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LM87CIMTX/NOPB from NSC,National Semiconductor

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LM87CIMTX/NOPB

Manufacturer: NSC

Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing 24-TSSOP -40 to 125

Partnumber Manufacturer Quantity Availability
LM87CIMTX/NOPB,LM87CIMTXNOPB NSC 290 In Stock

Description and Introduction

Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing 24-TSSOP -40 to 125 The LM87CIMTX/NOPB is a System Hardware Monitor IC manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features:  

### **Specifications:**  
- **Manufacturer:** National Semiconductor (NSC)  
- **Type:** System Hardware Monitor  
- **Package:** 24-TSSOP  
- **Operating Temperature:** 0°C to +85°C  
- **Supply Voltage:** 3V to 3.6V  
- **Interface Type:** SMBus (System Management Bus)  
- **Resolution:** 8-bit ADC for voltage monitoring  
- **Number of Channels:**  
  - **Voltage Monitoring:** 6 channels  
  - **Temperature Monitoring:** 2 channels (internal and external)  
  - **Fan Speed Monitoring:** 2 channels  

### **Descriptions:**  
The LM87CIMTX/NOPB is a hardware monitoring IC designed for system management in computers and embedded applications. It monitors multiple system parameters, including voltages, temperatures, and fan speeds, and communicates with the host system via the SMBus interface.  

### **Features:**  
- Monitors **six voltage inputs** (including +3.3V, +5V, +12V, and other system voltages).  
- **Two temperature sensors** (one internal and one external diode-connected transistor).  
- **Two fan speed monitoring inputs** with tachometer measurement.  
- Programmable **high/low limits** with alert functionality.  
- **SMBus 2.0 compliant** interface.  
- **8-bit ADC** for voltage and temperature measurements.  
- **Low power consumption** suitable for embedded systems.  
- **24-pin TSSOP package** for space-constrained applications.  

This IC is commonly used in **PC motherboards, servers, and industrial systems** for real-time monitoring and fault detection.  

Would you like additional details on any specific feature?

Application Scenarios & Design Considerations

Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing 24-TSSOP -40 to 125
Partnumber Manufacturer Quantity Availability
LM87CIMTX/NOPB,LM87CIMTXNOPB NSC 141 In Stock

Description and Introduction

Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing 24-TSSOP -40 to 125 The **LM87CIMTX/NOPB** is a system hardware monitor and fan controller manufactured by **National Semiconductor (NSC)**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** National Semiconductor (NSC)  
- **Type:** System Hardware Monitor & Fan Controller  
- **Package:** 24-TSSOP  
- **Operating Voltage:** 3.0V to 3.6V  
- **Temperature Range:** 0°C to +85°C  
- **Interface:** SMBus (System Management Bus)  
- **Resolution:** 8-bit ADC for temperature and voltage monitoring  
- **Fan Control:** Supports up to 3 fans with programmable PWM outputs  
- **Alarm Functions:** Programmable thresholds for temperature, voltage, and fan speed  

### **Descriptions:**
The LM87CIMTX/NOPB is designed to monitor critical system parameters, including temperature, voltage, and fan speeds in PCs and embedded systems. It communicates with the host system via the SMBus interface and provides programmable alarms for fault detection.

### **Features:**
- **Voltage Monitoring:** Tracks multiple supply voltages (VCCP, +3.3V, +5V, +12V, etc.)  
- **Temperature Sensing:** Supports two remote diode sensors (e.g., CPU) and one internal sensor  
- **Fan Speed Monitoring:** Measures RPM of up to three fans  
- **Programmable PWM Fan Control:** Adjusts fan speed based on temperature thresholds  
- **SMBus Interface:** Compatible with System Management Bus 1.1  
- **Alert Function:** Generates interrupts for out-of-range conditions  

This IC is commonly used in desktop PCs, servers, and industrial systems for thermal and power management.

Application Scenarios & Design Considerations

Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing 24-TSSOP -40 to 125

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