Overview
The TXS0102DCUT, produced by Texas Instruments, is a 2-bit bidirectional voltage-level translator designed to bridge the digital-switching compatibility gap between two voltage nodes. This device is part of TI's 'Switch' type voltage translator family and is specifically engineered for translating logic voltage levels without the need for a direction-control signal. The A port can accept I/O voltages ranging from 1.65 V to 3.6 V, while the B port can accept I/O voltages from 2.3 V to 5.5 V. The device employs a pass-gate architecture with edge-rate accelerators (one-shots) to enhance the overall data rate, making it suitable for both open-drain and push-pull CMOS logic outputs.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Input Voltage Range (A Port) | 1.65 V to 3.6 V | 1.65 V to 3.6 V |
| Input Voltage Range (B Port) | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Maximum Data Rates | Push-Pull: 24 Mbps, Open-Drain: 2 Mbps | 24 Mbps (Push-Pull), 2 Mbps (Open-Drain) |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C |
| Package Type | VSSOP (8 pins) | VSSOP (8 pins) |
| Body Size | 2.30 mm × 2.00 mm | 2.30 mm × 2.00 mm |
| Internal Pull-Up Resistors | 10 kΩ on each I/O | 10 kΩ on each I/O |
| Enable/Disable Input (OE) | Low: High-impedance state, High: Enable device | Low: High-impedance state, High: Enable device |
Key Features
- No direction-control signal needed for data flow.
- Auto-direction-sensing based translator.
- Edge-rate accelerators (one-shots) to improve data rates.
- Integrated 10 kΩ pull-up resistors for open-drain applications.
- Supports both open-drain and push-pull CMOS logic outputs.
- Output-enable (OE) input to disable the device and place all I/Os in a high-impedance state.
- Low power consumption with high-impedance state during power up or power down.
Applications
The TXS0102DCUT is primarily used for interfacing devices or systems operating at different interface voltages. It is particularly suitable for applications involving open-drain drivers such as I2C or 1-wire interfaces, where bidirectional data flow without a control signal is necessary. Additionally, it can be used in push-pull driver applications, although the TXB0102 might be a better option for such scenarios.
- Interfacing between different voltage nodes in electronic systems.
- Open-drain applications like I2C or 1-wire interfaces.
- Push-pull driver applications where bidirectional translation is required.
Q & A
- What is the primary function of the TXS0102DCUT?
The primary function is to translate logic voltage levels between two different voltage nodes without the need for a direction-control signal.
- What are the input voltage ranges for the A and B ports?
The A port accepts I/O voltages from 1.65 V to 3.6 V, and the B port accepts I/O voltages from 2.3 V to 5.5 V.
- What are the maximum data rates supported by the TXS0102DCUT?
The device supports up to 24 Mbps for push-pull configurations and up to 2 Mbps for open-drain configurations.
- What type of package is the TXS0102DCUT available in?
The TXS0102DCUT is available in a VSSOP (8 pins) package.
- How does the device handle edge-rate acceleration?
The device uses one-shot (O.S.) edge-rate accelerator circuitry to detect and accelerate rising edges, improving the output slew rate and maintaining high data rates.
- What is the purpose of the internal 10 kΩ pull-up resistors?
The internal 10 kΩ pull-up resistors are used for open-drain applications, eliminating the need for external resistors.
- How do you disable the device?
The device can be disabled by setting the OE input low, which places all I/Os in a high-impedance state.
- What are the recommendations for PCB layout practices?
Texas Instruments recommends using short PCB trace lengths to avoid excessive capacitive loading and ensure proper one-shot triggering.
- Can the TXS0102DCUT be used in push-pull driver applications?
Yes, it can be used in push-pull driver applications, although the TXB0102 might be a better option for such scenarios.
- How does the device manage power consumption during power up or power down?
The device reduces power consumption by placing all I/Os in a high-impedance state when the OE input is low during power up or power down.
