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TCA9534A Datasheet Preview

TCA9534A Datasheet

Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander

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TCA9534A
SCPS198C – SEPTEMBER 2014 – REVISED FEBRUARY 2017
TCA9534A Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander With Interrupt
Output and Configuration Registers
1 Features
1 Low Standby Current Consumption
• I2C to Parallel Port Expander
• Open-Drain Active-Low Interrupt Output
• Operating Power-Supply Voltage Range of 1.65 V
to 5.5 V
• 5-V Tolerant I/O Ports
• 400-kHz Fast I2C Bus
• Three Hardware Address Pins Allow up to Eight
Devices on the I2C/SMBus
• 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 Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 1000-V Charged-Device Model (C101)
2 Applications
• Servers
• Routers (Telecom Switching Equipment)
• Personal Computers
• Personal Electronics (for example: Gaming
Consoles)
• Industrial Automation
• Products With GPIO-Limited Processors
3 Description
The TCA9534A is a 16-pin device that provides 8 bits
of general purpose parallel input and output (I/O)
expansion for the two-line bidirectional I2C bus (or
SMBus) protocol. The device can operate with a
power supply voltage ranging from 1.65 V to 5.5 V,
which allows for use with a wide range of devices.
The device supports both 100-kHz (Standard-mode)
and 400-kHz (Fast-mode) clock frequencies. I/O
expanders such as the TCA9534A provide a simple
solution when additional I/Os are needed for
switches, sensors, push-buttons, LEDs, fans, and
other similar devices.
The features of the TCA9534A include an interrupt
that is generated on the INT pin. This allows the
master to know when an input port changes state.
The A0, A1, and A2 hardware selectable address
pins allow up to eight TCA9534A devices on the
same I2C bus. The device can also be reset to its
default sate by cycling the power supply and causing
a power-on reset.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TCA9534A
TSSOP (16)
SOIC (16)
5.00 mm × 4.40 mm
10.30 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
I2C or SMBus
Master
(e.g. Processor)
VCC
SDA
SCL
INT
P0
P1
P2
TCA9534A
P3
P4
A0
P5
P6
A1
P7
A2
GND
Peripheral
Devices
• RESET,
ENABLE, or
control
inputs
• INT or
status
outputs
• LEDs
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.




etcTI

TCA9534A Datasheet Preview

TCA9534A Datasheet

Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander

No Preview Available !

TCA9534A
SCPS198C – SEPTEMBER 2014 – REVISED FEBRUARY 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 4
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ..................................... 5
6.2 Handling Ratings....................................................... 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 6
6.5 Electrical Characteristics........................................... 6
6.6 I2C Interface Timing Requirements........................... 7
6.7 Switching Characteristics .......................................... 8
6.8 Typical Characteristics .............................................. 9
7 Parameter Measurement Information ................ 12
8 Detailed Description ............................................ 15
8.1 Overview ................................................................. 15
8.2 Functional Block Diagram ....................................... 16
8.3 Feature Description................................................. 17
8.4 Device Functional Modes........................................ 17
8.5 Programming........................................................... 17
8.6 Register Maps ......................................................... 19
9 Application and Implementation ........................ 24
9.1 Application Information............................................ 24
9.2 Typical Application ................................................. 24
10 Power Supply Recommendations ..................... 27
10.1 Power-On Reset Requirements ........................... 27
11 Layout................................................................... 29
11.1 Layout Guidelines ................................................. 29
11.2 Layout Example .................................................... 29
12 Device and Documentation Support ................. 30
12.1 Related Documentation ....................................... 30
12.2 Receiving Notification of Documentation Updates 30
12.3 Community Resources.......................................... 30
12.4 Trademarks ........................................................... 30
12.5 Electrostatic Discharge Caution ............................ 30
12.6 Glossary ................................................................ 30
13 Mechanical, Packaging, and Orderable
Information ........................................................... 30
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (December 2016) to Revision C
Page
• Updated Figure 20 ............................................................................................................................................................... 13
• Updated address in Table 1 ................................................................................................................................................. 18
Changes from Revision A (September 2014) to Revision B
Page
• Updated the Description section ............................................................................................................................................ 1
• Added DW package................................................................................................................................................................ 1
• Corrected ESD ratings to reflect ± ratings.............................................................................................................................. 5
• VIH values, improved performance ........................................................................................................................................ 5
• Made changes to IOL in the Recommended Operating Conditions table................................................................................ 5
• Changed VPORR limits.............................................................................................................................................................. 6
• Changed VOH at VCC = 1.65 V................................................................................................................................................. 6
• Updated IOL in the Electrical Characteristics table.................................................................................................................. 6
• Changed ICC in the Electrical Characteristics table ................................................................................................................ 7
• Deleted ΔICC parameter from the Electrical Characteristics table .......................................................................................... 7
• Increased the pin capacitance maximum, decreased typical ................................................................................................. 7
• Updated graphs in Typical Characteristics section ................................................................................................................ 9
• Updated Interrupt Output (INT) section ................................................................................................................................ 17
• Added the Calculating Junction Temperature and Power Dissipation section..................................................................... 25
• Updated parameter values in Table 8 ................................................................................................................................. 27
• Added VCC_MV to Table 8 ..................................................................................................................................................... 27
• Updated Figure 39 ............................................................................................................................................................... 27
2
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Part Number TCA9534A
Description Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander
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