pca9600 NXP Semiconductors, pca9600 Datasheet - Page 12

• Manufacturer Part Number: pca9600
• Description: Dual Bidirectional Bus Buffer
• Manufacturer: NXP Semiconductors

NXP Semiconductors
10. Application information
PCA9600_2
Product data sheet
Refer to PCA9600 data sheet and application notes AN10658 and AN255 for more
detailed application information.
Fig 11. Interfacing a standard 3 mA I
Fig 12. Galvanic isolation of I
Fig 13. Long distance I
SDA
SCL
3.3 V to 5 V
3.3 V to 5 V
higher voltage or higher current sink (e.g. Fast-mode Plus) devices
This simple example may be limited, if using lowest-cost couplers, to speeds as low as 5 kHz.
Refer to application notes for schematics suitable for operation to 400 kHz or higher.
main enclosure
I
2
C-bus
SDA
I
PCA9600
2
12 V
C-bus
SDA
Rev. 02 — 13 August 2008
R1
2
C-bus communication
5 V
5 V
2
C-bus nodes via opto-couplers
PCA9600
12 V
PCA9600
2
C-bus or one with TTL levels (e.g. SMBus) to
long cables
RX
(SDA)
TX
(SDA)
R2
TX
(SDA)
RX
(SDA)
R3
V
CC
V
CC
(2.5 V to 15 V)
R1
'SDA' (new levels)
R4
V
Dual bidirectional bus buffer
CC1
remote control enclosure
PCA9600
001aai063
12 V
R5
001aai064
I
SDA
2
PCA9600
C-bus
© NXP B.V. 2008. All rights reserved.
3.3 V to 5 V
3.3 V to 5 V
002aac846
SDA
SCL
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