-V Characteristic Table 4. Timing Parameters
- Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
input) has internal diode protection against static damage. interaction here due to the common voltage divider network. smoke chamber ionization source. Figure 6. Typical Application as Ionization Smoke Detector
1.5 MΩ* 220 k Ω*
*NOTE: Component values may change depending on type of piezoelectric horn used.
6 Freescale Semiconductor
Figure 7. Timing Diagram
24 Clock Cycles
- Horn modulation is self-completing. When going from smoke to no smoke, the alarm condition will terminate only when horn is off.
- Comparators are strobed on once per clock cycle (1.67 s for no smoke, 40 ms for smoke).
- Low battery comparator information is latched only during LED pulse.
8 Freescale Semiconductor
Rev. 5.0 Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Freescale Semiconductor reserves the right to make changes without further notice to any products herein. Freescale Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters that may be provided in Freescale Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”, must be validated for each customer application by customer’s technical experts. Freescale Semiconductor does not convey any license under its patent rights nor the rights of others. Freescale Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer purchase or use Freescale Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold Freescale Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Freescale Semiconductor was negligent regarding the design or manufacture of the part. Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc. 2007. All rights reserved. RoHS-compliant and/or Pb-free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb-free counterparts. For further information, see http://www.freescale.com or contact your Freescale sales representative. For information on Freescale’s Environmental Products program, go to http:// www.freescale.com/epp. How to Reach Us: Home Page: www.freescale.com Web Support: http://www.freescale.com/support USA/Europe or Locations Not Listed: Freescale Semiconductor, Inc. Technical Information Center, EL516
2100 East Elliot Road
Tempe, Arizona 85284 +1-800-521-6274 or +1-480-768-2130 www.freescale.com/support Europe, Middle East, and Africa: Freescale Halbleiter Deutschland GmbH Technical Information Center Schatzbogen 7
81829 Muenchen, Germany
+44 1296 380 456 (English) +46 8 52200080 (English) +49 89 92103 559 (German) +33 1 69 35 48 48 (French) www.freescale.com/support Japan: Freescale Semiconductor Japan Ltd. Headquarters ARCO Tower 15F 1-8-1, Shimo-Meguro, Meguro-ku, Tokyo 153-0064 Japan 0120 191014 or +81 3 5437 9125 support.japan@freescale.com Asia/Pacific: Freescale Semiconductor Hong Kong Ltd. Technical Information Center
2 Dai King Street
Tai Po, N.T., Hong Kong +800 2666 8080 support.asia@freescale.com For Literature Requests Only: Freescale Semiconductor Literature Distribution Center P .O. Box 5405 Denver, Colorado 80217 1-800-441-2447 or 303-675-2140 Fax: 303-675-2150 LDCForFreescaleSemiconductor@hibbertgroup.com