pca9518d NXP Semiconductors, pca9518d Datasheet - Page 3

• Manufacturer Part Number: pca9518d
• Description: Expandable 5-channel I2c Hub
• Manufacturer: NXP Semiconductors

Philips Semiconductors
A more detailed view of Figure 2 buffer is shown in Figure 3.
2004 Sep 29
EXPSDA1
EXPSDA2
EXPSCL1
EXPSCL2
SCL0
SCL1
SCL2
SDA0
SDA1
SDA2
Expandable 5-channel I
EN1
EN2
Enable
Data
PCA9518
Figure 3. Buffer detail
z
Buffer
Buffer
Buffer
Buffer
Buffer
Buffer
2
C hub
Inc
To output
In
Figure 2. Block Diagram: PCA9518
SW00712
Logic
Logic
Hub
Hub
GND
V
CC
3
The output pull-down voltage of each internal buffer is set for
approximately 0.5 V, while the input threshold of each internal buffer
is set about 0.07 V lower, when the output is internally driven LOW.
This prevents a lock-up condition from occurring.
Buffer
Buffer
Buffer
Buffer
PCA9518
Product data sheet
SU01596
SDA4
SDA3
SCL3
SCL4
EN4
EN3