PCA9548ADBR

画像は参考用です

PCA9548ADBR

+BOM

IC INTERFACE SPECIALIZED 24SSOP

  • メーカーSTマイクロエレクトロニクス

  • メーカー品番 #PCA9548ADBR

  • パッケージ SSOP (DB)-24

  • 在庫状況1348

365 日間品質保証

7*24 日間の品質保証

90-時間単位のサービス保証

1日間のアフターサービス保証

仕様

属性
Package Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus Active
Applications Translating Switch
Interface I²C, SMBus
Voltage-Supply 2.3V ~ 5.5V
Package/Case 24-SSOP (0.209, 5.30mm Width)
SupplierDevicePackage 24-SSOP

概要

Description

The PCA9548ADBR is an integrated circuit manufactured by Texas Instruments, designed to help manage I²C bus systems. It functions as an 8-channel I²C switch or multiplexer, allowing multiple devices with the same I²C address to coexist on a single bus. The device operates by redirecting the I²C signals to one of eight downstream channels, effectively expanding the bus's capacity and addressing limitations.
The PCA9548ADBR supports standard and fast I²C bus speeds of up to 400 kHz, making it versatile for various applications. Controlled by an I²C master device, it uses a unique I²C slave address to select which downstream channel is active at any given time. This allows complex systems to manage multiple sensors, peripherals, or other I²C devices without address conflicts.
Housed in a compact SSOP (Shrink Small Outline Package), the PCA9548ADBR is ideal for applications in consumer electronics, industrial systems, and embedded computing where space-saving and efficient bus management are crucial. Its low power consumption and wide operating voltage range enhance its suitability for battery-powered and high-density circuit designs.

Equivalent

The PCA9548ADBR is an I2C bus switch with 8 channels. Equivalent products include the TCA9548A from Texas Instruments, the LTC4305 from Analog Devices, and the MAX7368 from Maxim Integrated. Always check the specifications and pin compatibility when considering substitutes to ensure they meet your specific requirements.

Features

The PCA9548ADBR is an I2C multiplexer from Texas Instruments. It features eight bidirectional translating switches that allow one I2C bus to connect to multiple devices with different addresses. Key features include:
1. I2C Interface: Compatible with I2C and SMBus standards, supporting 100 kHz and 400 kHz data transfer rates.
2. Eight Channels: Allows access to multiple I2C buses, each with its unique address for different device communication lines.
3. Voltage Range: Operates with a supply voltage from 2.3 V to 5.5 V, making it versatile for various applications.
4. Non-Volatile Registers: Channel selection is controlled via internal registers, retaining settings between accesses.
5. Low Power Consumption: Designed to minimize power usage, making it suitable for battery-operated devices.
6. ESD Protection: Built-in electrostatic discharge protection for robust operation.
7. Compact Package: Available in a small TSSOP package, optimizing board space in compact designs.
8. Crosspoint Switch Architecture: Provides flexibility and isolation between channels to prevent interference.
These features make the PCA9548ADBR ideal for expanding I2C bus capabilities in complex systems.

Pinout

The PCA9548ADBR is an I²C-bus switch with an 8-channel multiplexer. It is designed to allow multiple I²C devices with the same address to be connected to a single I²C bus, effectively expanding the addressability of the devices. The device has a pin count of 24 pins.
Key functions include:
- 8-channel I²C switch: The PCA9548ADBR can route the I²C signals to one of the eight downstream channels.
- I²C addressability: Multiple devices can be accessed through the same I²C bus by enabling only one channel at a time.
- Programmable control: Selection of the channels is controlled through the I²C-bus, using a programmable control register.
- Voltage translation: The device can be used to interface I²C-bus systems operating at different voltage levels.
These features make it suitable for applications where multiple identical I²C devices need to be connected to a single I²C bus master, allowing for flexible system design and scalability.

Manufacturer

The PCA9548ADBR is manufactured by Texas Instruments Incorporated (TI). Texas Instruments is a global semiconductor company that designs and produces a broad range of electronic components essential for various applications across industries. The company is well-known for its innovation and development in analog and embedded processing technologies, which are employed in numerous sectors, including automotive, industrial, personal electronics, and communications equipment. TI is recognized for its robust portfolio of products, including integrated circuits, processors, and sensors, aimed at enhancing the efficiency and functionality of electronic systems.

Application

The PCA9548ADBR is a 1-to-8 bidirectional translating I2C-bus switch, often used in applications requiring the expansion of I2C bus capacity. It is suitable for systems that need multiple I2C/SMBus devices with the same address, aiding in bus isolation and addressing conflicts. Common applications include complex sensor networks, multi-camera systems, data acquisition systems, and communications equipment. It is also used in test and measurement equipment and industrial control systems to manage multiple I2C devices efficiently. The device helps in reducing bus capacitance and in systems requiring segmented I2C buses for better signal integrity.

Package

The PCA9548ADBR is a TSSOP (Thin Shrink Small Outline Package) with 24 pins. It is commonly used for I2C bus multiplexing applications, allowing multiple I2C devices to communicate on the same bus without address conflicts.