C-compatible serial interface – Rainbow Electronics MAX6635 User Manual
Page 2
MAX6633/MAX6634/MAX6635
12-Bit Plus Sign Temperature Sensors with
SMBus/I
2
C-Compatible Serial Interface
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.0V to +5.5V, T
A
= -55°C to +125°C, unless otherwise noted. Typical values are V
CC
= +3.3V, T
A
= +25°C, unless other-
wise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
, SDA, SCL ......................................................-0.3V to +6.0V
All Other Pins ................................................-0.3V to V
CC
+0.3V
SDA,
ALERT, OVERT Current .............................-1mA to +50mA
ESD Protection (Human Body Model)................................2000V
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
Junction Temperature ......................................................+150°C
Operating Temperature Range .........................-55°C to +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
TEMPERATURE-TO-DIGITAL CONVERTER CHARACTERISTICS
Supply Range
V
CC
3.0
5.5
V
0
°C ≤ T
A
=
≤ +50°C, V
CC
= +3.3V
-1.0
±0.4
+1.0
-20
°C ≤ T
A
=
≤ +85°C, V
CC
= +3.3V
-1.5
±0.6
+1.5
-40
°C ≤ T
A
=
≤ 125°C, V
CC
= +3.3V
-2.5
±1.0
+2.5
T
A
= -55
°C, V
CC
= +3.3V
-2.8
±1.5
+2.8
Accuracy (Note 1)
T
A
= +150
°C, V
CC
= +3.3V
±2.5
°C
Power-Supply Rejection Ratio
PSRR
0.2
0.5
°C/V
POR Threshold Hysteresis
90
mV
V
CC
= +3.0V, SMBus inactive
12
20
Supply Current in Shutdown
V
CC
= +5.5V, SMBus inactive
20
30
µA
V
CC
= +3.0V, SMBus inactive
150
Average Operating Current
V
CC
= +5.5V, SMBus inactive
200
µA
V
CC
= +3.0V, SMBus inactive
270
350
Peak Operating Current (Note 2)
V
CC
= +5.5V, SMBus inactive
350
700
µA
Conversion Rate
1.4
2
2.4
Hz
DIGITAL INTERFACE
Logic Input Low Voltage
V
IL
V
CC
= +3.0V to +5.5V
0.65
V
V
CC
= +3V
2.2
Logic Input High
Voltage
V
IH
V
CC
= +5.5V
2.4
V
Input Leakage Current
I
I_LEAK
V
IN
= GND or V
CC
±1
µA
Output Low Sink Current
I
OL
V
OL
= 0.6V (SMBDATA,
ALERT, OVERT)
6
mA
Output Leakage Current
I
O_LEAK
ALERT, OVERT at V
CC
±1
µA
Input Capacitance
C
IN
5
pF