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Encyclopedia Entry: 74AC11257PWE4
Product Information Overview
- Category: Integrated Circuit (IC)
- Use: Logic Level Translator
- Characteristics: High-speed, low-power consumption
- Package: TSSOP-24
- Essence: Translates logic levels between different voltage domains
- Packaging/Quantity: Available in reels of 2500 units
Specifications
- Logic Family: 74AC
- Number of Channels: 4
- Input Voltage Range: 2V to 6V
- Output Voltage Range: 2V to 6V
- Propagation Delay: 5.5 ns (typical)
- Operating Temperature Range: -40°C to +85°C
Detailed Pin Configuration
The 74AC11257PWE4 IC has a TSSOP-24 package with the following pin configuration:
+---+--+---+
A1 |1 24| VCC
B1 |2 23| B4
A2 |3 22| A4
B2 |4 21| OE#
A3 |5 20| Y4
B3 |6 19| GND
Y1 |7 18| A4
GND|8 17| B4
Y2 |9 16| A3
OE#|10 15| B3
Y3 |11 14| A2
B1 |12 13| B2
+--------+
Functional Features
- Translates logic levels between different voltage domains.
- Supports bidirectional translation.
- Provides non-inverting outputs.
- Enables/disables output using the OE# (Output Enable) pin.
Advantages and Disadvantages
Advantages: - High-speed operation allows for efficient data transfer. - Low-power consumption minimizes energy usage. - Bidirectional translation simplifies circuit design.
Disadvantages: - Limited voltage range (2V to 6V) may not be suitable for all applications. - Propagation delay of 5.5 ns may introduce timing issues in certain scenarios.
Working Principles
The 74AC11257PWE4 is a logic level translator IC that operates by converting input logic levels from one voltage domain to another. It utilizes a combination of MOSFETs and CMOS technology to achieve bidirectional translation with non-inverting outputs. The OE# pin controls the enable/disable functionality of the output, allowing for flexible data transfer.
Detailed Application Field Plans
The 74AC11257PWE4 is commonly used in various applications where logic level translation is required. Some typical application fields include:
- Microcontroller interfacing with different voltage peripherals.
- Communication systems involving multiple voltage domains.
- Sensor networks requiring voltage level compatibility.
- Industrial automation and control systems.
- Consumer electronics devices with mixed voltage interfaces.
Detailed and Complete Alternative Models
- 74ACT11257PWE4
- 74HC11257PWE4
- 74HCT11257PWE4
- 74LCX11257PWE4
These alternative models offer similar functionality and can be considered as substitutes for the 74AC11257PWE4, depending on specific requirements and compatibility with the target application.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 74AC11257PWE4 en soluciones técnicas
Sure! Here are 10 common questions and answers related to the application of 74AC11257PWE4 in technical solutions:
Q: What is the 74AC11257PWE4? A: The 74AC11257PWE4 is a quad 2-input multiplexer with 3-state outputs, commonly used in digital logic circuits.
Q: What is the purpose of a multiplexer? A: A multiplexer is used to select one of several input signals and route it to a single output line.
Q: How many inputs does the 74AC11257PWE4 have? A: The 74AC11257PWE4 has four inputs, labeled A0, A1, A2, and A3.
Q: Can I use the 74AC11257PWE4 as a demultiplexer? A: No, the 74AC11257PWE4 is specifically designed as a multiplexer and cannot be used as a demultiplexer.
Q: What is the maximum voltage that the 74AC11257PWE4 can handle? A: The 74AC11257PWE4 can handle a maximum voltage of 5.5V.
Q: How many output lines does the 74AC11257PWE4 have? A: The 74AC11257PWE4 has three output lines, labeled Y0, Y1, and Y2.
Q: Can I connect multiple 74AC11257PWE4 chips together to increase the number of inputs? A: Yes, you can cascade multiple 74AC11257PWE4 chips to increase the number of inputs.
Q: What is the power supply voltage range for the 74AC11257PWE4? A: The power supply voltage range for the 74AC11257PWE4 is typically between 2V and 5.5V.
Q: Can I use the 74AC11257PWE4 in high-speed applications? A: Yes, the 74AC11257PWE4 is designed for high-speed operation and can be used in such applications.
Q: Are there any specific precautions to take when using the 74AC11257PWE4? A: It is important to follow the recommended operating conditions and ensure proper decoupling capacitors are used to minimize noise and voltage spikes.
Please note that these answers are general and may vary depending on the specific application and requirements.