Datasheet

PCA9538 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 7 — 26 November 2014 5 of 34
NXP Semiconductors
PCA9538
8-bit I
2
C-bus and SMBus low power I/O port with interrupt and reset
5.2 Pin description
[1] HVQFN16 package die supply ground is connected to both the V
SS
pin and the exposed center pad. The
V
SS
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.
Table 3. Pin description
Symbol Pin Description
SO16, TSSOP16 HVQFN16
A0 1 15 address input 0
A1 2 16 address input 1
RESET
3 1 active LOW reset input
IO0 4 2 input/output 0
IO1 5 3 input/output 1
IO2 6 4 input/output 2
IO3 7 5 input/output 3
V
SS
86
[1]
supply ground
IO4 9 7 input/output 4
IO5 10 8 input/output 5
IO6 11 9 input/output 6
IO7 12 10 input/output 7
INT
13 11 interrupt output (open-drain)
SCL 14 12 serial clock line
SDA 15 13 serial data line
V
DD
16 14 supply voltage