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Numéro de référence | MC74A1 | ||
Description | Serial Digital Temperature Sensor | ||
Fabricant | ON Semiconductor | ||
Logo | |||
MC74
Serial Digital
Temperature Sensor
The MC74 is a serial digital temperature sensor suited for low cost
applications. Temperature data is converted from the integrated
thermal sensing element and made available as an 8–bit serial digital
word. Communication with the MC74 is accomplished via 2–wire
SMBus/I2C–compatible serial port. Temperature resolution is 1°C.
Conversion rate is a nominal 8 samples/sec. Power consumption is
only 200 µA (5.0 µA Standby).
Features
• Temperature Range: –40°C to +125°C
• Outputs Temperature as an 8–Bit Digital Word
• Simple Serial Port Interface
• Solid State Temperature Sensing:
±2°C Accuracy from +25°C to +85°C
±3°C Accuracy from 0°C to +125°C
• 3.3 V and 5.5 V Operating Range
• Low Power
200 µA Operations
5.0 µA Standby Mode
Typical Applications
• Thermal Protection for Hard Disk Drives and Other PC Peripherals
• Low–Cost Thermostat Controls
• Power Supplies
FUNCTIONAL BLOCK DIAGRAM
Internal Sensor
(Diode)
Serial Port
Interface
DS Modulator
Control
Logic
Temperature
Register
SDA
SCL
http://onsemi.com
5
1
2
3
4
SOT–23
SN SUFFIX
CASE 1212
1
5
TO–220
T SUFFIX
CASE 314D
PIN CONNECTIONS
NC 1
5 SDA
GND 2
VDD 3
4 SCL
(Top View)
SOT–23A*
NOTE: *SOT–23A is equivalent to EIAJ–SC74A
ORDERING INFORMATION
See detailed ordering and shipping information on page 9 of
this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2000
November, 2000 – Rev. 1
1
Publication Order Number:
MC74/D
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Pages | Pages 12 | ||
Télécharger | [ MC74A1 ] |
No | Description détaillée | Fabricant |
MC74A0 | Serial Digital Temperature Sensor | ON Semiconductor |
MC74A1 | Serial Digital Temperature Sensor | ON Semiconductor |
MC74A2 | Serial Digital Temperature Sensor | ON Semiconductor |
MC74A3 | Serial Digital Temperature Sensor | ON Semiconductor |
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