MC145018 Motorola, MC145018 Datasheet
MC145018
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MC145018 Summary of contents
Page 1
... Ionization Smoke Detector IC with Interconnect and Temporal Horn Driver The MC145018, 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. ...
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... Freescale Semiconductor, Inc. MC145018 RECOMMENDED OPERATING CONDITIONS Parameter Supply Voltage Timing Capacitor Timing Resistor Battery Load (Resistor or LED) ELECTRICAL CHARACTERISTICS (Voltages referenced to V Characteristic Operating Voltage Output Voltage * Piezoelectric Horn Drivers ( mA Comparators ( Piezoelectric Horn Drivers ( mA) ...
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... On Time t on Between t off TO OTHER UNITS I/O FEEDBACK 2 8 LOW BATTERY COMPARATOR ALARM LOGIC POWER–ON RESET INPUT LO–Z V HI–Z DD OSC 14 16 AND TIMING 12 7 Figure 1. Block Diagram Go to: www.freescale.com MC145018 Min Max Units 1.46 1.85 s 37.5 45.8 ms 10.1 12.3 ms 450 550 ms 450 550 ms 35.0 44.5 s 10.1 12.3 ms 10.1 12.3 ms 35.0 44.5 s ...
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... Freescale Semiconductor, Inc. MC145018 100 9.0 Vdc DD 10 7.2 Vdc DD 1.0 0 DRAIN TO SOURCE VOLTAGE (Vdc) DS Figure 2. Typical LED Output I–V Characteristic 1000 9.0 Vdc 100 7.2 Vdc DD 10.0 P–CH SOURCE CURRENT 1 DRAIN TO SOURCE VOLTAGE (Vdc) DS For More Information On This Product ...
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... Freescale Semiconductor, Inc. TIMING The internal oscillator of the MC145018 operates with a period of 1.65 seconds during no–smoke conditions. Each 1.65 seconds, internal power is applied to the entire IC and a check is made for smoke, except during LED pulse, Low Bat- tery Alarm Chirp, or Horn Modulation (in smoke). Every 24 ...
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... SMOKE NO SMK NO LOW BAT LATCH ALARM CONDITION % [ ( 100 mV LEVEL SHIFT) & NFPA MOD Figure 6. MC145018 Timing Diagram 0.5 SEC 0.5 SEC Figure 7. Horn Modulation Go to: www.freescale.com OSC PIN 12 SMOKE – N – SMK LOW BAT – Y – N HORN – ON (NOTE 1) – ...
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... PLANE CASE 648–08 ISSUE R Go to: www.freescale.com MC145018 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. INCHES MILLIMETERS DIM ...
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... Customer Focus Center: 1–800–521–6274 Mfax : RMFAX0@email.sps.mot.com Motorola Fax Back System HOME PAGE: http://motorola.com/sps/ For More Information On This Product, 8 – TOUCHTONE 1–602–244–6609 – US & Canada ONLY 1–800–774–1848 – http://sps.motorola.com/mfax/ Go to: www.freescale.com Motorola Sensor Device Data MC145018/D ...