MC145018P 查看數據表（PDF） - Freescale Semiconductor

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MC145018P

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

Freescale Semiconductor 

Table 2. Recommended Operating Conditions

(Voltages referenced to VSS)

Parameter

Supply Voltage

Timing Capacitor

Timing Resistor

Battery Load (Resistor or LED)

Symbol

VDD

—

—

—

Value

9.0

0.1

8.2

10

Unit

V

µF

MΩ

mA

Table 3. Electrical Characteristics

(Voltages referenced to VSS, TA = 25°C)

Characteristic

Operating Voltage

Output Voltage

Piezoelectric Horn Drivers (IOH = –16 mA)

Comparators (IOH = –30 µA)

Piezoelectric Horn Drivers (IOL = + 16 mA)

Comparators (IOL = +30 µA)

Output Voltage - LED Driver, IOL = 10 mA

Output Impedance, Active Guard

Pin 14

Pin 16

Operating Current (Rbias = 8.2 MΩ)

Input Current - Detect (40% R.H.)

Input Current, Pin 8

Input Current @ 50°C, Pin 15

Internal Set Voltage

Low Battery

Sensitivity

Hysteresis

Offset Voltage (measured at Vin = VDD/2)

Active Guard

Detect Comparator

Input Voltage Range, Pin 8

Input Capacitance

Common Mode Voltage Range, Pin 15

I/O Current, Pin 2

Input, VIH = VDD –2

Output, VOH = VDD –2

Symbol

VDD

VOH

VOL

VOL

Lo-Z

Hi-Z

IDD

Iin

Iin

Iin

Vlow

Vset

vhys

VOS

Vin

Cin

Vcm

IIH

IOH

VDD

VDC

—

7.2

9.0

7.2

9.0

7.2

9.0

9.0

9.0

12.0

9.0

9.0

—

9.0

—

9.0

9.0

9.0

—

—

—

—

—

Min

6.0

6.3

8.5

—

—

—

—

—

—

—

—

—

—

7.2

47

75

—

—

VSS –10

—

0.6

25

–4.0

Typ(1)

—

—

8.8

—

0.1

—

—

—

5.0

—

—

—

—

—

50

100

—

—

—

5.0

—

—

—

Max

12

—

—

0.9

0.5

3.0

10

1000

9.0

12.0

±1.0

±0.1

±6.0

7.8

53

150

±100

±50

VDD + 10

—

VDD –2

100

—16

1. Data labelled “Typ'' is not to be used for design purposes but is intended as an indication of the IC's potential performance.

Unit

V

V

V

V

kΩ

µA

pA

µA

pA

V

%VDD

mV

mV

V

pF

V

µA

mA

Sensors

Freescale Semiconductor

MC145018

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