MAX6514UKP045-T Maxim Integrated Products, MAX6514UKP045-T Datasheet - Page 4

• Manufacturer Part Number: MAX6514UKP045-T
• Description: Board Mount Temperature Sensors
• Manufacturer: Maxim Integrated Products

Specifications of MAX6514UKP045-T

• Temperature Threshold: + 45 C
• Full Temp Accuracy: +/- 1 C
• Package / Case: SOT-23
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Output Type: Digital
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Low-Cost, 2.7V to 5.5V Temperature Switches
in a SOT23
The MAX6514/MAX6515 fully integrated temperature
switches incorporate a fixed reference, an analog tem-
perature sensor, and a comparator. Pin-selectable 2°C
or 10°C hysteresis keeps the digital output from oscil-
lating when the die temperature approaches the
threshold temperature. The MAX6514 has an active-
high, push-pull output structure that can sink or source
current. The MAX6515 has an active-low, open-drain
output structure that can only sink current. The internal
power-on reset circuit guarantees the logic output is at
its +25°C state for at least 50µs.
The HYST input selects the devices’ temperature hys-
teresis and prevents the output from oscillating when the
temperature approaches the trip point. Connect HYST to
V
4
MAX6514
CC
_______________________________________________________________________________________
1, 2
—
—
for 2°C hysteresis or to GND for 10°C hysteresis.
3
4
5
5
PIN
MAX6515
1, 2
—
—
3
4
5
5
Detailed Description
TUNDER
TUNDER
TOVER
TOVER
NAME
HYST
GND
V
CC
Ground
Hysteresis Input. Connect to V
Input Supply. Bypass to ground with a 0.1µF capacitor.
Push-Pull Active-High Output (Hot Threshold). TOVER goes high when the die temperature
exceeds the factory-programmed hot-temperature threshold.
Open-Drain, Active-Low Output (Hot Threshold). TOVER goes low when the die temperature
exceeds the factory-programmed hot-temperature threshold. Connect to a 100kΩ pullup
resistor. Can be pulled up to a voltage higher than V
Push-Pull Active-High Output (Cold Threshold). TUNDER goes high when the die temperature
falls below the factory-programmed cold-temperature threshold.
Open-Drain, Active-Low Output (Cold Threshold). TUNDER goes low when the die
temperature goes below the factory-programmed cold-temperature threshold. Connect to a
100kΩ pullup resistor. Can be pulled up to a voltage higher than V
Hysteresis Input
CC
TOVER and TOVER designations apply to thresholds
above T
+75°C, +85°C, +95°C, +105°C, and +115°C). All “hot”
thresholds are positive temperatures.
The overtemperature indicator output is open drain
active low (TOVER) or push-pull active high (TOVER).
TOVER goes low when the die temperature exceeds
the factory-programmed temperature threshold. TOVER
should be pulled up to a voltage no greater than 5.5V
with a 100kΩ pullup resistor. TOVER is a push-pull
active-high CMOS output that goes high when the die
temperature exceeds the factory-programmed temper-
ature threshold.
TUNDER and TUNDER designations apply to thresh-
olds below T
-25°C, -35°C, -45°C). The undertemperature indicator
output is open-drain, active low (TUNDER) or push-pull,
active high (TUNDER). TUNDER goes low when the die
temperature goes below the factory-programmed tem-
perature threshold. TUNDER should be pulled up to a
voltage no greater than 5.5V with a 100kΩ pullup resis-
tor. TUNDER is a push-pull active-high CMOS output
that goes high when the die temperature falls below the
factory-programmed temperature threshold.
for 2°C of hysteresis or to GND for 10°C hysteresis.
Undertemperature Indicator (Cold Thresholds)
Overtemperature Indicator (Hot Thresholds)
A
FUNCTION
= +25°C (+35°C, +45°C, +55°C, +65°C,
A
= +25°C (+15°C, +5°C, -5°C, -15°C,
Logic Temperature Indicators
CC
.
CC
Pin Description
.