TCA6408A-Q1 Texas instruments

TCA6408A-Q1

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TCA6408A-Q1

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Описание

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.

AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C, T_A
Functional Safety-Capable
- Documentation available to aid functional safety system design
I²C to parallel port expander
Operating power-supply voltage range of 1.65 V to 3.6 V
Allows bidirectional voltage-level translation and GPIO expansion between 1.8-, 2.5-, and 3.3-V I²C bus and P-ports
Low standby current consumption
400-kHz Fast I²C Bus
Hardware address pin allows Two TCA6408A-Q1 devices on the same I²C/SMBus bus
Active-low reset ( RESET) input
Open-drain active-low interrupt ( INT) output
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 and SDA inputs
Latched outputs with high-current drive maximum capability for directly driving LEDs
Latch-up performance meets 100 mA per AEC Q100-004
Schmitt-Trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
ESD protection
- 2000-V Human body model (Q100-002)
- 1000-V Charged-device model (Q100-011)

Number of I/Os	8
Features	Adjustable I/O level, Configuration registers, Interrupt pin, Reset pin
Supply voltage (min) (V)	1.65
Supply voltage (max) (V)	3.6
Addresses	2
Rating	Automotive
Frequency (max) (MHz)	0.4
Operating temperature range (°C)	-40 to 125