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TC74A5-50VCTTR

CategoryThe sensor   
File Size246KB,17 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
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Parameter NameAttribute value
Product CategoryBoard Mount Temperature Sensors
ManufacturerMicrochip
RoHSDetails
Output TypeDigital
ConfigurationLocal
Accuracy+/- 2 C to +/- 3 C
Maximum Operating Temperature+ 125 C
Minimum Operating Temperature- 40 C
Interface Type2-Wire, I2C, SMBus
Resolution8 bit
Supply Voltage - Max5.5 VDC
Supply Voltage - Min2.7 VDC
ShutdownShutdown
Mounting StyleSMD/SMT
Package / CaseSOT-23-5
ProductSensor
PackagingReel
PackagingMouseReel
PackagingCut Tape
Operating Supply Current350 uA
Output Current50 mA
Factory Pack Quantity3000
M
Tiny Serial Digital Thermal Sensor
Features
• Digital Temperature Sensing in SOT-23-5 or
TO-220 Packages
• Outputs Temperature as an 8-Bit Digital Word
• Simple SMBus/I
2
C™ Serial Port Interface
• Solid-State Temperature Sensing:
- ±2°C (max.) Accuracy from +25°C to +85°C
- ±3°C (max.) Accuracy from 0°C to +125°C
• Supply Voltage of 2.7V to 5.5V
• Low Power:
- 200 µA (typ.) Operating Current
- 5 µA (typ.) Standby Mode Current
TC74
General Description
The TC74 is a serially accessible, digital temperature
sensor particularly suited for low cost and small form-
factor applications. Temperature data is converted from
the onboard thermal sensing element and made
available as an 8-bit digital word.
Communication with the TC74 is accomplished via a 2-
wire SMBus/I
2
C compatible serial port. This bus also
can be used to implement multi-drop/multi-zone
monitoring. The SHDN bit in the CONFIG register can
be used to activate the low power Standby mode.
Temperature resolution is 1°C. Conversion rate is a
nominal 8 samples/sec. During normal operation, the
quiescent current is 200 µA (typ). During standby
operation, the quiescent current is 5 µA (typ).
Small size, low installed cost and ease of use make the
TC74 an ideal choice for implementing thermal
management in a variety of systems.
Applications
• Thermal Protection for Hard Disk Drives
and other PC Peripherals
• PC Card Devices for Notebook Computers
• Low Cost Thermostat Controls
• Power Supplies
• Thermistor Replacement
Functional Block Diagram
Package Types
TO-220
SDA
5
TC74
123 45
Internal Sensor
(Diode)
SDA
Serial Port
Interface
SCLK
SOT-23
SCLK
4
TC74
1
2
GND
3
V
DD
Temperature
Register
∆Σ
Modulator
Control
Logic
2002 Microchip Technology Inc.
NC
SDA
GND
SCLK
VDD
NC
Note: The TO-220 tab is connected
to pin 3 (GND)
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