TCA6424ARGJR

Part: TCA6424A from Texas Instruments

Type: Low-Voltage 24-Bit I2C and SMBus I/O Expander

Key Specs:

• Operating power-supply voltage range: 1.65 V to 5.5 V
• Standby current consumption: 1 μA
• I2C Bus speed: 400-kHz
• Number of I/O bits: 24-Bit

Features:

• Allows bidirectional voltage-level translation
• I2C to Parallel port expander
• Schmitt-Trigger action on SCL and SDA inputs
• 5-V Tolerant I/O ports
• Active-low reset input (RESET)
• Open-drain active-low interrupt output (INT)
• Input/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/SDA inputs
• Latched outputs with high-current drive capability for directly driving LEDs
• Latch-up performance exceeds 100 mA per JESD 78, class II
• ESD protection exceeds JESD 22 (2000-V Human-body model, 200-V Machine model, 1000-V Charged-device model)
• One hardware pin (ADDR) to program I2C address for up to two devices

Applications:

• General-purpose remote I/O expansion for microcontrollers
• Interfacing with next-generation microprocessors and microcontrollers
• Driving LEDs

Package:

• UQFN (32): 5.00 mm × 5.00 mm

• Operating power-supply voltage range of 1.65 V to 5.5 V
• Allows bidirectional voltage-level translation and GPIO expansion between:
  • 1.8-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
  • 2.5-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
  • 3.3-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
  • 5-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
• I ²C to Parallel port expander
• Low standby current consumption of 1 μA
• Schmitt-Trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
  • Vhys = 0.18 V Typ at 1.8 V
  • Vhys = 0.25 V Typ at 2.5 V
  • Vhys = 0.33 V Typ at 3.3 V
  • Vhys = 0.5 V Typ at 5 V
• 5-V Tolerant I/O ports
• Active-low reset input ( RESET)
• Open-drain active-low interrupt output ( INT)
• 400-kHz Fast I2C Bus
• Input/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/SDA inputs
• Latched outputs with high-current drive maximum capability for directly driving LEDs
• Latch-up performance exceeds 100 mA per JESD 78, class II
• ESD protection exceeds JESD 22
  • 2000-V Human-body model (A114-A)
  • 200-V Machine model (A115-A)
  • 1000-V Charged-device model (C101)

If used, the exposed center pad must be connected as a secondary ground or left electrically open.

over recommended operating free-air temperature range, VCCI = 1.65 V to 5.5 V (unless otherwise noted)

over operating free-air temperature range (unless otherwise noted)

⁽¹⁾ Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

Product Folder Links: TCA6424A

⁽²⁾ The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.

⁽²⁾ JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Pins listed as 2000 V may actually have higher performance.

⁽¹⁾ For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report.