Packaging information
| Package | Pins TSSOP (PW) | 16 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the TCA6408A-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- 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)
Description for the TCA6408A-Q1
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.