TCA9517
SCPS242 –DECEMBER 2012
www.ti.com
VCCA
VCCB
10 kW
10 kW
10 kW
10 kW
SDAA
SCLA
SDA
SCL
SDAB
SCLB
SDA
SCL
SLAVE
TCA9517
EN
BUS
MASTER
400 kHz
10 kW
10 kW
SDAA
SCLA
SDAB
SCLB
SDA
SCL
TCA9517
EN
SLAVE
400 kHz
10 kW
10 kW
SDAA
SCLA
SDAB
SCLB
SDA
SCL
SLAVE
400 kHz
TCA9517
EN
Figure 7. Typical Star Application
Multiple TCA9517 A sides can be connected in a star configuration, allowing all nodes to communicate with each
other.
VCCB
10 kW
10 kW
SDA
SCL
10 kW
10 kW
10 kW
10 kW
10 kW
10 kW
SDAB
SDAA SDAB
SDAA SDAB
SDAA
SDA
SCL
SCLB
SCLA
SCLA SCLB
SCLA SCLB
BUS
MASTER
TCA9517
EN
TCA9517
EN
TCA9517
EN
SLAVE
400 kHz
Figure 8. Typical Series Application
Multiple TCA9517s can be connected in series as long as the A side is connected to the B side. I2C bus slave
devices can be connected to any of the bus segments. The number of devices that can be connected in series is
limited by repeater delay/time-of-flight considerations on the maximum bus speed requirements.
10
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