PCA9510 Philips Semiconductors (Acquired by NXP), PCA9510 Datasheet - Page 5

• Manufacturer Part Number: PCA9510
• Description: Hot Swappable I2C And Smbus Bus Bufferhot Swappable i C And Smbus Buffers That Allows I/o Card Insertion Into a Live Backplane Without Corrupting The Data And Clock Buses. Control Circuitry Prevents The Backplane From Being Connected to The Card Unti
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
TYPICAL APPLICATION — PCA9511
BLOCK DIAGRAM — PCA9511
2003 Dec 18
Hot swappable I
SMBus bus buffer
ENABLE
SDAIN
SCLIN
UVLO
6
3
1
0.55V
0.45V
CC
SDAIN
SCLIN
CC
ENABLE
/
CONNECT
CONNECT
DELAY
130 µs
2
100 kΩ
100 kΩ
SLEW RATE
SLEW RATE
DETECTOR
DETECTOR
RCH1
RCH2
C and
(2.7 V to
5.5 V)
V
CC
10 kΩ
R1
Figure 4. Typical application — PCA9511
2 mA
2 mA
Figure 5. Block diagram — PCA9511
BACKPLANE-TO-CARD
CONNECT
BACKPLANE-TO-CARD
ENABLE
CONNECTION
CONNECTION
R2
10 kΩ
PRECHARGE
1
3
6
1 VOLT
ENABLE
8
0.5 pF
GND
5
4
C1
0.01 µF
0.5 µA
READY
2 mA
2 mA
STOP BIT AND
20 pF
10 kΩ
BUS IDLE
R5
2
7
5
SLEW RATE
SLEW RATE
DETECTOR
DETECTOR
UVLO
100 kΩ
RCH3
100 kΩ
RCH4
10 kΩ
CONNECT
CONNECT
R3
R4
10 kΩ
RD
S
QB
PCA9510; PCA9511
CONNECT
SCLOUT
SDAOUT
0.55V
0.45V
CONNECT
8
7
2
5
4
SW01051
CC
CC
V
SDAOUT
SCLOUT
READY
GND
/
CC
Product data
SW02151