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PCA9548APW Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
PCA9548APWTI7000Yes

PCA9548APW** is an 8-channel I²C-bus multiplexer manufactured by **Texas Instruments (TI)**.

The PCA9548APW is an 8-channel I²C-bus multiplexer manufactured by Texas Instruments (TI).

Key Specifications:

  • Number of Channels: 8
  • Supply Voltage Range: 2.3V to 5.5V
  • I²C Bus Frequency Support: Up to 400 kHz
  • Low On-Resistance: 5Ω (typical)
  • Interrupt Inputs: 8 (one per channel)
  • Package Type: TSSOP-24
  • Operating Temperature Range: -40°C to +85°C

Descriptions:

The PCA9548APW allows multiple I²C devices with the same address to be connected on separate buses, enabling communication through a single master. It features an I²C-controlled switching mechanism to select one of the 8 downstream channels.

Features:

  • I²C-Bus Controlled Multiplexer: Enables master selection of any channel.
  • Channel Selection via I²C: No additional GPIOs required.
  • Power-Up with All Channels Disabled: Prevents bus contention.
  • Supports Hot Insertion: Allows safe connection of live systems.
  • Low Standby Current: Reduces power consumption.
  • ESD Protection: Exceeds 2000V HBM per JESD22-A114.

This device is commonly used in applications requiring multiple I²C slave devices with identical addresses, such as sensor arrays, memory expansion, and multi-board systems.

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