MC145017(2005) 데이터 시트보기 (PDF) - Freescale Semiconductor

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MC145017
(Rev.:2005)

Low-Power CMOS Ionization Smoke Detector IC with Temporal Pattern Horn Driver

Freescale Semiconductor 

VDD

VDD

80 K

-

3

+

1045 K

13

1125 K

VDD

+

-

15

+

-

4

Low Battery Comp.

Latch

7

Oscillator

12

Latch

1

Detect Input

VDD

14 Lo-Z

Active

Guard

Piezoelectric

Horn Driver

8

11

10

VDD

5

6

9

LED Driver

16 HI-Z

Figure 2. Block Diagram

Table 1. Maximum Ratings(1)

(Voltages referenced to VSS)

Rating

DC Supply Voltage

Input Voltage, All Inputs Except Pin 8

DC Current Drain per Input Pin, Except Pin 15 = 1 mA

Symbol

VDD

Vin

I

Value

-0.5 to + 15

-0.25 to VDD +0.25

10

Unit

V

V

mA

DC Current Drain per Output Pin

Operating Temperature Range

Storage Temperature Range

Reverse Battery Time

I

30

mA

TA

-10 to +60

°C

Tstg

-55 to +125

°C

tRB

5.0

s

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 Vin and Vout be constrained to the range VSS ≤ (Vin or Vout) ≤VDD.

Table 2. Recommended Operating Conditions

(Voltages referenced to VSS)

Parameter

Supply Voltage

Timing Capacitor

Timing Resistor

Battery Load (Resistor or LED)

Symbol

VDD

—

—

—

Value

Unit

9.0

V

0.1

µF

8.2

MΩ

10

mA

MC145017

2

Sensors

Freescale Semiconductor

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