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MC14568

Features: • Speed-Up Sampling Rate of 40 ms of Internal Clock Period (Pin 12) After First Detection of Smoke• Timer Function for Reduced Sensitivity for a Nominal Period of 6.43 Minutes (10 Minutes Max)• High-Smoke Detection in the Reduced Sensitivity Mode• Internal and E...

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SeekIC No. : 004415515 Detail

MC14568: Features: • Speed-Up Sampling Rate of 40 ms of Internal Clock Period (Pin 12) After First Detection of Smoke• Timer Function for Reduced Sensitivity for a Nominal Period of 6.43 Minutes ...

MC14568 Data Sheet

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Part Number:
MC14568
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/27

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Product Details

Description



Features:

• Speed-Up Sampling Rate of 40 ms of Internal Clock Period (Pin 12) After First Detection of Smoke
• Timer Function for Reduced Sensitivity for a Nominal Period of 6.43 Minutes (10 Minutes Max)
• High-Smoke Detection in the "Reduced Sensitivity" Mode
• Internal and External Low Battery Threshold
• Internal and External Smoke Reference Settings
• Guaranteed Power Up Without Random LED and Horn Chirps
• Reversed Battery Protection
• Low Leakage Detect Pin
• Metal Option to Add Double Chirp at End of Reduced Sensitivity Period; Default is No Chirp
• Pb-Free Packaging Designated by Suffix Code ED


Pinout

Connection Diagram


Specifications

Rating
Symbol
Value
Unit
Supply Voltage Range
VDD
-0.5 to +15
V
Input Voltage Range
VIN
-0.3 to VDD +0.3
V
Maximum Current (Source/Sink) by Pins 6 (VDD) and Pin 9 (VSS)
IDS
30
mA
Maximum Current Input Pins
IIN
±10
mA
Maximum Current Output Pins (Pins 2, 4, 5, 10, 11)
-
±25
mA
Maximum Current (Pin 15)
-
±1.0
mA
Operating Temperature Range
TA
0 to +50
°C
Storage Temperature Range
TSTG
-55 to +125
°C
Human Body Model ESD Rating
VESD
1000
V



Description

The MC14568, 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. MC14568 is designed to operate in smoke detector systems that comply with UL217 and UL268 specifications.

An internal oscillator with associated logic controls the overall functionality by powering down the MC14568 for 1.67 seconds and sensing smoke in a 10 ms window. In this way, standby current consumption is reduced to between 5.0 and 9.0 µA, thus providing longer battery life. In addition, a networking capability allows as many as 125 to be interconnected so that if any unit senses smoke, all units will sound an alarm.

The MC14568 is supplied in a 16-pin dual in-line plastic package and is designed to run on a power supply between 6 to 12 Volts.




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