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PCA9546AD

Name: PCA9546AD
Rating: 4.7 (12 reviews)

IC INTERFACE SPECIALIZED 16SOIC

Производитель
Мфр. Часть #PCA9546AD
Пакет
Лист данных PCA9546AD DataSheet
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Спецификации

Part Status	Obsolete
Applications	Translating Switch
Interface	I2C, SMBus
Voltage - Supply	2.3V ~ 5.5V
Package / Case	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package	16-SOIC
Mounting Type	Surface Mount
Base Product Number	PCA9546

Обзор

Description

The PCA9546AD is a versatile I²C bus multiplexer designed by NXP Semiconductors. It allows for the connection of multiple I²C devices with the same address to a single bus controller by providing up to four downstream I²C channels. This device enables the selection of one active channel at a time, reducing address conflicts and allowing for greater system flexibility.
Key features of the PCA9546AD include:
- It supports I²C standard speed (up to 400 kHz) and fast mode (up to 1 MHz).
- It has an integrated power-on reset function.
- The device can operate within a wide voltage range (2.3V to 5.5V).
- It facilitates easy integration with microcontrollers and other devices that communicate via I²C.
Applications include sensor management in embedded systems, addressing multiple identical sensors, and enhancing system scalability in various electronic devices.

Features

The PCA9546AD is a low-voltage I2C multiplexer designed for connecting multiple I2C bus devices to a single master device. Key features include:
1. Channels: It has 6 channels, allowing selection of up to 6 different I2C buses.
2. Voltage Range: Operates from 2.3V to 5.5V, making it suitable for various applications.
3. I2C Compatible: Fully supports I2C standard, with a 7-bit addressing scheme.
4. Fast Mode Support: Supports standard (100 kHz) and fast (400 kHz) mode I2C communication.
5. Built-in Reset: Offers a built-in reset function to ensure proper initialization.
6. Low Power Consumption: Consumes low quiescent current, making it ideal for battery-operated devices.
7. Active High Control: Each channel can be activated independently via I2C commands.
8. Multiple Masters: Can be used in systems with multiple I2C masters.
These features make the PCA9546AD suitable for applications needing multiple I2C devices while minimizing system complexity.

Package

The PCA9546AD is available in a 16-pin TSSOP (Thin Shrink Small Outline Package) and a 16-pin SOIC (Small Outline Integrated Circuit) package type.

Pinout

The PCA9546AD is an I2C multiplexer with a pin count of 16. It allows communication with multiple I2C devices on a single bus by selecting one of up to four downstream I2C buses.
Pin Functions:
1. VCC (Pin 1) - Power supply (2.3V to 5.5V).
2. GND (Pin 8) - Ground.
3. SDA (Pin 2) - Serial data line (I2C).
4. SCL (Pin 3) - Serial clock line (I2C).
5. A0, A1, A2 (Pins 4, 5, 6) - Address select pins for I2C address configuration.
6. RESET (Pin 7) - Reset pin; active low.
7. EN (Pin 9) - Enable pin; active high to enable the device.
8. SDA0-SDA3 (Pins 10-13) - Downstream I2C data lines for buses.
9. SCL0-SCL3 (Pins 14-16) - Downstream I2C clock lines for buses.
The device effectively expands the I2C bus capability while allowing for selective communication with multiple devices.

Manufacturer

The PCA9546AD is manufactured by NXP Semiconductors. NXP is a global semiconductor company that specializes in high-performance mixed-signal and standard product solutions. The company focuses on automotive, industrial, and Internet of Things (IoT) applications, providing a wide range of products, including microcontrollers, processors, and connectivity solutions. NXP has a strong emphasis on innovation and is known for its commitment to developing advanced technologies for smart devices and systems.

Application

The PCA9546AD is an I2C multiplexer that allows multiple I2C devices to communicate on a single bus. Application areas include:
1. Sensor Management: Connecting multiple sensors to a microcontroller.
2. LCD Displays: Managing multiple display interfaces.
3. Data Acquisition Systems: Integrating various measurement devices.
4. Embedded Systems: Expanding I2C capability in compact designs.
5. Communication Interfaces: Enabling multiple I2C slave devices in complex systems.
Its versatility supports a wide range of electronic applications.

Equivalent

Equivalent products to the PCA9546AD chip include the TCA9546A, PCA9546A, and TCA9548A. These chips are I2C multiplexer solutions that facilitate communication between multiple I2C bus devices while preventing signal conflicts. Always verify specifications and pin compatibility when considering replacements.

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