Datasheet

PCA9548A All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 5 — 31 March 2014 5 of 30
NXP Semiconductors
PCA9548A
8-channel I
2
C-bus switch with reset
5.2 Pin description
[1] HVQFN24 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 PCB in the thermal pad region.
Table 3. Pin description
Symbol Pin Description
SO24, TSSOP24 HVQFN24
A0 1 22 address input 0
A1 2 23 address input 1
RESET
3 24 active LOW reset input
SD0 4 1 serial data 0
SC0 5 2 serial clock 0
SD1 6 3 serial data 1
SC1 7 4 serial clock 1
SD2 8 5 serial data 2
SC2 9 6 serial clock 2
SD3 10 7 serial data 3
SC3 11 8 serial clock 3
V
SS
12 9
[1]
supply ground
SD4 13 10 serial data 4
SC4 14 11 serial clock 4
SD5 15 12 serial data 5
SC5 16 13 serial clock 5
SD6 17 14 serial data 6
SC6 18 15 serial clock 6
SD7 19 16 serial data 7
SC7 20 17 serial clock 7
A2 21 18 address input 2
SCL 22 19 serial clock line
SDA 23 20 serial data line
V
DD
24 21 supply voltage