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TCA6408A-Q1

ACTIVE

Automotive 8-bit translating I2C/SMBus I/O expander with interrupt, reset & config registers

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Data sheet

TCA6408A-Q1

ACTIVE
Data sheet Order now

Product details

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
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
TSSOP (PW) 16 32 mm² 5 x 6.4
  • 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)
  • 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)

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.
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* Data sheet TCA6408A-Q1 Low-Voltage 8-Bit I2C and SMBus I/O Expander With Interrupt Output datasheet (Rev. A) PDF | HTML 06 Feb 2023
Functional safety information TCA6408A-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 29 Oct 2020
Application note I2C Dynamic Addressing 25 Apr 2019

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