Datasheet

PCA9512A_PCA9512B All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6 — 1 March 2013 13 of 27
NXP Semiconductors
PCA9512A; PCA9512B
Level shifting hot swappable I
2
C-bus and SMBus bus buffer
8.11 Additional system compromises
• Additional parts
• Additional assembly cost
• Reduced system reliability due to complexity
• Reduced logic level noise margin (immunity)
• Sensitivity to ground offsets between sub-systems (cable links, for example)
• Increased loading on the low voltage side (must carry the high voltage side
sink current)
• ESD robustness
9. Application design-in information
Fig 10. Typical application
002aab794
ACC
GND
R5
10 kΩ
R3
10 kΩ
R4
10 kΩ
SDAOUT
SCLOUT
C2
0.01 μF
R1
10 kΩ
R2
10 kΩ
V
CC
(5 V)
SDAIN
SCLIN
PCA9512A
SDA
SCL
V
CC
V
CC2
C1
0.01 μF
CARD_V
CC
(3 V)
CARD_SDA
CARD_SCL