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NCA9548A Datasheet 8-channel I2c-bus Switch

Manufacturer: Nexperia

Overview: NCA9548A 8-channel I²C-bus switch with reset Rev. 1 — 20 August 2025 Product data sheet 1.

General Description

The NCA9548A is an octal bidirectional translating switch controlled via the I²C-bus.

The SCL/SDA upstream pair fans out to eight downstream pairs, or channels.

Any individual SCn/SDn channel or bination of channels can be selected, determined by the contents of the programmable control register.

Key Features

  • 1-of-8 bidirectional translating switches.
  • I²C-bus interface logic; compatible with SMBus standards.
  • Active LOW reset input.
  • Three address pins allowing up to eight devices on the I²C-bus.
  • Channel selection via I²C-bus, in any combination.
  • Power-up with all switch channels deselected.
  • Low Ron switches.
  • Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses.
  • No glitch on power-up.
  • Suppor.

More Datasheets from Nexperia

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NCA9539-Q100 Low-voltage 16-bit I2C and SMBus low-power I/O expander
NCA9555 Low-voltage 16-bit I2C and SMBus I/O expander
NCA9555-Q100 Low-voltage 16-bit I2C and SMBus I/O expander
NCA9595 Low-voltage 16-bit I2C and SMBus I/O expander

NCA9548A Distributor