TCA9554A

Peripheral

Devices

I2C or SMBus

Master

(e.g. Processor)

SDA

SCL

INT

P0

P1

P2

P3

P4

P5

P6

P7

VCC

A1

GND

A0

•

,

ENABLE, or

control

inputs

•

or

status

outputs

• LEDs

RESET

INT

A2

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TCA9554A

SCPS196D – DECEMBER 2010 – REVISED AUGUST 2015

Output and Configuration Registers

1 Features

3 Description

The TCA9554A is a 16-pin device that provides 8 bits

1

•

of

general

purpose

parallel

input/output

(I/O)

•

Open-Drain Active-Low Interrupt Output

•

Operating Power-Supply Voltage Range of 1.65 V

SMBus) protocol. The device can operate with a

to 5.5 V

power supply voltage ranging from 1.65 V to 5.5 V.

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

•

5-V Tolerant I/O Ports

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

•

expanders such as the TCA9554A provide a simple

•

Three Hardware Address Pins Allow up to Eight

solution

when

additional

I/Os

are

needed

for

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

other similar devices.

•

Input/Output Configuration Register

•

Polarity Inversion Register

The features of the TCA9554A include an interrupt

that is generated on the INT pin whenever an input

•

Internal Power-On Reset

port changes state. The A0, A1, and A2 hardware

•

Low Standby Current Consumption

selectable address pins allow up to eight TCA9554A

•

Power-Up With All Channels Configured as Inputs

reset to its default sate by cycling the power supply

•

No Glitch on Power Up

and causing a power-on reset.

•

Noise Filter on SCL/SDA Inputs

•

Latched Outputs With High-Current Drive

Device Information(1)

Maximum Capability for Directly Driving LEDs

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Latch-Up Performance Exceeds 100 mA Per

TSSOP (16)

5.00 mm × 4.40 mm

JESD 78, Class II

TCA9554A

SSOP (16)

4.90 mm × 3.90 mm

•

ESD Protection Exceeds JESD 22

SSOP (16)

6.20 mm × 5.30 mm

–

2000-V Human-Body Model (A114-A)

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

the end of the datasheet.

–

1000-V Charged-Device Model (C101)

2 Applications

•

Servers

•

Routers (Telecom Switching Equipment)

•

Personal Computers

•

Personal Electronics (e.g. Gaming Consoles)

•

Industrial Automation

•

Products With GPIO-Limited Processors

Simplified Block Diagram

1

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.