Description

TCA9548A-Q1

Description

The TCA9548A-Q1 is a quad-channel, ultra-low power, I2C switch with an active-low reset input. The device features four downstream I2C ports, allowing a single upstream I2C port to be switched to one of four downstream I2C ports.

Features

• Quad-channel I2C switch for fan-out and fan-in applications
• Ultra-low power consumption: 0.85 μA (typical) per channel
• 1-channel upstream port and 4-channel downstream ports
• Channel selection via I2C serial interface
• Active-low reset input (RESET)
• Operating Power-SupplyVoltage: 1.65V to 5.5V
• High-impedance I2C pins when powered down
• Open-drain interrupt (INT) pin for fault detection
• ESD protection exceeds 2000 V (HBM)
• Latch-up performance exceeds 100 mA per JESD 78, Class II

Parameters

Electrical Characteristics

• Operating Power-Supply Voltage: 1.65V to 5.5V
• Low Level Input Voltage: 0.3 x VCC (max), 0.8V (max)
• High Level Input Voltage: 0.7 x VCC (min), 2.4V (min)
• Low Level Output Voltage: 0.4V (max)
• High Level Output Voltage: 0.7 x VCC (min), 2.4V (min)
• Input Current: ±1 μA
• Off-State Output Current: ±1 μA
• Quiescent Current: 3.4 μA (typical)

Package and Thermal Information

• Package Type: WQFN (16 pins), X2QFN (16 pins)
• Thermal Impedance (junction-to-ambient): 54.2°C/W
• Operating Temperature Range: -40°C to +125°C
• Storage Temperature Range: -65°C to +150°C

I2C Interface

• I2C Clock Frequency: 400 kHz (max)
• I2C Bus Timeout: 25 ms (typical)

Switching Characteristics

• Channel Switching Time: 1 μs (typical)
• RESETAsserted Time: 1.5 μs (typical)

Reliability and Quality

• MTBF: 10,183,557 h (typical)
• ESD Protection: 2000 V (HBM)

Channel Select, Interrupt, and Reset Timing

• tCH: 10 ns (min), 1000 ns (max)
• tIR: 10 ns (min), 2200 ns (max)
• tR: 10 ns (min), 1000 ns (max)

Ordering Information

• Package: WQFN (16 pins), X2QFN (16 pins)
• Temperature Range: -40°C to +125°C

Applications

The TCA9548A-Q1 can be used in various applications, including:

• I2C buses with multiple devices
• Sensor networks
• Industrial control systems
• Medical devices
• Automotive systems

Documentation and Resources

For more information, refer to the TCA9548A-Q1 datasheet and other related documentation.

Contact Us

For any questions or inquiries, please contact us.