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LM84 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM84
Description  Diode Input 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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LM84 Datasheet(HTML) 3 Page - National Semiconductor (TI)

 
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Pin Descriptions
Label
Pin #
Function
Typical Connection
NC
1, 5, 9,
13, 16
Manufacturing test pins.
Left floating. PC board traces may be routed
through the pads for these pins. Although, the
components that drive these traces should share
the same supply as the LM84 so that the Absolute
Maximum Voltage at any Pin rating is not violated.
V
CC
2
Positive Supply Voltage
Input
DC Voltage from 3.0V to 3.6V
D+
3
Diode Current Source
To Diode Anode. Connected to remote discrete
diode or to the diode on the external IC whose die
temperature is being sensed.
D−
4
Diode Return Current
Sink
To Diode Cathode. Must be grounded when not
used.
ADD0–ADD1
10, 6
User-Set SMBus (I
2C)
Address Inputs
Ground (Low, “0”), V
CC (High, “1”) or open
(“TRI-LEVEL”)
GND
7, 8
Power Supply Ground
Ground
T_CRIT_A
11
Critical Temperature
Alarm, open-drain output
Pull Up Resistor, Controller Interrupt Line or
System Shutdown
SMBData
12
SMBus (I
2C) Serial
Bi-Directional Data Line,
open-drain output
From and to Controller, Pull Up Resistor
SMBCLK
14
SMBus (I
2C) Clock Input
From Controller
NC
15
No Connection
Left floating. PC board traces may be routed
through the pads for this pin.
www.national.com
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