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ON Semiconductor - Industry Standard Digital Temperature Sensor

Numéro de référence NCT75
Description Industry Standard Digital Temperature Sensor
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NCT75 fiche technique
NCT75
Industry Standard Digital
Temperature Sensor with
2‐wire Interface
The NCT75 is a two-wire serially programmable temperature
sensor with an over-temperature/interrupt output pin to signal out of
limit conditions. This is an open-drain pin and can operate in either
comparator or interrupt mode. Temperature measurements are
converted into digital form using a high resolution (12 bit),
sigma-delta, analog-to-digital converter (ADC). The device operates
over the –55°C to +125°C temperature range.
Communication with the NCT75 is accomplished via the
SMBus/I2C interface. Three address selection pins, A2, A1 and A0,
can be used to connect up to 8 NCT75s to a single bus. Through this
interface the NCT75s internal registers may be accessed. These
registers allow the user to read the current temperature, change the
configuration settings and adjust the temperature limits.
The NCT75 has a wide supply voltage range of 3.0 V to 5.5 V. The
average supply current is 575 mA at 3.3 V. It also offers a shutdown
mode to conserve power. The typical shutdown current is 3 mA.
The NCT75 is available in three, space saving packages – 8-lead
DFN, 8-lead Micro8t and 8-lead SOIC and is also fully pin and
register compatible with the LM75 and TCN75.
Features
12-bit Temperature-to-Digital Converter
Input Voltage Range from 3.0 V to 5.5 V
Temperature Range from −55°C to +125°C
SMBus/I2C Interface
Overtemperature Indicator
Support for SMBus/ALERT
Shutdown Mode for Low Power Consumption
One-shot Mode
Available in 8-pin DFN, 8-pin Micro8t and SOIC Packages
These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
Computer Thermal Monitoring
Thermal Protection
Isolated Sensors
Battery Management
Office Electronics
Electronic Test Equipment
Thermostat Controls
System Thermal Management
http://onsemi.com
DFN8
CASE 506AA
SOIC8
CASE 751
Micro8t
CASE 846A
PIN ASSIGNMENT
SDA 1
SCL 2
OS/ALERT 3
GND 4
(Top View)
8 VDD
7 A0
6 A1
5 A2
MARKING DIAGRAMS
1
75MG
G
DFN8
8
CT75
AYWG
G
1
Micro8t
M = Date Code
A = Assembly Location
Y = Year
W = Work Week
G = Pb-Free Package
(Note: Microdot may be in either location)
8
NCT75
ALYWX
G
1
SOIC8
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb-Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
May, 2014 − Rev. 6
1
Publication Order Number:
NCT75/D

PagesPages 15
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