PCA9546A

Name: PCA9546A
Brand: TI
SKU: PCA9546A
Price: 0.575 USD

現行

具重設和電壓轉換的 4 通道 2.3 至 5.5-V I2C/SMBus 開關

立即訂購

產品規格表

document-pdfAcrobat PCA9546A Low Voltage 4-Channel I2C and SMBus Switch with Reset Function datasheet (Rev. I) (英文) PDF | HTML

現在提供此產品的更新版本

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TCA9546A

現行

具重設和電壓轉換的 4 通道 1.65 至 5.5-V I2C/SMBus 開關 Performance enhancements for power-on reset and lower voltage operation.

PCA9546A

現行

產品規格表

立即訂購

產品詳細資料

Addresses

8

Supply voltage (max) (V)

5.5

Supply voltage (min) (V)

2.3

Features

Reset pin

Rating

Catalog

Frequency (max) (MHz)

0.4

Operating temperature range (°C)

-40 to 85

Number of channels

4

Addresses

8

Supply voltage (max) (V)

5.5

Supply voltage (min) (V)

2.3

Features

Reset pin

Rating

Catalog

Frequency (max) (MHz)

0.4

Operating temperature range (°C)

-40 to 85

Number of channels

4

SOIC (D)

16

59.4 mm² 9.9 x 6

SOIC (DW)

16

106.09 mm² 10.3 x 10.3

TSSOP (PW)

16

32 mm² 5 x 6.4

TVSOP (DGV)

16

23.04 mm² 3.6 x 6.4

VQFN (RGV)

16

16 mm² 4 x 4

VQFN (RGY)

16

14 mm² 4 x 3.5

1-of-4 Bidirectional Translating Switches
I²C Bus and SMBus Compatible
Active-Low Reset Input
Three Address Pins, Allowing up to Eight PCA9546A Devices on the I²C Bus
Channel Selection Via I²C Bus, in Any Combination
Power-up With All Switch Channels Deselected
Low R_ON Switches
Allows Voltage-Level Translation Between 1.8-V, 2.5-V, 3.3-V, and 5-V Buses
No Glitch on Power-up
Supports Hot Insertion
Low Standby Current
Operating Power-Supply Voltage Range of 2.3 V to 5.5 V
5.5 V Tolerant Inputs
0 to 400-kHz Clock Frequency
Latch-Up Performance Exceeds 100 mA Per JESD 78
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)

1-of-4 Bidirectional Translating Switches
I²C Bus and SMBus Compatible
Active-Low Reset Input
Three Address Pins, Allowing up to Eight PCA9546A Devices on the I²C Bus
Channel Selection Via I²C Bus, in Any Combination
Power-up With All Switch Channels Deselected
Low R_ON Switches
Allows Voltage-Level Translation Between 1.8-V, 2.5-V, 3.3-V, and 5-V Buses
No Glitch on Power-up
Supports Hot Insertion
Low Standby Current
Operating Power-Supply Voltage Range of 2.3 V to 5.5 V
5.5 V Tolerant Inputs
0 to 400-kHz Clock Frequency
Latch-Up Performance Exceeds 100 mA Per JESD 78
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)

The PCA9546A is a quad bidirectional translating switch controlled via the I²C bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can be selected, determined by the contents of the programmable control register.

An active-low reset ( RESET) input allows the PCA9546A to recover from a situation in which one of the downstream I²C buses is stuck in a low state. Pulling RESET low resets the I²C state machine and causes all the channels to be deselected, as does the internal power-on reset function.

The pass gates of the switches are constructed such that the V_CC pin can be used to limit the maximum high voltage, which will be passed by the PCA9546A. This allows the use of different bus voltages on each pair, so that 1.8-V, 2.5-V, or 3.3-V parts can communicate with 5-V parts without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 5.5-V tolerant.

The PCA9546A is a quad bidirectional translating switch controlled via the I²C bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can be selected, determined by the contents of the programmable control register.

An active-low reset ( RESET) input allows the PCA9546A to recover from a situation in which one of the downstream I²C buses is stuck in a low state. Pulling RESET low resets the I²C state machine and causes all the channels to be deselected, as does the internal power-on reset function.

The pass gates of the switches are constructed such that the V_CC pin can be used to limit the maximum high voltage, which will be passed by the PCA9546A. This allows the use of different bus voltages on each pair, so that 1.8-V, 2.5-V, or 3.3-V parts can communicate with 5-V parts without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 5.5-V tolerant.

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	類型	標題		日期
*	Data sheet	PCA9546A Low Voltage 4-Channel I2C and SMBus Switch with Reset Function datasheet (Rev. I)	PDF \| HTML	2022年 6月 21日
	Application note	I2C Solutions for Hot Swap Applications (Rev. A)		2023年 1月 31日
	Application note	I2C Dynamic Addressing		2019年 4月 25日
	Selection guide	Logic Guide (Rev. AB)		2017年 6月 12日
	Application note	Choosing the Correct I2C Device for New Designs	PDF \| HTML	2016年 9月 7日
	Application note	Understanding and Interpreting Standard-Logic Data Sheets (Rev. C)		2015年 12月 2日
	Application note	Understanding the I2C Bus	PDF \| HTML	2015年 6月 30日
	Application note	Maximum Clock Frequency of I2C Bus Using Repeaters		2015年 5月 15日
	Application note	I2C Bus Pull-Up Resistor Calculation	PDF \| HTML	2015年 2月 13日
	Application note	Programming Fun Lights With TI's TCA6507		2007年 11月 30日
	Application note	Semiconductor Packing Material Electrostatic Discharge (ESD) Protection		2004年 7月 8日

設計與開發

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模擬型號

HSPICE Model for PCA9546A

SCPJ001.ZIP (112 KB) - HSpice Model

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模擬型號

PCA9546A IBIS Model

SCPM006.ZIP (129 KB) - IBIS Model

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設計工具

I2C-DESIGNER — I2C 設計工具

Use the I2C Designer tool to quickly resolve conflicts in addressing, voltage level and frequency in I2C based designs. Enter master and slave inputs to automatically generate an I2C tree or easily build a custom solution. This tool will help designers save time and comply with the I2C standard (...)

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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)

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TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)

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參考設計

TIDA-010240 — 可擴充多組智慧型電池充電器參考設計

隨身行李通常不允許放置超過 100 瓦時數 (Wh) 的鋰電池，而此規定的任何例外情況均由航空公司自行裁定，並需事先獲得核准。此參考設計是一種智慧型高效率充電器設計，適用於高達 100 Wh 的雙智慧電池組，以平行配置的 1S–5S 鋰離子 (Li-ion) 電池形式實作。

Design guide: PDF

封裝	針腳	CAD 符號、佔位空間與 3D 模型
SOIC (D)	16	Ultra Librarian
SOIC (DW)	16	Ultra Librarian
TSSOP (PW)	16	Ultra Librarian
TVSOP (DGV)	16	Ultra Librarian
VQFN (RGV)	16	Ultra Librarian
VQFN (RGY)	16	Ultra Librarian

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PCA9546A

具重設和電壓轉換的 4 通道 2.3 至 5.5-V I2C/SMBus 開關

現在提供此產品的更新版本

可直接投入的替代產品，相較於所比較的裝置，具備升級功能

PCA9546A

產品詳細資料

技術文件

設計與開發

HSPICE Model for PCA9546A

PCA9546A IBIS Model

I2C-DESIGNER — I2C 設計工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

TIDA-010240 — 可擴充多組智慧型電池充電器參考設計

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