PCA9546AD,112 NXP Semiconductors, PCA9546AD,112 Datasheet - Page 5

• Manufacturer Part Number: PCA9546AD,112
• Description: IC I2C SWITCH 4CH 16SOIC
• Manufacturer: NXP Semiconductors

Specifications of PCA9546AD,112

• Applications: 4-Channel I²C Switcher
• Interface: I²C, SMBus
• Voltage - Supply: 2.3 V ~ 5.5 V
• Package / Case: 16-SOIC (3.9mm Width)
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935275812112; PCA9546AD; PCA9546AD

NXP Semiconductors
6. Functional description
PCA9546A_5
Product data sheet
5.2 Pin description
6.1 Device address
Table 3.
[1]
Refer to
Following a START condition, the bus master must output the address of the slave it is
accessing. The address of the PCA9546A is shown in
internal pull-up resistors are incorporated on the hardware selectable address pins and
they must be pulled HIGH or LOW.
The last bit of the slave address defines the operation to be performed. When set to
logic 1 a read is selected, while a logic 0 selects a write operation.
Symbol
A0
A1
RESET
SD0
SC0
SD1
SC1
V
SD2
SC2
SD3
SC3
A2
SCL
SDA
V
Fig 5.
SS
DD
HVQFN16 package die supply ground is connected to both the V
V
and board-level performance, the exposed pad needs to be soldered to the board using a corresponding
thermal pad on the board, and for proper heat conduction through the board thermal vias need to be
incorporated in the PCB in the thermal pad region.
SS
pin must be connected to supply ground for proper device operation. For enhanced thermal, electrical,
Figure 1 “Block diagram of
Slave address
Pin description
Pin
SO16, TSSOP16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Rev. 05 — 2 July 2009
1
HVQFN16
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
[1]
1
fixed
PCA9546A”.
1
0
Description
address input 0
address input 1
active LOW reset input
serial data 0
serial clock 0
serial data 1
serial clock 1
supply ground
serial data 2
serial clock 2
serial data 3
serial clock 3
address input 2
serial clock line
serial data line
supply voltage
A2
selectable
hardware
A1
4-channel I
A0 R/W
002aab189
Figure
SS
pin and the exposed center pad. The
5. To conserve power, no
2
C-bus switch with reset
PCA9546A
© NXP B.V. 2009. All rights reserved.
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