Fully Configurable 8-Bit I2C-Controlled GPIO Expander

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Overview

The FXL6408 is an 8-bit I2C-controlled GPIO expander. When configured in Input Mode, the FXL6408 monitors the input ports for data transitions and signals the baseband by asserting the /INT pin. The input default values can be programmed independently, allowing customized input detection. All inputs can be configured with pull-up or pull-down resistors to pre-bias the inputs in open-drain or non-driven applications. When configured in Output Mode, the GPIO pins are capable of delivering 6 mA output drive according to the I2C register set. The FXL6408 is designed to allow voltage translation from levels as low as 1.65 V and up to 4.0 V. The FXL6408 features an active LOW RESET input as well as Power-On Reset (POR) circuit and I2C software reset options.

  • This product is general usage and suitable for many different applications.
  • 4X Expansion of Connected Processor I/O Ports
  • Fully Integrated I2C Slave
  • 8 Independently Configurable I/O Ports
  • Low-Power Quiescent Current: 1.5 µA
  • Voltage Translation Capable from 1.65 V I2C Port Up to 4.0 V GPIO Pins
  • Selectable Device Address
  • 6 mA Output Drive
  • Interrupt Pin to Alert Processor of Status Changes

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ECAD Models

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MSL Type

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I/O

Cascadable

VCC Min (V)

VCC Max (V)

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LED Blink/PWM

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FXL6408UMX

Active

Pb

A

H

P

UQFN-16

1

260

REEL

5000

Y

8

8 Slave ID Addresses

1.65

4

Yes

No

No

6

$0.5647

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