Overview
The TXB0102DCUT, produced by Texas Instruments, is a 2-bit noninverting bidirectional voltage-level translator. This device is designed to facilitate universal low-voltage bidirectional translation between various voltage nodes, ranging from 1.2 V to 5.5 V. It features two separate configurable power-supply rails, VCCA and VCCB, which allow it to operate with different voltage levels on each side. The TXB0102 is particularly useful in mixed-voltage system designs where signal translation between different voltage domains is necessary.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VCCA Supply Voltage | -0.5 | 4.6 | V |
| VCCB Supply Voltage | -0.5 | 6.5 | V |
| Input Voltage (A port) | -0.5 | 4.6 | V |
| Input Voltage (B port) | -0.5 | 6.5 | V |
| Output Voltage Range (High-Impedance or Power-Off State) | -0.5 | VCCA + 0.5 / VCCB + 0.5 | V |
| Continuous Output Current | ±50 | mA | |
| Continuous Current through VCCA, VCCB, or GND | ±100 | mA | |
| Junction Temperature | 150 | °C | |
| Operating Free-Air Temperature | -40 | 85 | °C |
| Data Rate (VCCA = 1.2 V, VCCB = 1.8 V to 5 V) | 20 | Mbps | |
| Pulse Duration (Data Inputs) | 50 | ns |
Key Features
- Bidirectional Voltage-Level Translation: Supports translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.
- Configurable Power-Supply Rails: VCCA and VCCB can be set to different voltage levels, allowing for flexible operation in mixed-voltage systems.
- Output Enable (OE) Input: Allows outputs to be placed in a high-impedance state when OE is low.
- Partial-Power-Down Capability: Ioff circuitry disables outputs when the device is powered down, preventing current backflow.
- Low Propagation Delay: Fast switching characteristics with propagation delays as low as 1.1 ns.
- Compact Packaging: Available in VSSOP (8-pin) and DSBGA (8-pin) packages.
Applications
- Mixed-Voltage System Designs: Ideal for translating signals between different voltage domains in systems that operate at multiple voltage levels.
- Processor Peripherals: Suitable for use in processor-based systems where voltage translation is necessary.
- Desktop PCs and Mobile Devices: Can be used in various consumer electronics to manage voltage differences between different components.
- Industrial and Automotive Systems: Applicable in industrial and automotive environments where robust and reliable voltage translation is required.
Q & A
- What is the primary function of the TXB0102?
The TXB0102 is a 2-bit noninverting bidirectional voltage-level translator, designed to translate signals between different voltage domains.
- What are the acceptable voltage ranges for VCCA and VCCB?
VCCA can range from 1.2 V to 3.6 V, and VCCB can range from 1.65 V to 5.5 V.
- How does the output enable (OE) input function?
The OE input allows the outputs to be placed in a high-impedance state when it is set low.
- What is the purpose of the Ioff circuitry?
The Ioff circuitry disables the outputs when the device is powered down, preventing current backflow and potential damage.
- What are the typical propagation delays for the TXB0102?
Propagation delays can be as low as 1.1 ns, depending on the voltage levels of VCCA and VCCB.
- What are the available package options for the TXB0102?
The TXB0102 is available in VSSOP (8-pin) and DSBGA (8-pin) packages.
- Can the TXB0102 handle partial-power-down applications?
Yes, the device is fully specified for partial-power-down applications using Ioff circuitry.
- What is the maximum continuous output current for the TXB0102?
The maximum continuous output current is ±50 mA.
- What is the operating temperature range for the TXB0102?
The operating free-air temperature range is from -40°C to 85°C.
- What is the maximum data rate supported by the TXB0102?
The device supports data rates up to 100 Mbps, depending on the voltage levels of VCCA and VCCB.
