仕様
| 属性 | 値 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | TCA |
| ProductStatus | Active |
| Type | Bus Switch |
| Circuit | 2 x 1:2 |
| IndependentCircuits | 1 |
| VoltageSupplySource | Single Supply |
| Voltage-Supply | 1.65V ~ 5.5V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 14-TSSOP (0.173, 4.40mm Width) |
概要
Description
The TCA9543APWR is an I2C bus switch with two bidirectional translating switches, designed by Texas Instruments. It allows a single I2C master device to communicate with multiple I2C slave devices, which may have the same addresses, by enabling different downstream channels. The device operates on a supply voltage range of 1.65 V to 5.5 V and supports standard and fast I2C bus speeds, up to 400 kHz.
Key features include two open-drain interrupt outputs for each downstream channel, which can alert the master device of events from the slave devices. The TCA9543APWR also includes a reset input to recover from bus faults. Address selection is configurable, providing flexibility in device addressing. This switch is ideal for applications requiring isolation or expansion of I2C/SMBus signals, such as in servers, telecommunications, and consumer electronics.
Its small TSSOP package allows for efficient use of PCB space, making it suitable for compact and space-constrained designs. The device enhances robustness and flexibility in complex I2C bus systems.
Key features include two open-drain interrupt outputs for each downstream channel, which can alert the master device of events from the slave devices. The TCA9543APWR also includes a reset input to recover from bus faults. Address selection is configurable, providing flexibility in device addressing. This switch is ideal for applications requiring isolation or expansion of I2C/SMBus signals, such as in servers, telecommunications, and consumer electronics.
Its small TSSOP package allows for efficient use of PCB space, making it suitable for compact and space-constrained designs. The device enhances robustness and flexibility in complex I2C bus systems.
Equivalent
The TCA9543APWR is a dual bidirectional I2C bus switch with interrupt logic. Equivalent products include the PCA9543A from NXP Semiconductors, the MAX7351 from Maxim Integrated, and the PI4MSD5V9543A from Diodes Incorporated. These alternatives provide similar functionality, including I2C multiplexing and interrupt handling, and can be suitable substitutes depending on specific design requirements and availability. Always check the datasheets for compatibility in terms of pin configuration, voltage levels, and additional features.
Features
The TCA9543APWR is a dual-channel I2C bus switch with interrupt logic, designed to resolve address conflicts in I2C/SMBus applications. Key features include:
1. Dual I2C Channels: Allows two downstream I2C buses to be controlled via a single upstream I2C bus, facilitating device isolation and address conflict resolution.
2. Interrupt Logic: Provides a mechanism for handling interrupts, ensuring efficient communication across multiple devices.
3. Voltage Range: Operates from 1.65V to 5.5V, offering compatibility with a wide range of system voltages.
4. Low Power Consumption: Includes a low standby current, making it suitable for battery-operated devices.
5. I2C/SMBus Compatibility: Supports standard I2C signaling, allowing seamless integration into existing I2C or SMBus systems.
6. Hot Swapping: Supports hot insertion, which enables adding or removing devices without powering down the system.
7. Small Package: Comes in a compact TSSOP package, suitable for space-constrained applications.
These features make the TCA9543APWR ideal for complex systems requiring multiple I2C devices with potential address conflicts.
1. Dual I2C Channels: Allows two downstream I2C buses to be controlled via a single upstream I2C bus, facilitating device isolation and address conflict resolution.
2. Interrupt Logic: Provides a mechanism for handling interrupts, ensuring efficient communication across multiple devices.
3. Voltage Range: Operates from 1.65V to 5.5V, offering compatibility with a wide range of system voltages.
4. Low Power Consumption: Includes a low standby current, making it suitable for battery-operated devices.
5. I2C/SMBus Compatibility: Supports standard I2C signaling, allowing seamless integration into existing I2C or SMBus systems.
6. Hot Swapping: Supports hot insertion, which enables adding or removing devices without powering down the system.
7. Small Package: Comes in a compact TSSOP package, suitable for space-constrained applications.
These features make the TCA9543APWR ideal for complex systems requiring multiple I2C devices with potential address conflicts.
Pinout
The TCA9543APWR is an I2C bus switch with two bidirectional translating switches, controlled via the I2C bus. It has a 16-pin TSSOP (PW) package. The key functions of the TCA9543A include allowing I2C bus expansion by enabling two downstream I2C buses to connect to a single upstream I2C bus. This device provides isolation between different I2C devices, which can help in reducing bus capacitance and preventing bus conflicts. The TCA9543A also features an interrupt input for each downstream channel, which can be used to alert the master device to events occurring on the slave devices connected to the downstream buses. Additionally, it supports both standard and fast I2C speeds and can operate with supply voltages ranging from 1.65 V to 5.5 V.
Manufacturer
The TCA9543APWR is manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components, including integrated circuits, microcontrollers, and sensors. The company is known for its innovations in analog and embedded processing technologies and serves various industries, such as automotive, industrial, consumer electronics, and communications. Texas Instruments is headquartered in Dallas, Texas, and has a significant presence in the semiconductor industry worldwide.
Application
The TCA9543APWR is a dual-channel I²C bus switch, commonly used in applications requiring multiple I²C bus segments or where isolation between bus segments is necessary. It is ideal for systems that need to manage multiple I²C devices with the same address, allowing them to be placed on separate buses to prevent address conflicts. Typical application areas include consumer electronics, industrial automation, server management, and embedded systems. It is also useful in applications like data communications equipment, test and measurement devices, and power management systems, where efficient and flexible I²C communication is crucial.
Package
The TCA9543APWR is packaged in a TSSOP-20 (Thin Shrink Small Outline Package) form. This package type is compact, with 20 pins, making it suitable for space-constrained applications.
