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See Technical Specifications

TCA9534APWR

8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, & config registers

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TCA9534APWR
Datasheet:

TCA9534APWR Datasheet (PDF)
Programmable:

Not Verified
Number of I/O:

8
Interface:

I²C
Interrupt Output:

Yes
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TCA9534APWR General 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.

Key Features

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)

Specifications

Category	Integrated Circuits (ICs)InterfaceI/O Expanders	Series	-
Programmable	Not Verified	Number of I/O	8
Interface	I²C	Interrupt Output	Yes
Features	-	Output Type	Push-Pull
Current - Output Source/Sink	-	Clock Frequency	400 kHz
Voltage - Supply	1.65V ~ 5.5V	Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount	Base Product Number	TCA9534