Description

KTS1625 is a 16-bit general-purpose I/O expander via the I2C bus for microcontrollers when additional I/Os are needed while keeping interconnections to the
minimum.

KTS1625 supports power rail ranging from 1.65V to 5.5V.

KTS1625 meets the I2C Fast-mode Plus spec up to 1MHz. Internal power-on reset and I2C software reset provide flexible ways to reset the IC. Eight adjustable I2C slave addresses allow multiple KTS1625s in one I2C bus system.

KTS1625 provides multiple ways to program the 16-bit I/O ports. When the port works as input, it can program the polarity, latch, pull-up, pull-down and interrupt functions. The interrupt function includes the level/edge trigger, mask, clear, status features. For system with noisy input, KTS1625 also provides debounce function with programmable debounce time. When the port works as output, it can program output stage with bank/pin selectable push-pull or open-drain options, it can also program four drive strengths of the output stage to optimize the rise/fall times.

KTS1625 is available in RoHS and Green compliant 24-pin 4.0mm x 4.0mm WQFN package.

Features

  • I2C to 16-bit I/O ports expander
  • 1MHz Fast-mode Plus I2C bus
  • Operating voltage range of 1.65V to 5.5V
  • Eight adjustable I2C slave addresses via A2/A1/A0 pins
  • I2C multiple-register group programming with global loop or local loop
  • Active low open-drain interrupt output (INT)
  • Internal power-on reset and I2C software reset
  • Noise filter on SCL/SDA inputs
  • Input/Output port configurable
  • Input with polarity/latch/pull-up/pull-down/interrupt functions
  • Allowing port input voltage above supply
  • Interrupt with trigger/mask/clear/status features
  • Programmable input debounce enable/time
  • Output with bank/pin selectable push-pull or open-drain
  • Bit-wise programmable output drive strength
  • Low standby current of 4μA typical at 3.3V
  • Maximum 25mA driving capability for each port
  • RoHS and Green Compliant

Applications

  • Smartphone, Tablet and Wearables
  • Laptop and Desktop

Packaging Information

Package Dimensions Package Code
WQFN4x4-24 4.00mm x 4.00mm x 0.75mm UAA

Technical Documentation

Description Documents Type
DatasheetKTS1625-04aPDF
Package Outline DrawingWQFN4x4-24 (TQFN4x4-24) UAA PODPDF

Purchase

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