MCZ145011DW FREESCALE [Freescale Semiconductor, Inc], MCZ145011DW Datasheet

MCZ145011DW

Manufacturer Part Number

MCZ145011DW

Description

Photoelectric Smoke Detector IC with I/O For Line-Powered Applications

Manufacturer

FREESCALE [Freescale Semiconductor, Inc]

Datasheet

1.MCZ145011DW.pdf (12 pages)

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Freescale Semiconductor

Technical Data

Photoelectric Smoke Detector IC

with I/O For Line-Powered

Applications

sophisticated very-low-power analog and digital circuitry. The IC is used with an in-

frared photoelectric chamber. Detection is accomplished by sensing scattered light

from minute smoke particles or other aerosols. When detection occurs, a pulsating

alarm is sounded via on-chip push-pull drivers and an external piezoelectric trans-

ducer.

diodes). Two external capacitors C1 and C2, C1 being the larger, determine the

gain settings. Low gain is selected by the IC during most of the standby state. Me-

dium gain is selected during a local-smoke condition. High gain is used during push

button test. During standby, the special monitor circuit which periodically checks for

degraded chamber sensitivity uses high gain, also.

for common signaling. An on-chip current sink provides noise immunity when the I/

O is an input. A local-smoke condition activates the short-circuit-protected I/O driv-

er, thereby signaling remote smoke to the interconnected units. Additionally, the I/

O pin can be used to activate escape lights, enable auxiliary or remote alarms, and/

or initiate auto-dialers.

ing a load current from the LED pin. The trip point is set using two external resistors.

The supply for the MC145011 must be a dc power source capable of supplying 35

mA continuously and 45 mA peak. When the MC145011 is in standby, an external

LED is continuously illuminated to indicate that the device is receiving power.

cal-smoke condition. A pulsating audible alarm with the LED illuminated indicates

a remote-smoke condition. A beep or chirp indicates a low-supply condition or de-

graded chamber sensitivity. A low-supply condition does not affect the smoke de-

tection capability if V

chamber sensitivity can be distinguished by performing a push button (chamber)

test. This circuit is designed to operate in smoke detector systems that comply with

UL217 and UL268 specifications.

Features

•

Freescale Semiconductor, Inc. reserves the right to change the detail specifications, as may be required, to

permit improvements in the design of its products.

The CMOS MC145011 is an advanced smoke detector component containing

The variable-gain photo amplifier allows direct interface to IR detectors (photo-

The I/O pin, in combination with VSS, can be used to interconnect up to 40 units

While in standby, the low-supply detection circuitry conducts periodic checks us-

An extinguished LED accompanied by a pulsating audible alarm indicates a lo-

Operating Voltage Range: 6 to 12 V

Operating Temperature Range: -10 to 60 C

Average Standby Supply Current (Visible LED Illuminated): 20 mA

Power-On Reset Places IC in Standby Mode (Non-Alarm State)

Electrostatic Discharge (ESD) and Latch Up Protection Circuitry on All Pins

Chip Complexity: 2000 FETs, 12 NPNs, 16 Resistors, and 10 Capacitors

Pb-Free Packaging Designated by Suffix Code ED

MCZ145011DW

MC145011ED

MC145011P

6 V. Therefore, the low-supply condition and degraded

Device

ORDERING INFORMATION

SOIC Package

Plastic Dip

Package

LINE-POWERED APPLICATIONS

STROBE

DETECT

DETECTOR IC WITH I/O FOR

BRASS

PHOTOELECTRIC SMOKE

Figure 1. Pin Connections

IRED

VDD

I/O

ED SUFFIX (PB-FREE)

MC145011

PLASTIC SOIC

CASE 751G-04

PLASTIC DIP

CASE 648-08

DW SUFFIX

P SUFFIX

Rev. 5.0, 11/2006

TEST

LOW-SUPPLY

TRIP

VSS

OSC

LED

FEEDBACK

SILVER

MC145011

Related parts for MCZ145011DW

MCZ145011DW Summary of contents

Page 1

... Pb-Free Packaging Designated by Suffix Code ED ORDERING INFORMATION Device MC145011P MC145011ED MCZ145011DW Freescale Semiconductor, Inc. reserves the right to change the detail specifications, as may be required, to permit improvements in the design of its products. © Freescale Semiconductor, Inc., 2006. All rights reserved. Package Plastic Dip ...

Page 2

AMP DETECT 12 OSC OSC TEST 4 STROBE 15 LOW-SUPPLY TRIP (1) Table 1. Maximum Ratings (Voltages referenced Parameter DC Supply Voltage DC Input Voltage DC Input Current, per ...

Page 3

Table 2. Electrical Characteristics ( Unless Otherwise Indicated, Voltages Referenced Characteristic Power Supply Voltage Range Supply Threshold Voltage, Low-Supply Alarm Average Operating Supply Current, Excluding the Visible LED Current (per Package) Peak ...

Page 4

Table 3. AC Electrical Characteristics (Reference Timing Diagram Figure 6 and C3 = 1500 No. Characteristic (1) 1 Oscillator Period 2 LED Status STROBE Pulse Width 6 IRED Pulse Period 7 ...

Page 5

Table 4. Pin Description Pin No. Pin Name 4 STROBE This output provides a strobed, regulated voltage referenced to V 0.2% C maximum from - The supply-voltage coefficient (line regulation) is 0.2%/V maximum from 6 ...

Page 6

NOTE: Includes external component variations. See Figure 4. AC Characteristics versus Temperature 1.03 1.02 1.01 1.00 0.99 0.98 -10 0 NOTE: These components were used to ...

Page 7

Sensors Freescale Semiconductor Figure 6. Standby Timing Diagram MC145011 7 ...

Page 8

MC145011 8 Figure 7. Smoke Timing Diagram Sensors Freescale Semiconductor ...

Page 9

0.047 F C2* V+ 4700 pF R14 560 R8 8.2 k R11 250 k † R10 D1 4 DETECTOR R12 Emitter + C5 100 F Q1 ...

Page 10

To facilitate checking the sensitivity and calibrating smoke detectors, the MC145011 can be placed in a calibration mode. In this mode, certain device pins are controlled/ reconfigure as shown in Table 5. To place the part in the calibration mode, ...

Page 11

0.25 (0.010 STYLE 1: PIN 1. CATHODE 0. 10.55 8X 10.05 PIN'S NUMBER 1 PIN 1 INDEX A 8 7.6 7.4 ...

Page 12

How to Reach Us: Home Page: www.freescale.com E-mail: support@freescale.com USA/Europe or Locations Not Listed: Freescale Semiconductor Technical Information Center, CH370 1300 N. Alma School Road Chandler, Arizona 85224 +1-800-521-6274 or +1-480-768-2130 support@freescale.com Europe, Middle East, and Africa: Freescale Halbleiter Deutschland ...

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