MC14467-1 View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MC14467-1

Low-Power CMOS Ionization Smoke Detector IC

Freescale Semiconductor 

Table 2. Recommended Operating Conditions

(Voltages referenced to VSS)

Parameter

Supply Voltage

Timing Capacitor

Timing Resistor

Battery Load (Resistor or LED)

Symbol

Value

Unit

VDD

9.0

V

—

0.1

µF

—

8.2

MΩ

—

10

mA

Table 3. Electrical Characteristics

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

Characteristic

VDD

Symbol

VDC

Min

Typ(1)

Max

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

VDD

—

6.0

—

12

VOH

7.2

6.3

—

—

9.0

8.5

8.8

—

VOL

7.2

—

—

0.9

9.0

—

0.1

0.5

VOL

7.2

—

—

3.0

LO-Z

9.0

—

—

10

HI-Z

9.0

—

—

1000

Operating Current (Rbias = 8.2 MΩ)

IDD

9.0

—

5.0

9.0

12.0

—

—

12.0

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

Internal Set Voltage

Low Battery

Sensitivity

Hysteresis

Offset Voltage (measured at Vin = VDD/2

Active Guard

Detect Comparator

IIN

9.0

—

—

± 1.0

VLOW

9.0

7.2

—

7.8

VSET

—

47

50

53

VHYS

9.0

75

100

150

VOS

9.0

—

—

± 100

9.0

—

—

± 50

Input Voltage Range, Pin 8

Input Capacitance

Common Mode Voltage Range, Pin 15

VIN

—

VSS - 10

—

VDD + 10

CIN

—

—

5.0

—

VCM

—

0.6

—

VDD - 2

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

V

%VDD

mV

mV

V

pF

V

Sensors

Freescale Semiconductor

MC14467-1

3

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