Specification	LM80CIMTX-3/NOPB

Accuracy	3 °C
Function	Hardware Monitor
Mounting Type	Surface Mount
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-25 °C
Output Alarm	False
Output Fan	False
Output Type	I2C
Package / Case	24-TSSOP
Package / Case	0.173 in, 4.4 mm
Sensing Temperature	External Sensor
Sensing Temperature [Max]	125 °C
Sensing Temperature [Min]	-25 °C
Sensor Type	Internal and External
Supplier Device Package	24-TSSOP
Topology	Fan Speed Counter, ADC, Register Bank, Comparator
Voltage - Supply [Max]	5.75 V
Voltage - Supply [Min]	2.8 V

LM80 Series

Part	Accuracy	Supplier Device Package	Voltage - Supply [Max]	Voltage - Supply [Min]	Package / Case	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Function	Sensing Temperature	Sensing Temperature [Min]	Sensing Temperature [Max]	Topology	Sensor Type	Output Type	Mounting Type
Texas Instruments LM80CIMTX-5/NOPB	3 °C	24-TSSOP	5.75 V	2.8 V	24-TSSOP	0.173 in 4.4 mm	125 °C	-25 °C	Hardware Monitor	External Sensor	-25 °C	125 °C	ADC Comparator Fan Speed Counter Register Bank	Internal and External	I2C	Surface Mount
Texas Instruments LM80CIMTX-3/NOPB	3 °C	24-TSSOP	5.75 V	2.8 V	24-TSSOP	0.173 in 4.4 mm	125 °C	-25 °C	Hardware Monitor	External Sensor	-25 °C	125 °C	ADC Comparator Fan Speed Counter Register Bank	Internal and External	I2C	Surface Mount
Texas Instruments LM80CIMT-3/NOPB	3 °C	24-TSSOP	5.75 V	2.8 V	24-TSSOP	0.173 in 4.4 mm	125 °C	-25 °C	Hardware Monitor	External Sensor	-25 °C	125 °C	ADC Comparator Fan Speed Counter Register Bank	Internal and External	I2C	Surface Mount

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	2500	$ 13.91
Texas Instruments	LARGE T&R	1	$ 20.87
		100	$ 18.23
		250	$ 14.05
		1000	$ 12.57

Description

General part information

LM80 Series

The LM80 provides 7 positive voltage inputs, temperature measurement, fan speed measurement, and hardware monitoring on an I2C interface. The LM80 performs WATCHDOG comparisons of all measured values and an open-drain interrupt output becomes active when any values exceed programmed limits. A Chassis Intrusion input is provided to monitor and reset an external circuit designed to latch a chassis intrusion event.

The LM80 is especially suited to interface to both linear and digital temperature sensors. The 10 mV LSB and 2.56 volt input range is ideal for accepting inputs from a linear sensor such as the LM50. TheBTIis used as an input from either digital or thermostat sensors such as LM75 and LM56.

The LM80's 2.8V to 5.75V supply voltage range, low supply current, and I2C interface make it ideal for a wide range of applications. These include hardware monitoring and protection applications in personal computers, electronic test equipment, and office electronics.

Documents

Technical documentation and resources

LM80 Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor datasheet (Rev. F)

Data sheet