Encyclopedia Entry: 74AC11008D

Product Overview

Category

The 74AC11008D belongs to the category of integrated circuits (ICs) and specifically falls under the family of digital logic gates.

Use

This IC is primarily used for performing logical AND operations on multiple input signals. It is commonly employed in various digital systems and electronic devices where logical operations are required.

Characteristics

• The 74AC11008D is a quad 2-input positive-AND gate.
• It operates on a supply voltage range of 2V to 6V, making it compatible with both TTL and CMOS logic levels.
• The IC offers high-speed operation and low power consumption.
• It features Schmitt-trigger inputs, which provide hysteresis and improve noise immunity.
• The device exhibits excellent input/output characteristics, ensuring reliable signal propagation.

Package and Quantity

The 74AC11008D is available in different package options, such as SOIC (Small Outline Integrated Circuit) and TSSOP (Thin Shrink Small Outline Package). The quantity per package varies depending on the manufacturer and distributor.

Specifications

• Logic Family: AC
• Number of Inputs: 2 per gate (quad package contains 8 inputs)
• Supply Voltage Range: 2V to 6V
• Propagation Delay: Typically 5 ns
• Operating Temperature Range: -40°C to +85°C
• Output Current: ±24 mA

Pin Configuration

The pin configuration of the 74AC11008D is as follows:

+---+--+---+ A1 -|1 +--+ 14|- VCC B1 -|2 13|- B4 Y1 -|3 12|- A4 A2 -|4 74AC11008D 11|- Y4 B2 -|5 10|- B3 Y2 -|6 9|- A3 GND -|7 8|- Y3 +-----------+

Functional Features

• The 74AC11008D performs logical AND operations on two input signals, A and B, for each gate.
• It provides four independent AND gates in a single package, allowing simultaneous processing of multiple inputs.
• The Schmitt-trigger inputs ensure reliable and noise-immune operation.
• The IC offers high-speed performance, making it suitable for applications requiring quick logical operations.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient processing of logical AND operations.
• Low power consumption makes it suitable for battery-powered devices.
• Schmitt-trigger inputs enhance noise immunity and signal integrity.
• Compact package options provide flexibility in design and integration.

Disadvantages

• Limited to performing only logical AND operations, restricting its functionality to specific applications.
• Requires careful consideration of voltage compatibility due to the narrow supply voltage range.

Working Principles

The 74AC11008D operates based on the principles of digital logic. Each gate within the IC receives two input signals (A and B) and produces an output signal (Y) based on the logical AND operation. The Schmitt-trigger inputs ensure that the input signals are properly interpreted, providing noise immunity and stable operation.

Application Field Plans

The 74AC11008D finds application in various fields where logical AND operations are required. Some potential areas of use include: 1. Digital circuit design 2. Microcontroller-based systems 3. Communication systems 4. Industrial automation 5. Robotics

Alternative Models

Several alternative models can be considered as replacements or alternatives to the 74AC11008D. These include: - 74HC08: A similar quad 2-input AND gate with a wider supply voltage range. - CD4081: A quad 2-input AND gate from the CMOS logic family. - SN74LS08: A quad 2-input AND gate compatible with TTL logic levels.

These alternative models offer similar functionality and can be chosen based on specific design requirements and compatibility considerations.

In conclusion, the 74AC11008D is a versatile integrated circuit that provides four independent logical AND gates in a single package. Its high-speed operation, low power consumption, and noise immunity make it suitable for various digital systems and electronic devices requiring logical operations.

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