pca9601 NXP Semiconductors, pca9601 Datasheet - Page 13

• Manufacturer Part Number: pca9601
• Description: Dual Bidirectional Bus Buffer
• Manufacturer: NXP Semiconductors

NXP Semiconductors
10. Application information
PCA9601_1
Product data sheet
Refer to application notes AN10658 and AN255 for more detailed application information.
Fig 12. Interfacing a standard 3 mA I
Fig 13. Galvanic isolation of I
Fig 14. 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
All information provided in this document is subject to legal disclaimers.
C-bus
SDA
I
PCA9601
2
12 V
C-bus
SDA
Rev. 01 — 28 May 2010
R1
2
C-bus communication
5 V
2
5 V
C-bus nodes via opto-couplers
PCA9601
12 V
PCA9601
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
PCA9601
002aae876
12 V
R5
002aae877
I
SDA
2
PCA9601
C-bus
© NXP B.V. 2010. All rights reserved.
3.3 V to 5 V
3.3 V to 5 V
002aae878
SDA
SCL
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