Datasheet Texas Instruments LM81
| Manufacturer | Texas Instruments |
| Series | LM81 |
Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor
Datasheets
Serial Interface ACP-Compatible Microprocessor Sys Hardware Monitor datasheet
PDF, 2.1 Mb, Revision: E, File published: Sep 5, 2013
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Prices
Status
| LM81BIMT-3/NOPB | LM81BIMTX-3/NOPB | LM81CIMT-3/NOPB | LM81CIMTX-3/NOPB | |
|---|---|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes | No | No | Yes |
Packaging
| LM81BIMT-3/NOPB | LM81BIMTX-3/NOPB | LM81CIMT-3/NOPB | LM81CIMTX-3/NOPB | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Pin | 24 | 24 | 24 | 24 |
| Package Type | PW | PW | PW | PW |
| Industry STD Term | TSSOP | TSSOP | TSSOP | TSSOP |
| JEDEC Code | R-PDSO-G | R-PDSO-G | R-PDSO-G | R-PDSO-G |
| Package QTY | 61 | 2500 | 61 | 2500 |
| Carrier | TUBE | LARGE T&R | TUBE | LARGE T&R |
| Device Marking | BIMT-3 | LM81 | LM81 | LM81 |
| Width (mm) | 4.4 | 4.4 | 4.4 | 4.4 |
| Length (mm) | 7.8 | 7.8 | 7.8 | 7.8 |
| Thickness (mm) | 1 | 1 | 1 | 1 |
| Pitch (mm) | .65 | .65 | .65 | .65 |
| Max Height (mm) | 1.2 | 1.2 | 1.2 | 1.2 |
| Mechanical Data | Download | Download | Download | Download |
Parametrics
| Parameters / Models | LM81BIMT-3/NOPB | LM81BIMTX-3/NOPB | LM81CIMT-3/NOPB | LM81CIMTX-3/NOPB |
|---|---|---|---|---|
| Analog Inputs | 6 | 6 | 6 | 6 |
| Fan Control Method | Manual | Manual | Manual | Manual |
| Fan Control Output, s | 1 DAC | 1 DAC | 1 DAC | 1 DAC |
| Fan Speed Inputs | 2 | 2 | 2 | 2 |
| Fan Speed Measurement Accuracy, % | 10 | 10 | 10 | 10 |
| GPIOs | 5 VID, Chassis Intrusion, 2 TACH, DAC OUT, INT, TCRIT, RESET | 5 VID, Chassis Intrusion, 2 TACH, DAC OUT, INT, TCRIT, RESET | 5 VID, Chassis Intrusion, 2 TACH, DAC OUT, INT, TCRIT, RESET | 5 VID, Chassis Intrusion, 2 TACH, DAC OUT, INT, TCRIT, RESET |
| Interface | SMBus | SMBus | SMBus | SMBus |
| Interrupt Outputs, Count | 2 | 2 | 2 | 2 |
| No. of Temperature Sensors | 1 | 1 | 1 | 1 |
| Operating Temperature Range, C | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Package Group | TSSOP | TSSOP | TSSOP | TSSOP |
| Package Size: mm2:W x L, PKG | 24TSSOP: 50 mm2: 6.4 x 7.8(TSSOP) | 24TSSOP: 50 mm2: 6.4 x 7.8(TSSOP) | 24TSSOP: 50 mm2: 6.4 x 7.8(TSSOP) | 24TSSOP: 50 mm2: 6.4 x 7.8(TSSOP) |
| Quiescent Current, mA | 0.9 | 0.9 | 0.9 | 0.9 |
| Rating | Catalog | Catalog | Catalog | Catalog |
| Supply Current(Max), mA | 0.9 | 0.9 | 0.9 | 0.9 |
| Supply Voltage(Max), V | 3.8 | 3.8 | 3.8 | 3.8 |
| Supply Voltage(Min), V | 2.8 | 2.8 | 2.8 | 2.8 |
| Temperature Sensor Accuracy, C | 3 | 3 | 3 | 3 |
| Temperature Sensor Resolution, C | 0.0625 | 0.0625 | 0.0625 | 0.0625 |
| TruTherm, TM | N/A | N/A | N/A | N/A |
| VID Inputs | 5 | 5 | 5 | 5 |
| Voltage in ADC Resolution, bits | 8 | 8 | 8 | 8 |
Eco Plan
| LM81BIMT-3/NOPB | LM81BIMTX-3/NOPB | LM81CIMT-3/NOPB | LM81CIMTX-3/NOPB | |
|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant |
Application Notes
- Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A)PDF, 33 Kb, Revision: A, File published: May 6, 2013
This Application Note describes a method of interfacing a given microcontroller with a Texas Instruments digital temperature sensor. - Sensing and Monitoring for Control and Protection SeminarPDF, 245 Kb, File published: Feb 17, 2003
Model Line
Series: LM81 (4)
Manufacturer's Classification
- Semiconductors> Sensing Products> Monitoring & Fan Control
