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LM85 bảng dữ liệu(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện LM85
Giải thích chi tiết về linh kiện  Hardware Monitor with Integrated Fan Control
PDF  26 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM85 bảng dữ liệu(HTML) 3 Page - National Semiconductor (TI)

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Pin Descriptions (Continued)
Symbol
Pin
Typ
Name and Function/Connection
Remote1+
18
Remote Thermal
Diode Positive
Input
Positive input (current source) from the first remote thermal diode.
Serves as the positive input into the A/D. Connected to
THERMDA pin of Pentium processor or the base of a diode
connected MMBT3904 NPN transistor.
Remote1−
17
Remote Thermal
Diode Negative
Input
Negative input (current sink) from the first remote thermal diode.
Serves as the negative input into the A/D. Connected to
THERMDC pin of Pentium processor or the emmiter of a diode
connected MMBT3904 NPN transistor.
Remote2+
16
Remote Thermal
Diode Positive
Output
Positive input (current source) from the first remote thermal diode.
Serves as the positive input into the A/D. Connected to
THERMDA pin of Pentium processor or the base of a diode
connected MMBT3904 NPN transistor.
Remote2−
15
Remote Thermal
Diode Negative
Input
Negative input (current sink) from the first remote thermal diode.
Serves as the negative input into the A/D. Connected to
THERMDC pin of Pentium processor or the emmiter of a diode
connected MMBT3904 NPN transistor.
TACH1
11
Digital Input
Input for monitoring tachometer output of fan 1.
TACH2
12
Digital Input
Input for monitoring tachometer output of fan 2.
TACH3
9
Digital Input
Input for monitoring tachometer output of fan 3.
TACH4/Address
Select
14
Digital Input
Input for monitoring tachometer output of fan 4. If in Address
Select Mode, determines the SMBus address of the LM85.
PWM1/xTest
Out
24
Digital Open-Drain
Output
Fan speed control 1. When in XOR tree test mode, functions as
XOR Tree output.
PWM2
10
Digital Open-Drain
Output
Fan speed control 2.
PWM3/Address
Enable
13
Digital Open-Drain
Output
Fan speed control 3. Pull to ground at power on to enable
Address Select Mode (Address Select pin controls SMBus
address of the device).
www.national.com
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