pca9545ad NXP Semiconductors, pca9545ad Datasheet - Page 13

• Manufacturer Part Number: pca9545ad
• Description: 4-channel I2c Switch With Interrupt Logic And Reset
• Manufacturer: NXP Semiconductors

NXP Semiconductors
8. Application design-in information
PCA9545A_45B_45C_6
Product data sheet
Fig 16. Typical application
(1) If the device generating the interrupt has an open-drain output structure or can be 3-stated, a
I
2
C-bus/SMBus master
pull-up resistor is required.
If the device generating the interrupt has a totem-pole output structure and cannot be 3-stated,
a pull-up resistor is not required.
The interrupt inputs should not be left floating.
V
DD
= 2.7 V to 5.5 V
SDA
SCL
Rev. 06 — 19 March 2007
4-channel I
INT
SDA
SCL
RESET
A1
A0
V
SS
2
PCA9545A
V
C-bus switch with interrupt logic and reset
DD
= 3.3 V
PCA9545A/45B/45C
002aab171
INT0
INT1
INT2
INT3
SD0
SC0
SD1
SC1
SD2
SC2
SD3
SC3
see note
see note
see note
see note
© NXP B.V. 2007. All rights reserved.
V = 2.7 V to 5.5 V
V = 2.7 V to 5.5 V
V = 2.7 V to 5.5 V
V = 2.7 V to 5.5 V
(1)
(1)
(1)
(1)
channel 0
channel 1
channel 2
channel 3
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