TCA9544A

Name: TCA9544A
Brand: TI
SKU: TCA9544A
Price: 0.375 USD

現行

具中斷和電壓轉換的 4 通道 1.65- 至 5.5V I2C/SMBus 多工器

立即訂購

產品規格表

document-pdfAcrobat TCA9544A Low Voltage 4-Channel I2C and SMBus Multiplexer With Interrupt Logic datasheet (Rev. C) (英文) PDF | HTML

TCA9544A

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)

1.65

Features

Interrupt 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)

1.65

Features

Interrupt pin

Rating

Catalog

Frequency (max) (MHz)

0.4

Operating temperature range (°C)

-40 to 85

Number of channels

4

TSSOP (PW)

20

41.6 mm² 6.5 x 6.4

1-of-4 Bidirectional Translating Switches
I²C Bus and SMBus Compatible
Four Active-Low Interrupt Inputs
Active-Low Interrupt Output
Three Address Pins, Allowing up to Eight TCA9544A Devices on the I²C Bus
Channel Selection Via I²C Bus
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 1.65 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
- 4000-V Human-Body Model (A114-A)
- 1500-V Charged-Device Model (C101)

1-of-4 Bidirectional Translating Switches
I²C Bus and SMBus Compatible
Four Active-Low Interrupt Inputs
Active-Low Interrupt Output
Three Address Pins, Allowing up to Eight TCA9544A Devices on the I²C Bus
Channel Selection Via I²C Bus
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 1.65 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
- 4000-V Human-Body Model (A114-A)
- 1500-V Charged-Device Model (C101)

The TCA9544A is a 4-channel, bidirectional translating I2C Muliplexer. The master SCL/SDA signal pair is directed to one of the four channels of slave devices, SC0/SD0-SC3/SD3. Four interrupt inputs (INT3–INT0), one for each of the downstream pairs, are provided. One interrupt output (INT) acts as an AND of the four interrupt inputs.

A power-on reset function returns the registers to their default state and initializes the I²C state machine, with all channels deselected.

The pass gates of the switches are constructed such that the VCC pin can be used to limit the maximum high voltage which will be passed by the TCA9544A. 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 TCA9544A is a 4-channel, bidirectional translating I2C Muliplexer. The master SCL/SDA signal pair is directed to one of the four channels of slave devices, SC0/SD0-SC3/SD3. Four interrupt inputs (INT3–INT0), one for each of the downstream pairs, are provided. One interrupt output (INT) acts as an AND of the four interrupt inputs.

A power-on reset function returns the registers to their default state and initializes the I²C state machine, with all channels deselected.

The pass gates of the switches are constructed such that the VCC pin can be used to limit the maximum high voltage which will be passed by the TCA9544A. 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	TCA9544A Low Voltage 4-Channel I2C and SMBus Multiplexer With Interrupt Logic datasheet (Rev. C)	PDF \| HTML	2019年 10月 29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
	Application note	Choosing the Correct I2C Device for New Designs	PDF \| HTML	2016年 9月 7日
	Selection guide	I2C Infographic Flyer		2015年 12月 3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

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TCA9544A IBIS Model

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TCA9544A

具中斷和電壓轉換的 4 通道 1.65- 至 5.5V I2C/SMBus 多工器

TCA9544A

產品詳細資料

技術文件

設計與開發

TCA9548AEVM — TCA9548A I2C 1 對 8 雙向轉換開關評估模組

TCA9544A IBIS Model

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