NXP USA Inc.
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PCA9412AUKZ

PCA9412AUKZ

Product Overview

Category

PCA9412AUKZ belongs to the category of integrated circuits (ICs).

Use

The PCA9412AUKZ is commonly used as a level shifter and translator for I2C-bus and SMBus applications.

Characteristics

  • The PCA9412AUKZ is a bidirectional voltage-level translator with automatic direction sensing.
  • It supports voltage translation between 1.0 V and 5.5 V, making it suitable for various applications.
  • This IC has built-in ESD protection, ensuring robustness against electrostatic discharge.
  • It operates at high speed, allowing for efficient data transfer.

Package

The PCA9412AUKZ is available in a small package, such as a 20-pin TSSOP (Thin Shrink Small Outline Package).

Essence

The essence of PCA9412AUKZ lies in its ability to facilitate communication between devices operating at different voltage levels within I2C-bus and SMBus systems.

Packaging/Quantity

The PCA9412AUKZ is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Supply Voltage: 1.0 V to 5.5 V
  • Operating Temperature Range: -40°C to +85°C
  • Maximum Data Rate: 400 kbit/s
  • Number of Channels: 2
  • Input/Output Logic Compatibility: CMOS/TTL

Detailed Pin Configuration

The PCA9412AUKZ features a 20-pin TSSOP package with the following pin configuration:

  1. OE1 (Output Enable 1)
  2. A1 (Channel 1 Input/Output)
  3. B1 (Channel 1 Input/Output)
  4. GND (Ground)
  5. VCC (Supply Voltage)
  6. A2 (Channel 2 Input/Output)
  7. B2 (Channel 2 Input/Output)
  8. OE2 (Output Enable 2)
  9. SDA1 (I2C-bus/SMBus Data Line 1)
  10. SCL1 (I2C-bus/SMBus Clock Line 1)
  11. VREF1 (Reference Voltage 1)
  12. VREF2 (Reference Voltage 2)
  13. SDA2 (I2C-bus/SMBus Data Line 2)
  14. SCL2 (I2C-bus/SMBus Clock Line 2)
  15. GND (Ground)
  16. NC (No Connection)
  17. NC (No Connection)
  18. NC (No Connection)
  19. NC (No Connection)
  20. VCC (Supply Voltage)

Functional Features

  • Bidirectional voltage-level translation between different voltage domains.
  • Automatic direction sensing eliminates the need for additional control signals.
  • Supports I2C-bus and SMBus protocols.
  • Built-in ESD protection enhances device reliability.
  • High-speed operation allows for efficient data transfer.

Advantages and Disadvantages

Advantages

  • Simplifies interfacing between devices operating at different voltage levels.
  • Automatic direction sensing reduces complexity in system design.
  • Robust ESD protection ensures device durability.
  • Wide supply voltage range enables compatibility with various applications.

Disadvantages

  • Limited to I2C-bus and SMBus applications, not suitable for other communication protocols.
  • May require additional circuitry for level shifting in certain scenarios.

Working Principles

The PCA9412AUKZ operates by automatically detecting the direction of data flow on the I2C-bus or SMBus lines. It then translates the voltage levels between the two connected devices accordingly, ensuring proper communication. The built-in ESD protection safeguards the IC from electrostatic discharge, enhancing its reliability.

Detailed Application Field Plans

The PCA9412AUKZ finds applications in various fields where voltage-level translation is required for I2C-bus and SMBus communication. Some specific application areas include:

  1. Consumer Electronics: Facilitating communication between different voltage devices in smartphones, tablets, and smart home systems.
  2. Automotive: Enabling compatibility between components operating at different voltage levels in automotive electronics, such as infotainment systems and advanced driver-assistance systems (ADAS).
  3. Industrial Automation: Supporting voltage translation in industrial control systems, PLCs (Programmable Logic Controllers), and sensor networks.
  4. Medical Devices: Ensuring seamless communication between medical equipment with varying voltage requirements.
  5. Internet of Things (IoT): Enabling connectivity between IoT devices operating at different voltage levels.

Detailed and Complete Alternative Models

  1. PCA9306: Bidirectional I2C-bus and SMBus voltage-level translator with automatic direction sensing. Supports voltage translation between 1.2 V and 5.5 V.
  2. TXB0108: Eight-channel bi-directional

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací PCA9412AUKZ v technických řešeních

Sure! Here are 10 common questions and answers related to the application of PCA9412AUKZ in technical solutions:

  1. Q: What is PCA9412AUKZ? A: PCA9412AUKZ is a high-speed, low-power, 12-bit I2C-bus and SMBus I/O expander with interrupt output and configuration registers.

  2. Q: What are the key features of PCA9412AUKZ? A: The key features include 12 programmable I/O pins, interrupt output, I2C-bus/SMBus interface, and configurable input/output polarity.

  3. Q: How can PCA9412AUKZ be used in technical solutions? A: PCA9412AUKZ can be used to expand the number of available I/O pins in microcontroller-based systems, allowing for more flexibility in connecting peripherals and sensors.

  4. Q: What is the maximum operating frequency of PCA9412AUKZ? A: PCA9412AUKZ supports a maximum operating frequency of 400 kHz for I2C-bus communication.

  5. Q: Can PCA9412AUKZ be used with both 3.3V and 5V systems? A: Yes, PCA9412AUKZ is compatible with both 3.3V and 5V systems, making it versatile for various applications.

  6. Q: How many interrupt sources does PCA9412AUKZ support? A: PCA9412AUKZ supports up to 8 interrupt sources, which can be individually enabled or disabled.

  7. Q: Is PCA9412AUKZ capable of driving LEDs directly? A: Yes, PCA9412AUKZ has open-drain outputs that can sink current, making it suitable for driving LEDs or other low-power devices.

  8. Q: Can PCA9412AUKZ be cascaded with other I/O expanders? A: Yes, PCA9412AUKZ can be cascaded with other I2C-bus/SMBus compatible I/O expanders to further increase the number of available I/O pins.

  9. Q: Does PCA9412AUKZ have built-in pull-up resistors for I2C-bus communication? A: No, PCA9412AUKZ does not have built-in pull-up resistors. External pull-up resistors are required for proper I2C-bus operation.

  10. Q: What is the package type of PCA9412AUKZ? A: PCA9412AUKZ is available in a 20-pin TSSOP (Thin Shrink Small Outline Package) for easy integration into PCB designs.

Please note that these answers are general and may vary depending on the specific application and requirements.