Overview
The TXB0102DCUTG4, produced by Texas Instruments, is a 2-bit noninverting bidirectional voltage-level translator. This device is designed to facilitate communication between devices or systems operating at different voltage levels. It supports universal low-voltage bidirectional translation between various voltage nodes such as 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5 V. The TXB0102 uses two separate configurable power-supply rails, VCCA and VCCB, which can accept supply voltages ranging from 1.2 V to 3.6 V and 1.65 V to 5.5 V, respectively. The device is fully specified for partial-power-down applications and includes Ioff circuitry to prevent current backflow when the device is powered down.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VCCA Supply Voltage | 0 | 4.6 | V |
| VCCB Supply Voltage | 0 | 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 (A port), VCCB + 0.5 (B port) | V |
| Continuous Output Current | ±50 | mA | |
| Operating Free-Air Temperature | -40 | 85 | °C |
| Junction Temperature | 150 | °C | |
| Data Rate (Typical) | 20 Mbps to 100 Mbps |
Key Features
- Bidirectional voltage-level translation between different voltage nodes (1.2 V to 5 V).
- Two separate configurable power-supply rails (VCCA and VCCB).
- Supports partial-power-down applications with Ioff circuitry to prevent current backflow.
- Output-enable (OE) input to place outputs in high-impedance state.
- NanoFree™ technology using the die as the package.
- Available in VSSOP (8-pin) and DSBGA (8-pin) packages.
Applications
- Interfacing devices or systems operating at different voltage levels.
- Level-translation in various electronic systems, including desktop PCs and other consumer electronics.
- Use in mixed-voltage systems where different components operate at different supply voltages.
Q & A
- What is the primary function of the TXB0102?
The primary function of the TXB0102 is to perform bidirectional voltage-level translation between devices or systems operating at different voltage levels.
- What are the acceptable voltage ranges for VCCA and VCCB?
VCCA can accept supply voltages from 1.2 V to 3.6 V, and VCCB can accept supply voltages from 1.65 V to 5.5 V.
- What is the purpose of the output-enable (OE) input?
The output-enable (OE) input is used to place all outputs in the high-impedance state when it is set low.
- What is Ioff circuitry, and what does it do?
Ioff circuitry is used to disable the outputs when the device is powered down, preventing current backflow into the device.
- What are the available package options for the TXB0102?
The TXB0102 is available in VSSOP (8-pin) and DSBGA (8-pin) packages.
- What is the maximum data rate supported by the TXB0102?
The maximum data rate supported by the TXB0102 can range from 20 Mbps to 100 Mbps depending on the supply voltages.
- What is the operating temperature range for the TXB0102?
The operating free-air temperature range for the TXB0102 is from -40°C to 85°C.
- Can pullup or pulldown resistors be used with the TXB0102?
Pullup or pulldown resistors can be used, but the resistor value must be over 50 kΩ. It is recommended to avoid using pullup resistors on I/O pins unless necessary for open-drain communication.
- What is NanoFree™ technology, and how is it used in the TXB0102?
NanoFree™ technology uses the die as the package, which is a breakthrough in IC packaging concepts.
- What are some common applications for the TXB0102?
The TXB0102 is commonly used in interfacing devices or systems operating at different voltage levels, such as in desktop PCs and other consumer electronics.
