LM99-1CIMMX National Semiconductor, LM99-1CIMMX Datasheet - Page 2

• Manufacturer Part Number: LM99-1CIMMX
• Description: 1C Accurate / High Temperature / Remote Diode Temperature Sensor with Two-Wire Interface
• Manufacturer: National Semiconductor

www.national.com
Connection Diagram
Ordering Information
Pin Descriptions
T_CRIT_A
SMBData
SMBCLK
ALERT
Label
GND
V
D+
D−
DD
LM99CIMM
LM99-1CIMM
LM99CIMMX
LM99-1CIMMX
Part Number
Pin #
1
2
3
4
5
6
7
8
Positive Supply Voltage Input
Diode Current Source
Diode Return Current Sink
T_CRIT Alarm Output,
Open-Drain, Active-Low
Power Supply Ground
Interrupt Output, Open-Drain,
Active-Low
SMBus Bi-Directional Data
Line, Open-Drain Output
SMBus Input
Package
Marking
T17C
T20C
T17C
T20C
Function
TOP VIEW
MSOP-8
2
DC Voltage from 3.0 V to 3.6 V. V
with a 0.1 µF capacitor in parallel with 100 pF to ground.
The 100 pF capacitor should be placed as close as
possible to the power supply pin. A bulk capacitance of
approximately 10 µF needs to be in the vicinity of the LM99
V
To Diode Anode. Connected to the collector and base of
the remote discrete diode-connected transistor. Connect a
2.2 nF capacitor between pins 2 and 3.
To Diode Cathode. Connects to the emitter of the remote
diode-connected transistor. Connect a 2.2 nF capacitor
between pins 2 and 3.
Pull-Up Resistor, Controller Interrupt or Power Supply
Shutdown Control
Ground
Pull-Up Resistor, Controller Interrupt or Alert Line
From and to Controller, Pull-Up Resistor
From Controller, Pull-Up Resistor
DD
NS Package
(MSOP-8)
(MSOP-8)
(MSOP-8)
(MSOP-8)
MUA08A
MUA08A
MUA08A
MUA08A
.
Number
20053802
Typical Connection
1000 Units on
Tape and Reel
1000 Units on
Tape and Reel
3500 Units on
Tape and Reel
3500 Units on
Tape and Reel
DD
Transport
Media
should be bypassed