Datasheet

PCA9545A_45B_45C All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 9 — 5 May 2014 3 of 32
NXP Semiconductors
PCA9545A/45B/45C
4-channel I
2
C-bus switch with interrupt logic and reset
4. Block diagram
Fig 1. Block diagram of PCA9545A/45B/45C
SWITCH CONTROL LOGIC
PCA9545A/PCA9545B/PCA9545C
POWER-ON
RESET
002aab168
SC0
SC1
SC2
SC3
SD0
SD1
SD2
SD3
V
SS
V
DD
RESET
I
2
C-BUS
CONTROL
INPUT
FILTER
SCL
SDA
A0
A1
INTERRUPT LOGIC
INT0
to
INT3
INT