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LM90 Datasheet(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM90
Description  3 Degree Celcious Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM90 Datasheet(HTML) 2 Page - National Semiconductor (TI)

 
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Connection Diagram
MSOP-8
20033702
TOP VIEW
Ordering Information
Package
Marking
NS Package
Number
Transport
Media
LM90CIMM
T11C
MUA08A
(MSOP-8)
1000 Units on
Tape and Reel
LM90CIMMX
T11C
MUA08A
(MSOP-8)
3500 Units on
Tape and Reel
Pin Descriptions
Label
Pin #
Function
Typical Connection
V
DD
1
Positive Supply Voltage
Input
DC Voltage from 3.0 V to 3.6 V
D+
2
Diode Current Source
To Diode Anode. Connected to remote discrete
diode conected transistor junction or to the diode
connected transistor junction on a remote IC whose
die temperature is being sensed.
D−
3
Diode Return Current Sink
To Diode Cathode.
T_CRIT_A
4
T_CRIT Alarm Output,
Open-Drain, Active-Low
Pull-Up Resistor, Controller Interrupt or Power
Supply Shutdown Control
GND
5
Power Supply Ground
Ground
ALERT
6
Interrupt Output,
Open-Drain, Active-Low
Pull-Up Resistor, Controller Interrupt or Alert Line
SMBData
7
SMBus Bi-Directional Data
Line, Open-Drain Output
From and to Controller, Pull-Up Resistor
SMBCLK
8
SMBus Input
From Controller, Pull-Up Resistor
www.national.com
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