LM87CIMT National Semiconductor, LM87CIMT Datasheet - Page 5

• Manufacturer Part Number: LM87CIMT
• Description: Temperature Sensor IC
• Manufacturer: National Semiconductor

Specifications of LM87CIMT

• Peak Reflow Compatible (260 C): No
• Ic Function: Temperature Sensor IC
• Supply Voltage Max: 3.8V
• Leaded Process Compatible: No
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C To +125°C
• Temperature Sensor Function: Temp Sensor
• Interface Type: Serial (2-Wire)
• Output Type: Digital
• Package Type: TSSOP
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Operating Temperature Classification: Automotive
• Operating Supply Voltage (typ): 3.3V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

FAN RPM-TO-DIGITAL CONVERTER
DIGITAL OUTPUTS (NTEST_OUT)
OPEN- DRAIN DIGITAL OUTPUTS (SMBData, RESET#, CI, INT#, THERM#)
DIGITAL INPUTS: VID0–VID4, NTEST_IN, ADD/NTEST_OUT, Chassis Intrusion (CI)
SMBus DIGITAL INPUTS (SMBCLK, SMBData)
Tach Pulse Logic Inputs (FAN1, FAN2)
ALL DIGITAL INPUTS
Symbol
V
V
V
V
V
V
V
V
V
V
V
I
I
OUT(1)
OUT(0)
OUT(0)
OUT(0)
I
C
HYST
IN(1)
IN(0)
R
C
IN(1)
IN(0)
IN(1)
IN(0)
IN(1)
IN(0)
OH
IN
L
L
DAC Error
Output Load Resistance
Output Load Capacitance
Fan RPM Error
Full-scale Count
FAN1 and FAN2 Nominal Input
RPM (See Section 6.0)
Logical “1” Output Voltage
Logical “0” Output Voltage
Logical “0” Output Voltage (SMBData)
Logical “0” Output Voltage (Others)
High Level Output Current
RESET# and Chassis Intrusion
Pulse Width
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Input Voltage
Logical “0” Input Voltage
Input Hysteresis Voltage
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Input Current
Logical “0” Input Current
Digital Input Capacitance
Parameter
0 °C
V, Code = 255
V
192
0 °C
3.3 V, Code =
V
+25 °C
−10 °C
−40 °C
Divisor = 1, Fan Count = 153
(Note
Divisor = 2, Fan Count = 153
(Note
Divisor = 3, Fan Count = 153
(Note
Divisor = 4, Fan Count = 153
(Note
I
V
I
V
I
I
V
V
V
OUT
OUT
OUT
OUT
+
O
+
+
OUT
IN
IN
= 3.3 V, 3/4 Scale, code
= +2.8 V
= +3.8 V
= 2.5 V
= V
= 0 V
= ±3.0 mA at
= ±3.0 mA at
= −755 μA
= −3 mA
≤
≤
= V
5
16)
16)
16)
16)
T
T
+
≤
≤
≤
Conditions
A
A
+
DC
T
T
T
≤
≤
A
A
A
+75 °C, V
+75 °C, V, V
≤
≤
≤
8(Note
+75 °C
+100 °C
+125 °C
+
15)
= 3.3
+
=
(Note
Typical
8800
4400
2200
1100
+3.7
243
45
20
5
9)
(Note
0.7 × V
0.3 × V
Limits
1250
-3.3
±10
±15
±20
255
−12
2.4
0.4
0.4
0.4
2.0
0.8
2.1
0.8
±3
20
12
20
12
10)
+
+
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μA (max)
μA (max)
pF (max)
ms (min)
μA (min)
% (max)
% (max)
% (max)
% (max)
(Limits)
V (max)
V (max)
V (max)
V (max)
% (min)
Ω (min)
V (min)
V (min)
V (min)
V (min)
V (min)
V (min)
(max)
Units
RPM
RPM
RPM
RPM
mV
pF
%