Datasheet
MAX6685/MAX6686
Dual-Output Remote-Junction
Temperature Switches
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= 3.0V to 5.5V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
DD
= 3.3V and T
A
= +25°C.) (Note 1)
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.
Voltages Referenced to GND
V
DD,
T
LOW
, T
HIGH
.....................................................-0.3V to +6V
DXN .......................................................................-0.3V to +0.8V
All Other Pins..............................................-0.3V to (V
DD
+ 0.3V)
Input Current .........................................................................5mA
Output Current ....................................................................20mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C) .............330mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS
Power-Supply Range V
DD
3.0 5.5 V
Average Supply Current I
DD
200 500 µA
Supply Current During
Conversion
400 800 µA
Power-On Reset Threshold POR V
DD
falling edge 1.0 1.5 2.0 V
POR Threshold Hysteresis 50 mV
V
DD
= 3.3V, T
A
= +25°C, T
RJ
= 0°C to +125°C
(Note 2)
-1.5 +1.5
Temperature Threshold
Accuracy
∆T
TH
T
A
= 0°C to +100°C, T
RJ
= 0°C to +125°C 2.0
°C
Temperature Threshold
Hysteresis
T
HYST
5.0 °C
Supply Sensitivity of Temperature
Threshold
T
A
= +25°C, T
RJ
= 0°C to +125°C,
V
DD
= 3.0V to 5.5V
0.6 °C/V
Output Voltage High V
OH
I
SOURCE
= 1mA, MAX6685 T
LOW
only
V
DD
-
0.2
V
Output Voltage Low V
OL
I
SINK
= 1mA 0.2 V
Logic-Low Input Voltage V
IL
S1, S2 0.4 V
Logic-High Input Voltage V
IH
S1, S2 1.8 V
Input Current S1, S2 10 µA
Open-Drain Output Leakage
Current
V
OUT
= 5.5V, T
LOW
and T
HIGH
1µA
Conversion Time 0.09 0.11 0.13 s
Sample Period 0.35 0.45 0.55 s
High level 80 100 120
Current Sourcing for External
Diode
Low level 8 10 12
µA
Note 1: All parameters are tested at +25°C. Temperature specifications over a range of -40°C to +125°C are guaranteed by design.
Note 2: T
RJ
is the temperature of the remote-sensing diode junction.