TCA6408A-Q1 Series

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

Catalog

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

Part	Features	Clock Frequency	Operating Temperature [Max]	Operating Temperature [Min]	Number of I/O	Supplier Device Package	Mounting Type	Output Type	Current - Output Source/Sink [custom]	Current - Output Source/Sink [custom]	Package / Case [x]	Package / Case	Package / Case [y]	Interface	Voltage - Supply [Max]	Voltage - Supply [Min]	Qualification	Grade
Texas Instruments TCA6408APWR	POR	400 kHz	85 °C	-40 °C	8	16-TSSOP	Surface Mount	Push-Pull	10 mA	25 mA	0.173 in	16-TSSOP	4.4 mm	I2C SMBus	5.5 V	1.65 V
Texas Instruments TCA6408ARGTR	POR	400 kHz	85 °C	-40 °C	8	16-VQFN (3x3)	Surface Mount	Push-Pull	10 mA	25 mA		16-VFQFN Exposed Pad		I2C SMBus	5.5 V	1.65 V
Texas Instruments TCA6408AQPWRQ1	POR	400 kHz	125 °C	-40 °C	8	16-TSSOP	Surface Mount	Push-Pull	10 mA	25 mA	0.173 in	16-TSSOP	4.4 mm	I2C SMBus	3.6 V	1.65 V	AEC-Q100	Automotive

Catalog

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

Key Features

• AEC-Q100 qualified for automotive applicationsTemperature grade 1: –40°C to +125°C, TAFunctional Safety-CapableDocumentation available to aid functional safety system designI2C to parallel port expanderOperating power-supply voltage range of 1.65 V to 3.6 VAllows bidirectional voltage-level translation and GPIO expansion between 1.8-, 2.5-, and 3.3-V I2C bus and P-portsLow standby current consumption400-kHz Fast I2C BusHardware address pin allows Two TCA6408A-Q1 devices on the same I2C/SMBus busActive-low reset (RESET) inputOpen-drain active-low interrupt (INT) outputInput and output configuration registerPolarity inversion registerInternal power-on resetPower up with all channels configured as inputsNo glitch on power upNoise filter on SCL and SDA inputsLatched outputs with high-current drive maximum capability for directly driving LEDsLatch-up performance meets 100 mA per AEC Q100-004Schmitt-Trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputsESD protection2000-V Human body model (Q100-002)1000-V Charged-device model (Q100-011)AEC-Q100 qualified for automotive applicationsTemperature grade 1: –40°C to +125°C, TAFunctional Safety-CapableDocumentation available to aid functional safety system designI2C to parallel port expanderOperating power-supply voltage range of 1.65 V to 3.6 VAllows bidirectional voltage-level translation and GPIO expansion between 1.8-, 2.5-, and 3.3-V I2C bus and P-portsLow standby current consumption400-kHz Fast I2C BusHardware address pin allows Two TCA6408A-Q1 devices on the same I2C/SMBus busActive-low reset (RESET) inputOpen-drain active-low interrupt (INT) outputInput and output configuration registerPolarity inversion registerInternal power-on resetPower up with all channels configured as inputsNo glitch on power upNoise filter on SCL and SDA inputsLatched outputs with high-current drive maximum capability for directly driving LEDsLatch-up performance meets 100 mA per AEC Q100-004Schmitt-Trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputsESD protection2000-V Human body model (Q100-002)1000-V Charged-device model (Q100-011)

Description

The TCA6408A-Q1 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. This device can operate with a power supply voltage ranging from 1.65 V to 3.6 V on both the I2C bus side (VCCI) and on the P-port side (VCCP). This allows the TCA6408A-Q1 to interface with next-generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power. In contrast to the dropping power supplies of microprocessors and microcontrollers, some PCB components such as LEDs remain at a higher power supply. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA6408A-Q1 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so forth. The TCA6408A-Q1 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. This device can operate with a power supply voltage ranging from 1.65 V to 3.6 V on both the I2C bus side (VCCI) and on the P-port side (VCCP). This allows the TCA6408A-Q1 to interface with next-generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power. In contrast to the dropping power supplies of microprocessors and microcontrollers, some PCB components such as LEDs remain at a higher power supply. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA6408A-Q1 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so forth.