TCA6408A-Q1

SDA

I

(e.g. Processor)

SCL

INT

RESET

VCCI

VCCP

GND

ADDR

P0

P1

P2

P3

P4

P5

P6

P7

Peripheral

Devices

x

RESET, EN or

Control Inputs

x

INT or status

outputs

x

LEDs

x

Keypad

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TCA6408A-Q1

SCPS234 – SEPTEMBER 2016

1

1 Features

1

•

•

Operating Power-Supply Voltage Range of 1.65 V

to 3.6 V

•

Allows Bidirectional Voltage-Level Translation and

GPIO Expansion Between 1.8-, 2.5-, and 3.3-V

•

Low Standby Current Consumption

•

•

Hardware Address Pin Allows Two TCA6408A-Q1

•

Active-Low Reset (RESET) Input

•

Open-Drain Active-Low Interrupt (INT) Output

•

Input and Output Configuration Register

•

Polarity Inversion Register

•

Internal Power-On Reset

•

Power Up With All Channels Configured as Inputs

•

No Glitch On Power Up

•

Noise Filter on SCL/SDA Inputs

•

Latched Outputs With High-Current Drive

Maximum Capability for Directly Driving LEDs

•

Latch-Up Performance meets 100 mA Per AEC

Q100-004

•

Schmitt-Trigger Action Allows Slow Input

Transition and Better Switching Noise Immunity at

the SCL and SDA Inputs

•

ESD Protection

–

2000-V Human Body Model (Q100-002)

–

1000-V Charged-Device Model (Q100-011)

2 Applications

•

Automotive Infotainment

•

Advanced Drive Assistance Systems (ADAS)

•

Automotive Body Electronics

•

HEV, EV, and Power train

•

Industrial, Factory, and Building Automation

•

Test & Measurement

•

EPOS

3 Description

The TCA6408A-Q1 is a 16-pin device that provides 8-

bits of general purpose parallel input and output (I/O)

SMBus) protocol. This device can operate with a

power supply voltage ranging from 1.65 V to 3.6 V on

with

next-generation

microprocessors

and

microcontrollers on the SDA/SCL side, where supply

levels are dropping down to conserve power. In

contrast

to

the

dropping

power

supplies

of

microprocessors and microcontrollers, some PCB

components such as LEDs remain at a higher power

supply.

The device supports both 100-kHz (Standard-mode)

and 400-kHz (Fast-mode) clock frequencies. I/O

expanders such as the TCA6408A-Q1 provide a

simple solution when additional I/Os are needed for

switches, sensors, push-buttons, LEDs, fans, and so

forth.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TCA6408A-Q1

TSSOP (16)

5.00 mm × 4.40 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Simplified Schematic