ADT7481

Rev. 0 | Page 6 of 24

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

ADT7481

TOP VIEW

(Not to Scale)

D1+

2

D1–

3

4

GND

5

SCLK

SDATA

D2+

D2–

10

9

8

7

6

ALERT/THERM2

THERM

Figure 3. Pin Configuration

Table 4. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

Positive Supply, 3 V to 3.6 V.

2

D1+

Positive Connection to the Remote 1 Temperature Sensor.

3

D1−

Negative Connection to the Remote 1 Temperature Sensor.

4

THERM

Open-Drain Output. Requires pull-up resistor. Signals overtemperature events, could be used to turn a fan

on/off, or throttle a CPU clock.

5

GND

Supply Ground Connection.

6

D2−

Negative Connection to the Remote 2 Temperature Sensor.

7

D2+

Positive Connection to the Remote 2 Temperature Sensor.

8

ALERT/THERM2

Open-Drain Logic Output. Used as interrupt or SMBALERT. This may also be configured as a second THERM

output. Requires pull-up resistor.

9

SDATA

Logic Input/Output, SMBus Serial Data. Open-Drain Output. Requires pull-up resistor.

10

SCLK

Logic Input, SMBus Serial Clock. Requires pull-up resistor.