PCA9512 Philips Semiconductors, PCA9512 Datasheet - Page 3

• Manufacturer Part Number: PCA9512
• Description: Level shifting hot swappable I2C and SMBus buffer
• Manufacturer: Philips Semiconductors

Philips Semiconductors
TYPICAL APPLICATION
BLOCK DIAGRAM
2004 Oct 05
Level shifting hot swappable I
SDAIN
SCLIN
V
CC
UVLO
8
6
3
0.55V
0.45V
0.01 F
V
A
SDA
A
SCL
5 V
CC
CC
CC
CC
CC
C3*
/
10 k
CONNECT
CONNECT
R1
DELAY
95 s
100 k
100 k
SLEW RATE
SLEW RATE
DETECTOR
DETECTOR
RCH1
RCH2
0.01 F
C4*
10 k
R2
SDAIN
SCLIN
C2
0.01 F
2 mA
2 mA
BACKPLANE-TO-CARD
BACKPLANE-TO-CARD
V
2
CC
CONNECTION
CONNECTION
Figure 2. Typical application
C and SMBus buffer
PRECHARGE
PCA9512
Figure 3. Block diagram.
1 VOLT
GND
V
0.5 pF
CC2
* CAPACITORS NOT REQUIRED IF BUS IS SUFFICIENTLY LOADED
0.01 F
3
0.5 A
C1
SDAOUT
SCLOUT
CONNECT
ACC
2 mA
2 mA
20 pF
STOP BIT AND
10 k
BUS IDLE
SLEW RATE
SLEW RATE
DETECTOR
DETECTOR
R3
UVLO
CONNECT
100 k
RCH3
100 k
RCH4
CONNECT
10 k
R4
0.01 F
10 k
R5
RD
S
C5*
QB
0.01 F
C6*
CONNECT
CARD_V
4
CARD_SDA
CARD_SCL
CONNECT
GND
CC
PCA9512
7
2
Product data sheet
3 V
SW02069
1
5
SDAOUT
SCLOUT
0.55V
0.45V
V
ACC
SW02068
CC2
CC
CC
/