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MC145011 Datasheet(PDF) 2 Page - Freescale Semiconductor, Inc

Part No. MC145011
Description  Photoelectric Smoke Detector IC with I/O For Line-Powered Applications
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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MC145011 Datasheet(HTML) 2 Page - Freescale Semiconductor, Inc

 
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Sensors
2
Freescale Semiconductor
MC145011
Figure 2. Block Diagram
Table 1. Maximum Ratings(1)
(Voltages referenced to VSS)
1. Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the limits
in the Electrical Characteristics tables.
Parameter
Symbol
Value
Unit
DC Supply Voltage
VDD
-0.5 to +12
V
DC Input Voltage
C1, C2, DETECT
OSC, LOW-SUPPLY TRIP
I/O
FEEDBACK
Test
VIN
-0.25 to VDD +0.25
-0.25 to VDD +0.25
-0.25 to VDD +10
-15 to +25
-1.0 to VDD +0.25
V
DC Input Current, per Pin
IIN
±10
mA
DC Output Current, per Pin
IOUT
±25
mA
DC Supply Current, VDD and VSS Pins
IDD
+25 / -150
mA
Power Dissipation in Still Air
5 Seconds
Continuous
PD
1200(2)
350(3)
2. Derating: -12 mW/
°C from 25° to 60°C.
3. Derating: - 3.5 mW/
°C from 25° to 60°C.
This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must
be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, Vin
and Vout should be constrained to the range VSS ≤ (Vin or Vout) ≤ VDD except for the I/O, which can exceed VDD, and the Test input, which
can go below VSS.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either VSS or VDD). Unused outputs and/or an unused I/O
must be left open.
mW
Storage Temperature
TSTG
-55 to +125
°C
Lead Temperature, 1 mm from Case for 10 Seconds
TL
260
°C
+
-
+
-
DETECT
OSC
R1
TEST
STROBE
LOW-SUPPLY
TRIP
3
12
13
16
4
15
2
1
C1 C2
AMP
COMP
COMP
Alarm
Logic
Horn Modulator
And Driver
VDD - 5 V
REF
Timing
Logic
VDD - 3.5 V
REF
Smoke
GATE
ON/OFF
On/Off
8
9
10
6
11
7
PIN 5 = VDD
PIN 14 = VSS
IRED
FEEDBACK
SILVER
BRass
I/O
Gate
OSC
LED


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