Overview
The TXB0104PWR, produced by Texas Instruments, is a 4-bit bidirectional voltage-level translator designed to facilitate communication between devices operating at different voltage levels. This IC uses two separate configurable power-supply rails, allowing for universal low-voltage bidirectional translation between various voltage nodes such as 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V. The device features auto direction sensing, eliminating the need for a direction control signal, and includes robust ESD protection and low power consumption, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Description |
|---|---|
| Package | TSSOP (PW) with 14 pins |
| Operating Temperature Range | -40°C to 85°C |
| Voltage Range (A Port) | 1.2V to 3.6V |
| Voltage Range (B Port) | 1.65V to 5.5V |
| ESD Protection (A Port) | 2500-V Human-Body Model, 1500-V Charged-Device Model |
| ESD Protection (B Port) | ±15-kV Human-Body Model, 1500-V Charged-Device Model |
| Low Power Consumption | 5-µA maximum ICC |
| Latch-Up Performance | Exceeds 100 mA Per JESD 78, Class II |
| Output Enable (OE) Input | Referenced to VCCA |
Key Features
- Bidirectional Voltage Translation: Enables communication between devices at different voltage levels without the need for a direction control signal.
- Auto Direction Sensing: Automatically senses the direction of data flow, eliminating the need for a direction control signal.
- Low Power Consumption: Maximum ICC of 5 µA, making it suitable for battery-operated devices and power-sensitive applications.
- ESD Protection: Provides robust ESD protection exceeding JESD 22 standards.
- High-Speed Operation: Designed for high-speed data transmission, suitable for applications requiring rapid data exchange.
- Open-Drain I/O Ports: Allows various devices to be interfaced.
- Schmitt-Trigger Inputs: Offers hysteresis and noise immunity).
- VCC Isolation Feature: If either VCC input is at GND, all outputs are in the high-impedance state).
Applications
- Microcontrollers with Mixed Voltages: Facilitates communication between microcontrollers operating at different voltage levels).
- System Block Communication: Ensures proper data exchange between different blocks or subsystems in complex electronic systems).
- Automotive Electronics: Used to translate voltages between different modules in automotive systems).
- Bus Extender for Remote Devices: Facilitates reliable data transfer over longer distances using I2C or other communication buses).
- Data Converters Interface: Used to avoid signal degradation in ADCs and microcontrollers).
- Customized Mixed-Voltage Systems: Enables bidirectional voltage translation in customized mixed-voltage systems).
- I2C/TWI Bus Communication: Bridges the gap between two-wire interfaces and I2C buses).
- Sensor Network Level Shift: Integrates sensors with different voltage requirements).
- Battery-Powered Devices: Suitable for battery-powered devices such as smartphones, tablets, and wearable electronics).
- Industrial Control Systems: Facilitates communication and coordination among components in industrial automation and control systems).
- UART/Serial Communication: Used for communication between devices with different voltage levels).
Q & A
- What is the TXB0104PWR used for?
The TXB0104PWR is a 4-bit bidirectional voltage-level translator used to facilitate communication between devices operating at different voltage levels.
- What are the voltage ranges for the A and B ports of the TXB0104PWR?
The A port operates from 1.2V to 3.6V, and the B port operates from 1.65V to 5.5V.
- What is the ESD protection level for the TXB0104PWR?
The TXB0104PWR offers ±15-kV ESD protection on the B port and 2500-V ESD protection on the A port.
- How does the auto direction sensing feature work?
The auto direction sensing feature automatically determines the direction of data flow, eliminating the need for a direction control signal).
- What is the maximum power consumption of the TXB0104PWR?
The maximum power consumption is 5 µA).
- What is the purpose of the VCC isolation feature?
If either VCC input is at GND, all outputs are placed in the high-impedance state).
- How should the OE input be configured during power-up or power-down?
The OE input must be tied to GND through a pulldown resistor to ensure the high-impedance state during power-up or power-down).
- What types of applications can the TXB0104PWR be used in?
The TXB0104PWR can be used in various applications including microcontrollers, system block communication, automotive electronics, bus extenders, data converters, customized mixed-voltage systems, I2C/TWI bus communication, sensor networks, battery-powered devices, and industrial control systems).
- How does the TXB0104PWR support partial power-down mode operation?
The I OFF circuitry disables the outputs, preventing damaging current backflow through the device when the device is powered down).
- What is the recommended operating condition for the TXB0104PWR?
The recommended operating conditions should be followed as specified in the datasheet and application notes provided by Texas Instruments).
