TXB0104PWR Alternatives, Package, Specifications and Applications
19 January 2024
Ⅱ. Operating principle of TXB0104PWR
Ⅳ. Specifications of TXB0104PWR
Ⅵ. What are the applications of TXB0104PWR?
Ⅶ. How does TXB0104PWR realize automatic voltage regulation?
A level converter is used to convert the level of a signal from one logic or voltage level to another. It achieves signal compatibility and interconnection between different circuits, allowing devices of different levels to communicate and interact with each other. The TXB0104PWR is a four-channel bidirectional level translator manufactured by Texas Instruments. In this article, we will introduce in detail its working principle and usage scenarios.
The TXB0104PWR represents a sophisticated 4-bit non-inverting voltage-level translation converter, featuring two independently configurable power rails. Classified within the Translation - Voltage Levels category, this electronic component is encapsulated in a TSSOP-14 package and employs a surface mount installation methodology. To guarantee optimal performance, the device is designed to operate within a temperature range of -40°C to 85°C. The supply voltage parameters for the TXB0104PWR range from 1.2 V to 3.6 V. With a data rate of 100 Mb/s, the converter boasts a minimal propagation delay time of 7.4 ns, underscoring its efficiency and responsiveness in diverse applications.
Alternatives and equivalents:
The TXB0104PWR operates on the principle of bi-directional voltage conversion by utilizing two independent configurable power rails, port A and port B. Port A is used to track VCCA with a supply voltage range of 1.2 to 3.6 V. Port B is used to track VCCB with a supply voltage range of 1.65 to 5.5 V. By configuring the voltages of the two power rails, it allows for different switching between voltage domains.
When it is necessary to convert from a high voltage domain to a low voltage domain, for example, from 5V to 3.3V, the TXB0104PWR can accomplish this by configuring the voltages of ports A and B. The TXB0104PWR can also be used to convert from a high voltage domain to a low voltage domain, for example, from 5V to 3.3V. Specifically, we set port A to 5V and port B to 3.3V so that the voltage of the output port is reduced to 3.3 V. And when it is necessary to convert from a low voltage domain to a high voltage domain, for example, from 3.3V to 5V, it can likewise achieve this by configuring the voltages of ports A and B. The TXB0104PWR can do this by configuring the voltages of ports A and B. To do so, we set port A to 3.3V and port B to 5V so that the voltage of the output port will be raised to 5V. Note that the voltage of VCCA must be lower than or equal to the voltage of VCCB. Additionally, when the Output Enable (OE) input is low, all outputs are in a high-impedance state.
The TXB0104PWR has a length of 5 mm, a width of 4.4 mm, and a height of 1.15 mm. It comes in TSSOP-14 package and tape and reel packaging. The TSSOP package occupies less PCB board space, making the circuit board more compact and conducive to the design of miniaturized and portable devices. In addition, the TSSOP-14 package also has good thermal performance. Due to its smaller size and tight pin spacing, the heat generated by the chip within the TSSOP package can be dissipated faster, which helps keep the chip temperature stable and improves its reliability.
• Part Status: Active
• Manufacturer: Texas Instruments
• Package / Case: TSSOP-14
• Packaging: Tape and Reel
• Data Rate: 100 Mb/s
• Process Technology: CMOS
• Supply Voltage: 1.2 V ~ 3.6V
• Operating Temperature: -40°C ~ 85°C
• Propagation Delay Time: 7.4 ns
• High Level Output Current: 50 mA
• Pin Count: 14
• Mounting Style: SMD/SMT
• Number of Channels: 4
• Product Category: Translation - Voltage Levels
Selecting the TXB0104PWR model number is a critical step in circuit design. We need to carefully consider the input and output voltage range, current capacity and other parameters of the power supply according to the actual application requirements, and ensure that the selected model can meet the design requirements. Next, we connect the TXB0104PWR with external components in a reasonable way.
In the programming and debugging stage, we program the TXB0104PWR using an appropriate programming language and debug it to ensure that it can realize power management, voltage conversion and other functions. During this process, we need to familiarize ourselves with the technical specifications and related information of TXB0104PWR to avoid wrong operation methods.
In terms of PCB layout, we need to pay special attention to the connection between the TXB0104PWR's pins and external components. A reasonable layout can ensure the correct direction of the signal and the reasonable distribution of the power lines, thus improving the stability and reliability of the circuit. At the same time, we also need to consider factors such as signal interference and power supply noise to avoid their impact on circuit performance.
The TXB0104PWR device can be used in level-translation applications for interfacing devices or systems operating at different interface voltages with one another. It can only translate push-pull CMOS logic outputs. lf for open-drain signal translation, please refer to TI TXS010X products. Any external pulldown or pullup resistors are recommended larger than 50 kΩ.
Typical applications of the TXB0104PWR are shown below:
The automatic voltage regulation feature of the TXB0104PWR is achieved by incorporating a feedback loop within the chip. This involves connecting the FB (feedback) pin of the TXB0104PWR to a voltage detection circuit. The voltage detection circuit oversees the output voltage, compares it to the predetermined target voltage, and transmits the voltage error signal to the internal comparator. The comparator then modifies the output driver based on the error signal, resulting in an adjustment to the output voltage. This entire process is self-regulating and does not necessitate any external intervention.
By adjusting the gain and bandwidth of the feedback loop, it can control the response speed and accuracy of automatic voltage regulation. In addition, it can set different voltage regulation modes to meet the needs of different application scenarios. In this process, we need to ensure the accuracy and stability of the voltage detection circuit, as well as the stability of the loop and noise suppression, etc., in order to obtain accurate automatic voltage regulation.
Frequently Asked Questions
1. How many channels does the TXB0104PWR have?
The TXB0104PWR has four channels, allowing it to translate signals for up to four different I/O lines.
2. What is the replacement and equivalent of TXB0104PWR?
You can replace the TXB0104PWR with ADG3304BRUZ, TXB0104PWRG4 or TXB0104QPWRQ1.
3. Is the TXB0104PWR suitable for bi-directional level shifting?
Yes, the TXB0104PWR is bidirectional and can translate signals from lower to higher voltage and vice versa.
4. What is a voltage level translator?
A voltage-level translator can help resolve I/O level mismatches between lower-power processors in ADAS domain controllers and peripheral devices for interfaces such as I2C, Serial Peripheral Interface, Reduced Gigabit Media-Independent Interface, SMBus, I2S, and general-purpose input/output.
