Specification	TCA9534PWR

Clock Frequency	400 kHz
Current - Output Source/Sink [custom]	10 mA
Current - Output Source/Sink [custom]	25 mA
Interface	I2C
Interrupt Output	True
Mounting Type	Surface Mount
Number of I/O	8
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	Push-Pull
Package / Case	16-TSSOP
Package / Case [x]	0.173 in
Package / Case [y]	4.4 mm
Supplier Device Package	16-TSSOP
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	1.65 V

TCA9534A Series

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

Part	Package / Case [x]	Package / Case	Package / Case [y]	Operating Temperature [Max]	Operating Temperature [Min]	Number of I/O	Output Type	Supplier Device Package	Voltage - Supply [Max]	Voltage - Supply [Min]	Clock Frequency	Interface	Mounting Type	Current - Output Source/Sink [custom]	Current - Output Source/Sink [custom]
Texas Instruments TCA9534DWT	0.295 in	16-SOIC	7.5 mm	85 °C	-40 °C	8	Push-Pull	16-SOIC	5.5 V	1.65 V	400 kHz	I2C	Surface Mount
Texas Instruments TCA9534ADWR	0.295 in	16-SOIC	7.5 mm	85 °C	-40 °C	8	Push-Pull	16-SOIC	5.5 V	1.65 V	400 kHz	I2C	Surface Mount
Texas Instruments TCA9534PWR	0.173 in	16-TSSOP	4.4 mm	85 °C	-40 °C	8	Push-Pull	16-TSSOP	5.5 V	1.65 V	400 kHz	I2C	Surface Mount	10 mA	25 mA

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.38
		10	$ 1.23
		25	$ 1.17
		100	$ 0.96
		250	$ 0.90
		500	$ 0.79
		1000	$ 0.63
	Digi-Reel®	1	$ 1.38
		10	$ 1.23
		25	$ 1.17
		100	$ 0.96
		250	$ 0.90
		500	$ 0.79
		1000	$ 0.63
	Tape & Reel (TR)	2000	$ 0.59
		6000	$ 0.56
		10000	$ 0.54
Texas Instruments	LARGE T&R	1	$ 0.93
		100	$ 0.77
		250	$ 0.55
		1000	$ 0.41

Description

General part information

TCA9534A Series

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 theINTpin. 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.