PCA9546A

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

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4-Kanal, 2,3- bis 5,5-V-I2C/SMBus-Schalter mit Reset und Spannungsumsetzung

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Datenblatt

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

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Drop-In-Ersatz mit gegenüber dem verglichenen Baustein verbesserter Funktionalität

TCA9546A

AKTIV

4-Kanal, 1,65- bis 5,5-V-I2C/SMBus-Schalter mit Reset und Spannungsumsetzung Performance enhancements for power-on reset and lower voltage operation.

PCA9546A

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

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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Alle anzeigen 11

	Typ	Titel		Datum
*	Data sheet	PCA9546A Low Voltage 4-Channel I2C and SMBus Switch with Reset Function datasheet (Rev. I)	PDF \| HTML	21 Jun 2022
	Application note	I2C Solutions for Hot Swap Applications (Rev. A)		31 Jan 2023
	Application note	I2C Dynamic Addressing		25 Apr 2019
	Selection guide	Logic Guide (Rev. AB)		12 Jun 2017
	Application note	Choosing the Correct I2C Device for New Designs	PDF \| HTML	07 Sep 2016
	Application note	Understanding and Interpreting Standard-Logic Data Sheets (Rev. C)		02 Dez 2015
	Application note	Understanding the I2C Bus	PDF \| HTML	30 Jun 2015
	Application note	Maximum Clock Frequency of I2C Bus Using Repeaters		15 Mai 2015
	Application note	I2C Bus Pull-Up Resistor Calculation	PDF \| HTML	13 Feb 2015
	Application note	Programming Fun Lights With TI's TCA6507		30 Nov 2007
	Application note	Semiconductor Packing Material Electrostatic Discharge (ESD) Protection		08 Jul 2004

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Gehäuse	Pins	CAD-Symbole, Footprints und 3D-Modelle
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

4-Kanal, 2,3- bis 5,5-V-I2C/SMBus-Schalter mit Reset und Spannungsumsetzung

Eine neuere Version dieses Produkts ist verfügbar

Drop-In-Ersatz mit gegenüber dem verglichenen Baustein verbesserter Funktionalität

PCA9546A

Produktdetails

Technische Dokumentation

Design und Entwicklung

HSPICE Model for PCA9546A

PCA9546A IBIS Model

I2C-DESIGNER — I2C Designer Tool

PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool

TINA-TI — SPICE-basiertes analoges Simulationsprogramm

TIDA-010240 — Referenzdesign für skalierbares, intelligentes Multi-Pack-Batterieladegerät

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