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TCA9545APWR

Name: TCA9545APWR
Rating: 4.7 (12 reviews)

IC BUS SWITCH 2 X 1:4 20TSSOP

Производитель
Мфр. Часть #TCA9545APWR
Пакет TSSOP-20
Лист данных
В наличии6459

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Спецификации

Package	Tape & Reel (TR),Cut Tape (CT)
Series	TCA
ProductStatus	Active
Type	Bus Switch
Circuit	2 x 1:4
IndependentCircuits	1
VoltageSupplySource	Single Supply
Voltage-Supply	1.65V ~ 5.5V
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
Package/Case	20-TSSOP (0.173, 4.40mm Width)

Обзор

Description

The TCA9545APWR is a high-speed I2C multiplexer that allows multiple I2C devices to share a single I2C bus without interference. It features three selectable channels, enabling the connection of up to eight different I2C devices to a single master controller. The device operates with a supply voltage range of 1.8V to 5.5V, making it compatible with various logic levels.
Key features include:
- Channel Selection: Up to eight downstream I2C buses can be connected, with two address pins allowing for multiple TCA9545 devices on the same bus.
- Low Power Consumption: Its design ensures minimal power usage, which is critical for battery-operated devices.
- High-Speed Operation: Supports fast-mode (up to 400 kHz) I2C communication, enhancing performance in data-intensive applications.
- Integrated Logic: The device does not require external components for basic operation, simplifying design.
The TCA9545APWR is widely used in applications such as sensor arrays, displays, and embedded systems where multiple I2C devices are present.

Features

The TCA9545APWR is a 1-to-8 I²C bus multiplexer designed to expand the capabilities of the I²C bus by allowing multiple devices to communicate on the same bus without interference. Key features include:
1. Multiplexing: Supports up to 8 downstream I²C devices, enabling multiple I²C buses.
2. Addressing: Configurable via two address selection pins, allowing multiple TCA9545 devices on the same bus.
3. Bus Isolation: Each channel can be independently enabled or disabled, ensuring that inactive devices do not interfere with active ones.
4. High Speed: Supports standard I²C speeds up to 400 kHz.
5. Low Power Consumption: Operates at low power levels, making it suitable for battery-powered applications.
6. Voltage Range: Compatible with a supply voltage range of 1.65V to 5.5V.
7. Tiny Package: Available in a 24-pin TSSOP package, saving board space.
The TCA9545APWR is ideal for applications requiring multiple I²C devices, such as sensor networks and communication systems.

Package

The TCA9545APWR is packaged in a 16-pin TSSOP (Thin Shrink Small Outline Package). This surface-mount package is designed for efficient space utilization on PCBs.

Pinout

The TCA9545APWR is a 12-channel I²C multiplexer. It has a total of 16 pins. Here are its key pin functions:
1. VCC (Pin 1): Power supply input (typically 1.8V to 5.5V).
2. GND (Pin 8): Ground.
3. SCL (Pin 2): I²C Clock Input.
4. SDA (Pin 3): I²C Data Input/Output.
5. RESET (Pin 4): Active-low reset input; resets the multiplexer when pulled low.
6. A0, A1, A2 (Pins 5, 6, 7): Address select pins for I²C slave addressing.
7. Channel Output Pins (Pins 9 to 16): Y0 to Y11 (Y0-Y3 for channels 0-3, Y4-Y7 for channels 4-7, Y8-Y11 for channels 8-11), these are the outputs that connect to the selected I²C devices.
The device allows for the connection of multiple I²C devices on a single bus, enabling communication with specific channels as needed.

Manufacturer

The TCA9545APWR is manufactured by Texas Instruments (TI), a leading global semiconductor company. Texas Instruments designs and manufactures a wide range of electronic components, including analog and embedded processing chips, which are used in various applications such as automotive, industrial, consumer electronics, and communications. Founded in 1930, TI is known for its innovation in the technology sector and plays a significant role in the development of integrated circuits and microcontrollers. The company focuses on providing solutions that enhance performance and efficiency in electronic devices, catering to a diverse customer base worldwide.

Application

The TCA9545APWR is a I2C multiplexer used in applications requiring multiple I2C buses, allowing communication between a single master and multiple slave devices without address conflicts. Common application areas include sensor networks, display interfaces, and expansion of I2C peripherals in embedded systems, robotics, and industrial automation. It enables efficient management of multiple devices while maintaining signal integrity and system scalability.

Equivalent

Equivalent products to the TCA9545APWR include the TCA9548A, PCA9548A, and TCA9546APWR. These chips are I2C multiplexer devices, enabling multiple slave devices to share a single I2C bus. Be sure to check specific features and compatibility for your application requirements.

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