
4–36
Motorola Sensor Device Data
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ELECTRICAL CHARACTERISTICS 
(TA = – 10 to 60
°
C Unless Otherwise Indicated, Voltages Referenced to VSS)
Symbol
Parameter
Test Condition
VDD
V
Min
Max
Unit
VDD
VTH
Power Supply Voltage Range
—
6.0
12
V
Supply Threshold Voltage, Low–Supply
Alarm
Low–Supply Trip:  Vin = VDD/3
—
6.5
7.8
V
IDD
Average Operating Supply Current,
Excluding the Visible LED Current 
(per Package)
Standby 
Configured per Figure 5
12.0
—
12
μ
A
iDD
Peak Supply Current , Excluding the
Visible LED Current (per Package)
During Strobe On, IRED Off
Configured per Figure 5
12.0
—
2.0
mA
During Strobe On, IRED On
Configured per Figure 5
12.0
—
3.0
VIL
Low–Level Input Voltage
I/O
Feedback
Test
9.0
9.0
9.0
—
—
—
1.5
2.7
7.0
V
VIH
High–Level Input Voltage
I/O
Feedback
Test
9.0
9.0
9.0
3.2
6.3
8.5
—
—
—
V
Iin
Input Current
Osc, Detect
Low–Supply Trip
Feedback
Vin = VSS or VDD
Vin = VSS or VDD
Vin = VSS or VDD
12.0
12.0
12.0
—
—
—
±
 100
±
 100
±
 100
nA
IIL
IIH
Low–Level Input Current
Test
Vin = VSS
Vin = VDD
No Local Smoke, Vin = VDD
No Local Smoke, Vin = 17 V
12.0
—
– 1
μ
A
Pull–Down Current
Test
I/O
9.0
9.0
12.0
0.5
25
—
10
100
140
μ
A
VOL
Low–Level Output Voltage
LED
Silver, Brass
Iout = 10 mA
Iout = 16 mA
6.5
6.5
—
—
0.6
1.0
V
VOH
Vout
High–Level Output Voltage
Silver, Brass
Iout = – 16 mA
Inactive, Iout = –1 
μ
A
Active, Iout = 100 
μ
A to 500 
μ
A
(Load Regulation)
6.5
5.5
—
V
Output Voltage
(For Line Regulation, see Pin
Descriptions)
Strobe
—
9.0
VDD – 0.1
VDD – 4.4
—
VDD – 5.6
V
IRED
Inactive, Iout = 1 
μ
A
Active, Iout = 6 mA
(Load Regulation)
—
9.0
—
2.25*
0.1
3.75*
IOH
High–Level Output Current
I/O
Local Smoke, Vout = 4.5 V
Local Smoke, Vout = VSS
(Short Circuit Current)
6.5
– 4
—
mA
12.0
—
– 16
IOZ
VIC
Off–State Output Leakage Current
LED
Vout = VSS or VDD
Local Smoke, Pushbutton Test, or
Chamber Sensitivity Test
12.0
—
±
 1
μ
A
Common Mode 
Voltage Range
C1, C2, Detect
—
VDD – 4
VDD – 2
V
Vref
Smoke Comparator 
Reference Voltage
Internal
Local Smoke, Pushbutton Test, or
Chamber Sensitivity Test
—
VDD – 3.08
VDD – 3.92
V
* TA = 25
°
C only.
F
Freescale Semiconductor, Inc.
n
.