MC145018 Ver la hoja de datos (PDF) - Motorola => Freescale

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Fabricante

MC145018

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

Motorola => Freescale 

TIMING PARAMETERS (C = 0.1 µF, Rbias = 8.2 MΩ, VDD = 9.0 V, TA = 25°C, See Figure 6)

Characteristics

Symbol

Min

Oscillator Period

No Smoke

tCI

Smoke

1.46

37.5

Oscillator Rise Time

Horn Output

(During Smoke)

LED Output

Pulses

Horn Output

(During Low Battery)

Pulses

On Time

Off Time

Between

On Time

On Time

Between

tr

PWon

PWoff

tLED

PWon

ton

toff

10.1

450

450

35.0

10.1

10.1

35.0

MC145018

Max

Units

1.85

s

45.8

ms

12.3

ms

550

ms

550

ms

44.5

s

12.3

ms

12.3

ms

44.5

s

VDD VDD

TO OTHER UNITS

I/O FEEDBACK

2

8

45 K

LOW V SET 3

DETECT 1

COMP. OUT

SENSITIVITY 13

SET

325 K

4

STROBE OUT

LOW BATTERY

+ COMPARATOR

–

280 K

DETECT

COMPARATOR

+

–

15 DETECT

INPUT

GUARD

AMP LO–Z VDD

+

14

–

ALARM

LOGIC

POWER–ON

RESET

HI–Z

16

OSC

AND

TIMING

11

SILVER

10

BRASS

5

LED

VDD = PIN 6

VSS = PIN 9

12

7

VDD

Figure 1. Block Diagram

Motorola Sensor Device Data

3

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