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Part Number: MC14467-1
Description: The MC14467-1, when used with an ionization chamber and a small number of external components, will de...
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MC14467-1
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DataSheet
General Description
MC14467-1 General Description
The MC14467-1, 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.
MC14467-1 Maximum Ratings
| Symbol | Parameter | Value | Unit |
| VDD | DC Supply Voltage | −0.5 to + 15 | V |
| Vin | DC Input Voltage | −0.25 to VDD + 0.25 | V |
| I | DC Current Drain per Input Pin, Except Pin 15 = 1 mA | 10 | mA |
| I | DC Current Drain per Output Pin | 30 | mA |
| TA | Operating Temperature Range | −10 to +60 | °C |
| tRB | Reverse Battery Time | 5.0 | s |
| Tstg | Storage Temperature Range | 55 to +125 |
°C |
1. Maximum Ratings are those values beyond which damage to the device may occur. This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit. For proper operation it is recommended that except for pin 8, Vin and Vout be constrained to the range VSS (Vin or Vout) VDD. For pin 8, refer to the Electrical Characteristics.
MC14467-1 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
· 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
MC14467-1 Connection Diagram
MC14467-1
PDF/DataSheet Download
- Datasheet: MC14467-1
- File Size: 244466 KB
- Manufacturer: FREESCALE [Freescale Semiconductor, Inc]
- Click here to Download
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