參數(shù)資料
型號(hào)： PCA9546A
廠商： NXP Semiconductors N.V.
英文描述： 4-channel I2C switch with reset
中文描述： 4通道的I2C開關(guān)與復(fù)位
文件頁(yè)數(shù)： 5/25頁(yè)
文件大?。?/td> 144K
代理商： PCA9546A
9397 750 14318
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 6 April 2005
5 of 25
Philips Semiconductors
PCA9546A
4-channel I
2
C switch with reset
6.2 Pin description
[1]
HVQFN package die supply ground is connected to both the V
SS
pin and the exposed center pad. The V
SS
pin must be connected to supply ground for proper device operation. For enhanced thermal, electrical, 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.
7.
Functional description
Refer to
Figure 1 “Block diagram of PCA9546A” on page 3
.
7.1 Device address
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
Figure 5
. To conserve power, no
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.
Table 3:
Symbol
Pin description
Pin
SO, TSSOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Description
HVQFN
15
16
1
2
3
4
5
6
[1]
7
8
9
10
11
12
13
14
A0
A1
RESET
SD0
SC0
SD1
SC1
V
SS
SD2
SC2
SD3
SC3
A2
SCL
SDA
V
DD
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
Fig 5.
Slave address
002aab189
1
1
1
0
A2
A1
A0 R/W
fixed
hardware
selectable
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9546A_1 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL I2C AND SMBus SWITCH WITH RESET FUNCTION
PCA9546A_2 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL I2C AND SMBus SWITCH WITH RESET FUNCTION
PCA9546A_3 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL I2C AND SMBus SWITCH WITH RESET FUNCTION
PCA9546ABS 制造商:NXP Semiconductors 功能描述:
PCA9546ABS,118 功能描述:多路器開關(guān) IC I2C SWITCH 4CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
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