The part number "TXS0108ERGYR" refers to a specific IC manufactured by Texas Instruments. This IC is part of the TXS series, which is designed for voltage-level translation applications. It's used for converting different logic levels between systems that have different voltage levels (e.g., 1.8V, 3.3V, or 5V).
Part Overview
Manufacturer: Texas Instruments Family: TXS Series (TXS0108) Part Number: TXS0108ERGYR Type: Voltage level translator (8-channel, bidirectional) Packaging Type: VQFN (Very thin quad flat package)Pin Function Specifications and Circuit Principles
Package and Pin Count Package: VQFN-20 Pin Count: 20 PinsThe VQFN package is a flat, surface-mount type of package, with leads on all four sides. This package is often used for its low profile and smaller form factor, while still maintaining ease of handling and solderability.
Pin Functions (Detailed)The TXS0108ERGYR has 20 pins in total. Below is a detailed function description of each pin:
Pin No. Pin Name Pin Function Description 1 A1 Logic level A-side input or output, for voltage translation. 2 A2 Logic level A-side input or output, for voltage translation. 3 A3 Logic level A-side input or output, for voltage translation. 4 A4 Logic level A-side input or output, for voltage translation. 5 A5 Logic level A-side input or output, for voltage translation. 6 A6 Logic level A-side input or output, for voltage translation. 7 A7 Logic level A-side input or output, for voltage translation. 8 A8 Logic level A-side input or output, for voltage translation. 9 B1 Logic level B-side input or output, for voltage translation (corresponding to A1). 10 B2 Logic level B-side input or output, for voltage translation (corresponding to A2). 11 B3 Logic level B-side input or output, for voltage translation (corresponding to A3). 12 B4 Logic level B-side input or output, for voltage translation (corresponding to A4). 13 B5 Logic level B-side input or output, for voltage translation (corresponding to A5). 14 B6 Logic level B-side input or output, for voltage translation (corresponding to A6). 15 B7 Logic level B-side input or output, for voltage translation (corresponding to A7). 16 B8 Logic level B-side input or output, for voltage translation (corresponding to A8). 17 VCCA Supply voltage for the A-side logic (e.g., 3.3V or 5V). 18 VCCB Supply voltage for the B-side logic (e.g., 1.8V or 3.3V). 19 OE Output Enable control pin. When high, the outputs are disabled. When low, the IC operates normally. 20 GND Ground pin for the IC.Circuit Principle
This IC is designed for bidirectional voltage-level translation. The main principle behind its operation is to allow communication between devices with different voltage levels (such as a 3.3V microcontroller communicating with a 1.8V sensor). It can shift voltage levels both from A to B (A-side to B-side) and B to A (B-side to A-side), making it highly versatile.
20 Frequently Asked Questions (FAQs)
What is the function of the TXS0108ERGYR? The TXS0108ERGYR is a voltage-level translator that allows bidirectional communication between devices with different voltage levels. How many pins does the TXS0108ERGYR have? The TXS0108ERGYR has 20 pins. What is the VQFN-20 package type? The VQFN-20 package is a flat, surface-mount package with 20 pins, often used for its compact size and low profile. Can the TXS0108ERGYR handle 5V logic? Yes, the TXS0108ERGYR can handle 5V logic on the A-side, and it can interface with 1.8V or 3.3V logic on the B-side. What is the maximum voltage for the VCCA and VCCB pins? The VCCA and VCCB pins can support up to 5.5V. What happens if the OE (Output Enable) pin is high? When the OE pin is high, the outputs are disabled, effectively putting the IC in a high-impedance state. How does the TXS0108ERGYR perform voltage translation? It uses MOSFET-based circuitry to translate the voltage levels, allowing both sides (A and B) to communicate without damage. Is the TXS0108ERGYR suitable for high-speed applications? Yes, the TXS0108ERGYR is designed for high-speed applications and supports data rates up to 50 Mbps. What is the recommended operating temperature for the TXS0108ERGYR? The recommended operating temperature range is from -40°C to +125°C.What does the GND pin do?
The GND pin is the ground pin for the IC, providing the reference voltage for both A-side and B-side operations.Can the TXS0108ERGYR be used with open-drain or open-collector outputs?
Yes, the TXS0108ERGYR can be used with open-drain or open-collector outputs, as it is designed to support bidirectional signals.What is the significance of the A1 to A8 pins?
The A1 to A8 pins are used for the A-side voltage input or output, depending on the direction of translation.What is the significance of the B1 to B8 pins?
The B1 to B8 pins are used for the B-side voltage input or output, corresponding to the A-side pins.How does the TXS0108ERGYR support bidirectional translation?
The IC uses bidirectional MOSFETs to allow both sides (A and B) to communicate in either direction, depending on the data flow.What should be connected to the VCCA and VCCB pins?
VCCA should be connected to the voltage supply for the A-side (e.g., 3.3V or 5V), and VCCB should be connected to the voltage supply for the B-side (e.g., 1.8V or 3.3V).What is the input/output voltage range for the TXS0108ERGYR?
The input/output voltage range is 1.8V to 5.5V for both A-side and B-side.How can the TXS0108ERGYR help in interfacing with different logic families?
The TXS0108ERGYR enables safe communication between different logic families (e.g., CMOS, TTL) by translating voltage levels.Does the TXS0108ERGYR require external pull-up resistors?
In most cases, the TXS0108ERGYR does not require external pull-up resistors, as it handles bidirectional operation internally.Can the TXS0108ERGYR be used for I2C communication?
Yes, the TXS0108ERGYR is commonly used for I2C voltage-level translation between devices with different operating voltages.What are the key advantages of the TXS0108ERGYR?
The TXS0108ERGYR offers bidirectional voltage translation, high-speed operation, support for various voltage levels, and minimal external components, making it ideal for level-shifting applications.This detailed explanation covers the primary functions, pinout, circuit principles, and common FAQs related to the TXS0108ERGYR.