Features

• I2C to 16-bit I/O ports expander

• 1MHz Fast-mode Plus I2C bus

• Operating voltage range of 1.65V to 5.5V for

both I2C bus and I/O ports

• Four adjustable I2C slave addresses via ADDR

• I2C multiple-register group programming with

global loop or local loop

• Active low reset input (̅R̅̅E̅̅S̅̅E̅̅T̅)

• Active low open-drain interrupt output (̅IN̅̅̅T̅)

• 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

Brief Description

KTS1622 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.

KTS1622 has separate power rails (VDD_I2C and VDD_P)

for I2C bus and I/O ports, both ranging from 1.65V to 5.5V,

allowing mixed power system where I2C bus power is not

compatible with I/O port power.

KTS1622 meets the I2C Fast-mode Plus spec up to 1MHz.

External reset input, internal power-on reset and I2C

software reset provide flexible ways to reset the IC. Four

adjustable I2C slave addresses allow multiple KTS1622s in

one I2C bus system.

KTS1622 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,

KTS1622 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.

KTS1622 is available in RoHS and Green compliant

25-ball 2.0mm x 2.0mm FO-WLP package and 24-pin

4.0mm x 4.0mm TQFN package.