TCA9554A Series

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

Catalog

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

Part	Mounting Type	Features	Output Type	Interface	Number of I/O	Operating Temperature [Max]	Operating Temperature [Min]	Clock Frequency	Package / Case	Package / Case [custom]	Package / Case [custom]	Voltage - Supply [Max]	Voltage - Supply [Min]	Supplier Device Package	Package / Case [x]	Package / Case [y]	Package / Case	Package / Case	Current - Output Source/Sink [custom]	Current - Output Source/Sink [custom]
Texas Instruments TCA9554ADBR	Surface Mount	POR	Push-Pull	I2C SMBus	8	85 °C	-40 °C	400 kHz	16-SSOP	0.209 in	5.3 mm	5.5 V	1.65 V	16-SSOP
Texas Instruments TCA9554DBR	Surface Mount	POR	Push-Pull	I2C	8	85 °C	-40 °C	400 kHz	16-SSOP	0.209 in	5.3 mm	5.5 V	1.65 V	16-SSOP
Texas Instruments TCA9554DWT	Surface Mount	POR	Push-Pull	I2C	8	85 °C	-40 °C	400 kHz	16-SOIC			5.5 V	1.65 V	16-SOIC	0.295 in	7.5 mm
Texas Instruments TCA9554ADBQR	Surface Mount	POR	Push-Pull	I2C SMBus	8	85 °C	-40 °C	400 kHz	16-SSOP			5.5 V	1.65 V	16-SSOP			0.154 in	3.9 mm
Texas Instruments TCA9554PWR	Surface Mount	POR	Push-Pull	I2C SMBus	8	85 °C	-40 °C	400 kHz	16-TSSOP			5.5 V	1.65 V	16-TSSOP	0.173 in	4.4 mm			10 mA	25 mA
Texas Instruments TCA9554DWR	Surface Mount	POR	Push-Pull	I2C	8	85 °C	-40 °C	400 kHz	16-SOIC			5.5 V	1.65 V	16-SOIC	0.295 in	7.5 mm
Texas Instruments TCA9554APWR	Surface Mount	POR	Push-Pull	I2C SMBus	8	85 °C	-40 °C	400 kHz	16-TSSOP			5.5 V	1.65 V	16-TSSOP	0.173 in	4.4 mm			10 mA	25 mA

Catalog

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

Key Features

• I2C to Parallel Port ExpanderOpen-Drain Active-Low Interrupt OutputOperating Power-Supply Voltage Range of 1.65 V to 5.5 V5-V Tolerant I/O Ports400-kHz Fast I2C BusThree Hardware Address Pins Allow up to Eight Devices on the I2C/SMBusInput and Output Configuration RegisterPolarity Inversion RegisterInternal Power-On ResetLow Standby Current ConsumptionPower-Up With All Channels Configured as InputsNo Glitch on Power UpNoise Filter on SCL/SDA InputsLatched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDsLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)1000-V Charged-Device Model (C101)I2C to Parallel Port ExpanderOpen-Drain Active-Low Interrupt OutputOperating Power-Supply Voltage Range of 1.65 V to 5.5 V5-V Tolerant I/O Ports400-kHz Fast I2C BusThree Hardware Address Pins Allow up to Eight Devices on the I2C/SMBusInput and Output Configuration RegisterPolarity Inversion RegisterInternal Power-On ResetLow Standby Current ConsumptionPower-Up With All Channels Configured as InputsNo Glitch on Power UpNoise Filter on SCL/SDA InputsLatched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDsLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)1000-V Charged-Device Model (C101)

Description

The TCA9554A is a 16-pin device that provides 8 bits of general purpose parallel input-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. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA9554A 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 TCA9554A include an interrupt that is generated on theINTpin whenever an input port changes state. The A0, A1, and A2 hardware selectable address pins allow up to eight TCA9554A 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. The TCA9554A is a 16-pin device that provides 8 bits of general purpose parallel input-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. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA9554A 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 TCA9554A include an interrupt that is generated on theINTpin whenever an input port changes state. The A0, A1, and A2 hardware selectable address pins allow up to eight TCA9554A 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.