Bus Switch 1 x 8:1 24-VQFN (4x4)
TCA9548ARGER Engineering Specifications
General Description
The TCA9548ARGER is a low-voltage I²C and SMBus switch manufactured by Texas Instruments. It is designed to expand and manage I²C communication networks by allowing a single master device to selectively communicate with multiple downstream buses through independent switching channels.
The device functions as a bidirectional translating switch, enabling communication between devices operating at different voltage levels while maintaining protocol compatibility. Through software control, individual channels can be enabled or disabled, providing flexible bus segmentation, address conflict resolution, and system scalability.
The TCA9548ARGER is widely used in embedded systems, industrial control equipment, data acquisition platforms, telecommunications hardware, server management systems, sensor networks, and Internet of Things applications where multiple I²C devices must be connected to a single controller.
Its low-power CMOS architecture, integrated reset functionality, and hot-insertion support make it suitable for complex digital systems requiring reliable and efficient I²C bus management.
Engineering Specifications
Manufacturer: Texas Instruments
Manufacturer Part Number: TCA9548ARGER
Component Type: I²C bus switch and multiplexer
Technology: Low-voltage CMOS
Interface Standard: I²C and SMBus compatible
Switch Configuration: Multiple downstream I²C channel selection
Channel Operation: Software-controlled channel enable and disable
Communication Direction: Bidirectional signal transmission
Voltage Translation Capability: Supports communication between devices operating at different logic voltages
Bus Isolation Function: Independent channel isolation for address conflict management
Control Method: I²C command-based channel selection
Address Selection: Configurable device addressing through hardware address pins
Power Supply Configuration: Single-supply operation
Power Consumption: Low-power operation suitable for embedded applications
Signal Integrity Features: Low ON-state resistance and low propagation delay
Reset Function: Dedicated hardware reset input
Hot Insertion Support: Prevents bus disruption during device insertion and removal
Fail-Safe Characteristics: Protection against unintended bus communication during power transitions
Bus Capacitance Management: Improves communication reliability in large I²C networks
System Scalability: Supports expansion of sensor, peripheral, and control-device networks
Electrostatic Protection: Integrated ESD protection circuitry
Operating Temperature Range: Industrial temperature range
Package Type: VQFN surface-mount package
Mounting Style: Surface mount technology
Package Construction: Leadless thermally efficient package
Environmental Compliance: RoHS compliant and lead-free
Reliability Features: Designed for high-reliability industrial and embedded applications
Typical Applications
I²C bus expansion systems
Sensor aggregation networks
Industrial automation equipment
Embedded controller platforms
Server management systems
Data acquisition hardware
Telecommunications equipment
Internet of Things devices
Medical instrumentation
Consumer electronics
Robotics and automation systems
Environmental monitoring devices
Smart building control systems
Automotive electronic subsystems
Multi-sensor embedded applications
