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Fabricante

9538

8-bit I2C-bus and SMBus low power I/O port with interrupt and reset

NXP Semiconductors. 

NXP Semiconductors

PCA9538

8-bit I2C-bus and SMBus low power I/O port with interrupt and reset

5.2 Pin description

Table 2.

Symbol

A0

A1

RESET

IO0

IO1

IO2

IO3

VSS

IO4

IO5

IO6

IO7

INT

SCL

SDA

VDD

Pin description

Pin

SO16, TSSOP16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Description

HVQFN16

15

address input 0

16

address input 1

1

active LOW reset input

2

input/output 0

3

input/output 1

4

input/output 2

5

input/output 3

6[1]

supply ground

7

input/output 4

8

input/output 5

9

input/output 6

10

input/output 7

11

interrupt output (open-drain)

12

serial clock line

13

serial data line

14

supply voltage

[1] HVQFN16 package die supply ground is connected to both the VSS pin and the exposed center pad. The

VSS pin must be connected to supply ground for proper device operation. For enhanced thermal, electrical,

and board-level performance, the exposed pad needs to be soldered to the board using a corresponding

thermal pad on the board, and for proper heat conduction through the board thermal vias need to be

incorporated in the printed-circuit board in the thermal pad region.

PCA9538_5

Product data sheet

Rev. 05 — 28 May 2009

© NXP B.V. 2009. All rights reserved.

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