Overview
The TXB0101DBVR, produced by Texas Instruments, is a 1-bit bidirectional level-shifting and voltage translator. This device is designed to translate logic voltage levels between two different voltage domains, making it ideal for interfacing devices or systems operating at different interface voltages. The TXB0101 accepts I/O voltages ranging from 1.2 V to 3.6 V on the A port and from 1.65 V to 5.5 V on the B port, ensuring compatibility with a wide range of systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range (A Port) | 1.2 V to 3.6 V | V |
| Input Voltage Range (B Port) | 1.65 V to 5.5 V | V |
| Operating Temperature | -40°C to 85°C | °C |
| Data Rate | Up to 100 Mbps | Mbps |
| Propagation Delay (Max) | 4 ns | ns |
| Package Type | SOT-23-6 | |
| Number of Bits | 1 | |
| Input Type | Logic | |
| Output Type | Logic |
Key Features
- Directionless Level-Shifting: The TXB0101 does not require a direction-control signal, allowing bidirectional data flow without manual control.
- Buffered Architecture: The device includes edge rate accelerators (one-shots) to enhance the data rate.
- High-impedance State: The device can be disabled by setting the OE input low, placing all I/Os in a high-impedance state.
- Low Output Impedance: Typical output impedance ranges from 40 Ω to 70 Ω depending on the output voltage.
- Power-Up Sequencing: The device can handle any power supply sequencing without damage, as long as VCCA ≤ VCCB.
Applications
The TXB0101 is suitable for level-translation applications where devices or systems operate at different voltage levels. It is particularly useful in scenarios such as:
- Interfacing Different Voltage Domains: Translating logic signals between systems with different supply voltages.
- Embedded Systems: Ensuring compatibility between various components in embedded systems.
- Industrial Automation: Facilitating communication between devices with different voltage requirements.
Q & A
- What is the primary function of the TXB0101DBVR?
The primary function is to perform bidirectional level-shifting and voltage translation between two different voltage domains. - What are the input voltage ranges for the A and B ports?
The A port accepts voltages from 1.2 V to 3.6 V, and the B port accepts voltages from 1.65 V to 5.5 V. - What is the maximum data rate supported by the TXB0101DBVR?
The device supports data rates up to 100 Mbps. - How does the OE input affect the device?
Setting the OE input low disables the device, placing all I/Os in a high-impedance state. Setting it high enables the device. - What is the recommended value for external pullup or pulldown resistors?
The recommended value is larger than 50 kΩ to avoid contention with the device's output drivers. - Can the TXB0101DBVR be used for open-drain signal translation?
No, it is designed for push-pull CMOS logic outputs. For open-drain signal translation, use the TI TXS010X series. - What is the operating temperature range of the TXB0101DBVR?
The device operates within a temperature range of -40°C to 85°C. - What package type is the TXB0101DBVR available in?
The device is available in the SOT-23-6 package. - How does the device handle power-up sequencing?
The device can handle any power supply sequencing without damage as long as VCCA ≤ VCCB. - What is the typical output impedance of the TXB0101DBVR?
The typical output impedance ranges from 40 Ω to 70 Ω depending on the output voltage.
