
P
P
- 4 - 
 Andigilog, Inc. 2006 
www.andigilog.com
October 2006 - 70A06010 
aSC7621
Symbol 
Pin 
Type 
Name and Function/Connection 
GPIO1 
6 
Digital I/O 
Alert Out / Zone # THERM Out.  Default is GPIO input 
GPIO2 
5 
Digital I/O 
Alert Out / Zone # THERM Out.  Default is GPIO input 
G
GPIO3 
19 
Digital I/O 
Alert Out / Zone # THERM Out.  Default is GPIO input 
Absolute Maximum Ratings
1
Parameter 
Rating 
Supply Voltage, V
DD
Voltage on Any Digital Input or 
Output Pin other than PWM Outputs 
Voltage on PWM Outputs 
Voltage on 12V Analog Input 
Voltage on 5V Analog Input 
3.6V 
-0.3V to V
DD
 +0.3V
-0.3V to 5.5V 
-0.5V to 16V 
-0.5V to 6.5V 
-0.5V to (V
DD
 + 
0.50V) 
-0.5V to 6.0V 
±1mA 
±5mA 
±20mA 
See (Note 3) 
-65
°
C to +150
°
C 
4000 V 
250 V 
2000V 
Voltage on Remote 1 +, Remote 2 + 
Voltage on Other Analog Inputs 
Current on Remote 1 -, Remote 2 - 
Input Current on Any Pin
2
Package Input Current
2
Package Dissipation at T
A
 = 25
°
C 
Storage Temperature 
Human Body Model 
Machine Model 
ESD
4
Charged Device Model 
Notes: 
1. Absolute maximum ratings are limits beyond which 
operation may cause permanent damage to the device.   
These are stress ratings only; functional operation at or 
above these limits is not implied.   
2. When the input voltage (V
IN
) at any pin exceeds the 
power supplies (V
IN
 < GND or V
IN
 > V
DD
), the current at 
that pin should be limited to 5mA.  The 20mA maximum 
package input current rating limits the number of pins 
that can safely exceed the power supplies with an input 
current of 5mA to four.  Parasitic components and/or 
ESD protection circuitry are present on the aSC7621 
pins. Care should be taken not to forward bias the 
parasitic diode present on pins D+ and D-.  Doing so by 
more than 50mV may corrupt temperature 
measurements.   
Operating Ratings
1
Parameter 
Rating 
aSC7621 Operating 
Temperature Range, Ambient 
Temperature, T
MIN
 to T
MAX
Remote Diode Temperature 
Range 
Supply Voltage (3.3V 
nominal) 
V
IN
 Voltage Range 
+12V V
IN
+5V V
IN
+3.3V V
IN
VCCP and All Other Inputs  
Typical Supply Current 
0
°
C 
≤
 T
A
≤
 +120
°
C 
-55
°
C 
≤
 T
D
≤
 +125
°
C 
+3.0V to +3.6V 
-0.05V to 16V 
-0.05V to 6.5V 
3.0V to 4.4V 
-0.05V to V
DD
 + 0.05V 
1.8mA 
3. 
Thermal resistance junction-to-ambient when 
attached to a double-sided printed circuit board 
with 1oz. foil is 115
°
C/W
4. 
Human Body Model: 100pF capacitor discharged 
through a 1.5k
 
resistor into each pin. Machine 
Model: 200pF capacitor discharged directly into 
each pin. Charged-Device Model is per JESD22-
C101C.