MAX6581 Datasheet, PDF (1/24 Pages) Maxim Integrated Products – ±1°C Accurate 8-Channel Temperature Sensor

19-5260 ; Rev 0; 8/10
EVAALVUAAILTAIOBNLEKIT
±1°C Accurate 8-Channel Temperature Sensor
General Description
The MAX6581 precision multichannel temperature
sensor monitors its own temperature and the tempera-
tures of up to seven external diode-connected transis-
tors. All temperature channels have programmable alert
and overtemperature thresholds. When the measured
temperature of a channel crosses the respective thresh-
old, a status bit is set in one of the status registers. Two
open-drain alarm outputs (ALERT and OVERT) assert
corresponding to these bits in the status register(s).
Resistance cancellation is available for all channels and
compensates for high series resistance in circuit-board
traces and thermal diodes.
The 2-wire serial interface accepts SMBus™ protocols
(write byte, read byte, send byte, and receive byte) for
reading the temperature data and programming the
alarm thresholds.
The MAX6581 is specified for an operating temperature
range of -40NC to +125NC and is available in a 24-pin,
4mm x 4mm thin QFN package with an exposed pad.
Features
S Eight Channels to Measure Seven Remote and
One Local Temperature
S 11-Bit, 0.125NC Resolution
S High Accuracy of ±1NC (max) from +60NC to
+100NC (Remote Channels)
S -64NC to +150NC Remote Temperature Range
S Programmable Undertemperature/
Overtemperature Alerts
S SMBus/I²C-Compatible Interface
S Two Open-Drain Alarm Outputs (ALERT and
OVERT)
S Resistance Cancellation on All Remote Channels
Desktop Computers
Notebook Computers
Workstations
Servers
Data Communications
Applications
Ordering Information/Selector Guide
PART
SLAVE ADDRESS
PIN-PACKAGE
OPERATING
TEMPERATURE RANGE
MAX6581TG9A+
0X9A
24 TQFN-EP*
-40NC to +125NC
MAX6581TG9C+**
0X9C
24 TQFN-EP*
-40NC to +125NC
MAX6581TG9E+**
0X9E
24 TQFN-EP*
-40NC to +125NC
MAX6581TG98+**
0X98
24 TQFN-EP*
-40NC to +125NC
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
**Future product—contact factory for availability.
Note: These devices operate over the -40NC to +125NC operating temperature range.
Typical Application Circuit appears at end of data sheet.
MEASURED
TEMPERATURE RANGE
-64NC to +150NC
-64NC to +150NC
-64NC to +150NC
-64NC to +150NC
SMBus is a trademark of Intel Corp.
________________________________________________________________ Maxim Integrated Products   1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.