Datasheet

PCA9512A_PCA9512B All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6 — 1 March 2013 4 of 27
NXP Semiconductors
PCA9512A; PCA9512B
Level shifting hot swappable I
2
C-bus and SMBus bus buffer
6. Block diagram
Fig 1. Block diagram of PCA9512A/B
002aag555
100 kΩ
RCH3
1 VOLT
PRECHARGE
100 kΩ
RCH4
100 kΩ
RCH1
100 kΩ
RCH2
CONNECT
BACKPLANE-TO-CARD
CONNECTION
SLEW RATE
DETECTOR
SLEW RATE
DETECTOR
CONNECT CONNECT
2 mA 2 mA
BACKPLANE-TO-CARD
CONNECTION
SLEW RATE
DETECTOR
SLEW RATE
DETECTOR
CONNECT
CONNECT
2 mA 2 mA
SDAIN
SCLIN
0.5 pF
SCLOUT
RD
S
QB
UVLO
20 pF
0.55V
CC
/
0.45V
CC
0.5 μA
STOP BIT AND
BUS IDLE
0.55V
CC
/
0.45V
CC
100 μs
DELAY
UVLO
SDAOUT
V
CC2
CONNECT
GND
PCA9512A/B
V
CC
ACC
CONNECT
ACC
ACC
LEVEL
SHIFTER