RE46C145

CMOS Photoelectric Smoke Detector ASIC with

R&E International

Interconnect and Timer Mode

A Subsidiary of Microchip Technology Inc.

Product Specification

© 2009 Microchip Technology Inc.

DS22181A-page 2

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only

and operation at these conditions for extended periods may affect device reliability.

This product utilizes CMOS technology with static protection; however proper ESD prevention procedures should be used when handling this

product. Damage can occur when exposed to extremely high static electrical charge.

DC Electrical Characteristics at TA = -25° to 75°C, VDD=9V, Typical Application (unless otherwise noted)

Limits

Parameter

Symbo

l

Test

Pin

Test Conditions

Min

Typ

Max

Units

Supply Voltage

5

Operating

6

12

V

5

Configured as in Figure 2,

COSC=VSS, LED off

4

6

uA

5

Configured as in Figure 2,

VDD=12V, COSC=VSS

5.5

8

uA

5

Configured as in Figure 2, STROBE

on, IRED off, VDD=12V

2

mA

Supply Current

5

Configured as in Figure 2, STROBE

on, IRED on, VDD=12V, Note 1

3

mA

10

FEED

6.2

4.5

V

7

No Local Alarm, IO as an Input

3.2

V

15

VSEN

1.6

V

Input Voltage High

16

TEST

8.5

V

10

FEED

4.5

2.7

V

7

No Local Alarm, IO as an Input

1.5

V

15

VSEN

.5

V

Input Voltage Low

16

TEST

7

V

1,2,3

VDD=12V, COSC=12V, STROBE

active

-100

nA

10,12

VDD=12V, Vin=VSS

-100

nA

15,16

VDD=12V, Vin=VSS

-1

uA

Input Leakage Low

10

FEED=-10V

-50

uA

1,2

VDD=12V, Vin=VDD, STROBE

active

100

nA

3,10,12

VDD=12V, Vin=VDD

100

nA

Input Leakage High

10

FEED=22V

50

uA

16

Vin=VDD

.25

10

uA

15

Vin=VDD

.1

.25

.5

uA

7

Vin=VDD

20

80

uA

Input Pull Down Current

7

Vin=17V, VDD=12

140

uA

Output Leakage Current

Low

11,13

Output Off, Output=VSS

-1

uA

Output Leakage Current

High

11,13

Output Off, Output=VDD

1

uA

Note 1: Does not include Q3 emitter current.