Overview
The TXB0302DQMR is a 2-bit bidirectional voltage-level translator produced by Texas Instruments. This device is designed to facilitate level translation between different voltage domains, making it an essential component in various electronic systems. It operates with fully symmetric supply voltages, allowing the A port and B port to be configured independently within the range of 0.9 V to 3.6 V. This flexibility enables seamless communication between devices operating at different voltage levels.
Key Specifications
| Parameter | Min | Max | Unit | Description |
|---|---|---|---|---|
| VCCA | 0.9 | 3.6 | V | A-port supply voltage |
| VCCB | 0.9 | 3.6 | V | B-port supply voltage |
| Operating Temperature Range | -40 | 85 | °C | Operating temperature range |
| tpd @ Nom Voltage (Max) | 16 | ns | Propagation delay time | |
| ICC @ Nom Voltage (Max) | 0.01 | mA | Quiescent current | |
| Max Drive | 50 | mA | Maximum drive current | |
| Package Type | X2SON (DQM) | Package type | ||
| Pins | 8 | Number of pins |
Key Features
- Fully Symmetric Supply Voltages: Both A and B ports can operate with supply voltages ranging from 0.9 V to 3.6 V, allowing for flexible voltage-level translation.
- VCC Isolation Feature: If either VCC input is at GND, all outputs are in the high-impedance state, ensuring safe operation.
- OE Input Circuit: The OE (output enable) input is referenced to VCCA, enabling or disabling the device by setting OE low or high.
- Low Power Consumption: The device has a maximum quiescent current of 5 µA, making it power-efficient.
- Partial-Power-Down Mode Operation: Supported through the Ioff feature.
- Latch-Up Performance: Exceeds 100 mA per JESD 78, Class II.
- ESD Protection: Exceeds JESD 22 standards, including 4000-V Human-Body Model and 1000-V Charged-Device Model.
Applications
The TXB0302DQMR is suitable for various level-translation applications, including:
- Interfacing devices or systems operating at different interface voltages.
- Embedded systems where voltage-level translation is necessary.
- Industrial control systems requiring communication between devices at different voltage levels.
- Consumer electronics where compatibility with multiple voltage domains is required.
Q & A
- What is the operating voltage range for the A and B ports of the TXB0302DQMR?
The A and B ports can operate with supply voltages ranging from 0.9 V to 3.6 V.
- What is the purpose of the OE input in the TXB0302DQMR?
The OE input is used to enable or disable the device by setting it low or high, placing all I/Os in the high-impedance state when low.
- What is the maximum propagation delay time for the TXB0302DQMR?
The maximum propagation delay time is 16 ns.
- What is the maximum drive current of the TXB0302DQMR?
The maximum drive current is 50 mA.
- What is the package type and number of pins for the TXB0302DQMR?
The package type is X2SON (DQM) with 8 pins.
- What is the operating temperature range for the TXB0302DQMR?
The operating temperature range is -40°C to 85°C.
- Does the TXB0302DQMR support partial-power-down mode operation?
Yes, it supports partial-power-down mode operation through the Ioff feature.
- What level of ESD protection does the TXB0302DQMR offer?
The device exceeds JESD 22 standards, including 4000-V Human-Body Model and 1000-V Charged-Device Model.
- Can the TXB0302DQMR be used in applications like I2C or 1-Wire?
No, it is not recommended for applications like I2C or 1-Wire where an open-drain driver is connected on the bidirectional data I/O. Instead, use a device from the TI TXS01xx series.
- What is the recommended drive strength for the device driving the data I/Os of the TXB0302DQMR?
The device driving the data I/Os must have a drive strength of at least ±3 mA.
