Product Summary
The LM81CIMTX-3 is a highly integrated data acquisition system for hardware monitoring of servers, Personal Computers, or virtually any microprocessor-based system. In a PC, the LM81 can be used to monitor power supply voltages, temperatures, and fan speeds. Actual values for these inputs can be read at any time. Applications include System Thermal and Hardware Monitoring for Servers and PCs, Office Electronics and Electronic Test Equipment and Instrumentation.
Parametrics
LM81CIMTX-3 absolute maximum ratings: (1)Positive Supply Voltage: +6.0V; (2)Input Current at any Pin: ±5 mA; (3)Package Input Current: ±20 mA; (4)Maximum Junction Temperature: 150℃; (5)Storage Temperature: ?65℃ to +150℃.
Features
LM81CIMTX-3 features: (1)Temperature sensing; (2)8-bit DAC output for controlling fan speed; (3)2 fan speed monitoring inputs; (4)Chassis Intrusion detector input; (5)WATCHDOG comparison of all monitored values; (6)SMBus 1.0 (LM81C) and 1.1 (LM81B) Serial Bus interface compatibility; (7)LM81B has improved voltage monitoring accuracy; (8)VID0-VID4 monitoring inputs.
Diagrams

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![]() LM81CIMTX-3/NOPB |
![]() National Semiconductor (TI) |
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(China (Mainland))










