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TMP421 PIN CONFIGURATION

1

2

3

4

8

7

6

5

V+

SCL

GND

DXP

DXN

A1

A0

SDA

TMP421

TMP422 PIN CONFIGURATION

1

2

3

4

8

7

6

5

V+

SCL

GND

DX1

DX2

DX3

DX4

SDA

TMP422

TMP421

TMP422

TMP423

SBOS398B – JULY 2007 – REVISED MARCH 2008

DCN PACKAGE

SOT23-8

(TOP VIEW)

TMP421 PIN ASSIGNMENTS

TMP421

NO.

NAME

DESCRIPTION

1

DXP

Positive connection to remote temperature sensor.

2

DXN

Negative connection to remote temperature sensor.

3

A1

Address pin

4

A0

Address pin

5

GND

Ground

6

SDA

Serial data line for SMBus, open-drain; requires pull-up resistor to V+.

7

SCL

Serial clock line for SMBus, open-drain; requires pull-up resistor to V+.

8

V+

Positive supply voltage (2.7V to 5.5V)

DCN PACKAGE

SOT23-8

(TOP VIEW)

TMP422 PIN ASSIGNMENTS

TMP422

NO.

NAME

DESCRIPTION

1

DX1

Channel 1 remote temperature sensor connection pin. Also sets the TMP422 address; see Table 10.

2

DX2

Channel 1 remote temperature sensor connection pin. Also sets the TMP422 address; see Table 10.

3

DX3

Channel 2 remote temperature sensor connection pin. Also sets the TMP422 address; see Table 10.

4

DX4

Channel 2 remote temperature sensor connection pin. Also sets the TMP422 address; see Table 10.

5

GND

Ground

6

SDA

Serial data line for SMBus, open-drain; requires pull-up resistor to V+.

7

SCL

Serial clock line for SMBus, open-drain; requires pull-up resistor to V+.

8

V+

Positive supply voltage (2.7V to 5.5V)

4

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Product Folder Link(s): TMP421 TMP422 TMP423