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MC145012

Photoelectric Smoke Detector IC with I/O and Temporal Pattern Horn Driver

Freescale Semiconductor 

Table 2. Electrical Characteristics

(Voltages Referenced to VSS, TA = - 10 to 60°C Unless Otherwise Indicated).

Characteristic

Symbol

Test Condition

Power Supply Voltage Range

Supply Threshold Voltage, Low-Supply Alarm

Average Operating Supply Current (per Package)

(Does Not Include Current through D3-IR Emitter)

Peak Supply Current (per Package)

(Does Not Include IRED Current into Base of Q1)

Low-Level Input Voltage

High-Level Input Voltage

Input Current

Low-Level Input Current

Pull-Down Current

I/O

Feedback

Test

I/O

Feedback

Test

OSC, Detect

Low-Supply Trip

Feedback

Test

Test

I/O

Low-Level Output Voltage

High-Level Output Voltage

Output Voltage

(For Line Regulation, See

Pin Descriptions)

LED

Silver, Brass

Silver, Brass

Strobe

IRED

High-Level Output Current

I/O

Off-State Output Leakage Current

LED

Common Mode

Voltage Range

C1, C2, Detect

Smoke Comparator

Reference Voltage

Internal

Notes

5. TA = 25°C only.

VDD

VTH

IDD

IDD

VIL

VIH

IIN

IIL

IIH

VOL

VOH

VOUT

IOH

IOZ

VIC

VREF

Low-Supply Trip: Vin = VDD/3

Standby

Configured per Figure 8

During Strobe On, IRED Off

Configured per Figure 8

During Strobe On, IRED On

Configured per Figure 8

Vin = VSS or VDD

Vin = VSS or VDD

Vin = VSS or VDD

Vin = VSS

Vin = VDD

No Local Smoke, Vin = VDD

No Local Smoke, Vin = 17 V

Iout = 10 mA

Iout = 16 mA

Iout = - 16 mA

Inactive, Iout = 1 µA

Active, Iout = 100 µA to 500 µA

(Load Regulation)

Inactive, Iout = 1 µA

Active, Iout = 6 mA

(Load Regulation)

Local Smoke, Vout = 4.5 V

Local Smoke, Vout = VSS

(Short Circuit Current)

Vout = VSS or VDD

Local Smoke, Push-button Test,

or Chamber Sensitivity Test

Local Smoke, Push-button Test,

or Chamber Sensitivity Test

VDD

V

—

—

12.0

12.0

12.0

9.0

9.0

9.0

9.0

9.0

9.0

12.0

12.0

12.0

12.0

9.0

9.0

12.0

6.5

6.5

6.5

—

9.0

—

9.0

6.5

12.0

12.0

—

—

Min

Max

Unit

6.0

12

V

6.5

7.8

V

—

8.0

µA

—

2.0

mA

—

3.0

—

1.5

V

—

2.7

—

7.0

3.2

—

V

6.3

—

8.5

—

—

± 100

nA

—

± 100

—

± 100

- 100

0.5

25

—

- 1.0

µA

10

µA

100

140

—

0.6

V

—

1.0

5.5

—

V

VDD - 0.1

—

V

VDD - 4.40 VDD - 5.30

—

2.25 (5)

0.1

3.75 (5)

-4.0

—

mA

—

-16

—

±1.0

µA

VDD - 4.0 VDD - 2.0

V

VDD - 3.08 VDD - 3.92 V

MC145012

4

Sensors

Freescale Semiconductor

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