RE46C144 查看數據表（PDF） - Microchip Technology

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RE46C144

CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode

Microchip Technology 

RE46C144

1.0 ELECTRICAL

CHARACTERISTICS

1.1 Absolute Maximum Ratings†

VDD....................................................................................15V

Input Voltage Range Except FEED, IO .......... VIN = -.3V to VDD +.3V

FEED Input Voltage Range ..................... VINFD =-10 to +22V

IO Input Voltage Range................................. VIO1= -.3 to 15V

Input Current except FEED ................................... IIN = 10 mA

Operating Temperature ................................TA = -25 to +75°C

Storage Temperature ............................TSTG = -55 to +125°C

Maximum Junction Temperature ......................... TJ = +150°C

† Notice: Stresses above those listed under “Maximum

ratings” may cause permanent damage to the device.

This is a stress rating only and functional operation of

the device at these or any other conditions above those

indicated in the operation listings of this specification is

not implied. Exposure to maximum rating conditions for

extended periods may affect device reliability.

DC ELECTRICAL CHARACTERISTICS

DC Electrical Characteristics: Unless otherwise indicated, all parameters apply at TA = -25°C to +75°C, VDD = 9V.

Parameter

Symbol Test Pin Min.

Typ.

Max. Units

Conditions

Supply Voltage

Supply Current

VDD

5

IDD1

5

IDD2

5

IDD3

5

IDD4

5

6

—

12

V Operating

—

4

6

µA Configured as in Typical

Application, COSC=VSS

—

5.5

8

µA Configured as in Typical

Application, VDD = 12V,

COSC = VSS

—

—

2

mA Configured as in Typical

Application, STROBE on,

IRED off, VDD = 12V

—

—

3

mA Configured as in Typical

Application, STROBE on,

IRED on, VDD = 12V,

Note 1

Input Voltage High

VIH1

10

6.2

—

—

V FEED

VIH2

7

3.2

—

—

V No Local Alarm, IO as

input

VIH3

15

1.6

—

—

V VSEN

VIH4

16

8.5

—

—

V TEST

Input Voltage Low

VIL1

10

—

—

2.7

V FEED

VIL2

7

—

—

1.5

V No Local Alarm, IO as

Input

VIL3

15

—

VIL4

16

—

Input Leakage Low

IIL1

1, 2, 3

—

—

.5

V VSEN

—

7

V TEST

—

-100

nA VDD = 12V, COSC = 12V,

STROBE active

Note 1:

2:

3:

4:

IIL2

10, 12

—

—

-100

nA VDD = 12V, VIN = VSS

IIL3

15, 16

—

—

-1

µA VDD = 12V, VIN = VSS

IIFD

10

—

—

-50

µA FEED = -10V

Does not include Q3 emitter current.

Not production tested.

Typical values are for design information and are not ensured.

Limits over the specified temperature range are not production tested and are based on characterization

data.

 2009-2012 Microchip Technology Inc.

DS22180C-page 3

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