Encyclopedia Entry: 74AC11138NSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Decoder/Demultiplexer
• Characteristics: High-speed, low-power consumption
• Package: NSR (Small Outline Package)
• Essence: Decodes binary input signals into multiple output lines
• Packaging/Quantity: Available in reels or tubes, quantity varies based on supplier

Specifications

• Logic Family: 74AC
• Number of Inputs: 3
• Number of Outputs: 8
• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 5 ns (typical)
• Output Current: ±24 mA

Detailed Pin Configuration

The 74AC11138NSR IC has a total of 16 pins. The pin configuration is as follows:

┌───┐ A1 ─┤1 16├─ VCC A2 ─┤2 15├─ Y0 A3 ─┤3 14├─ Y1 GND ─┤4 13├─ Y2 E1 ─┤5 12├─ Y3 E2 ─┤6 11├─ Y4 Y7 ─┤7 10├─ Y5 Y6 ─┤8 9├─ Y6 └───┘

Functional Features

• Decodes three binary inputs (A1, A2, A3) into eight output lines (Y0-Y7)
• Enables selection of one output line based on the input combination
• High-speed operation allows for quick decoding of input signals
• Low-power consumption makes it suitable for battery-powered devices

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient signal decoding - Low-power consumption prolongs battery life in portable devices - Compact NSR package saves board space

Disadvantages: - Limited number of inputs and outputs restricts its application in complex systems - Propagation delay may affect real-time applications with strict timing requirements

Working Principles

The 74AC11138NSR is a logic decoder/demultiplexer IC that decodes three binary inputs (A1, A2, A3) into eight output lines (Y0-Y7). The input combination determines which output line is selected. When the enable pins (E1, E2) are active, the IC decodes the inputs and activates the corresponding output line. The high-speed operation and low-power consumption make it suitable for various digital applications.

Detailed Application Field Plans

The 74AC11138NSR finds applications in various fields, including: 1. Digital communication systems 2. Data multiplexing and demultiplexing 3. Address decoding in memory systems 4. Control circuitry in microprocessors 5. Industrial automation and control systems

Detailed Alternative Models

1. 74HC138: Similar functionality but operates at a higher voltage range (2V to 6V)
2. CD74AC138: Equivalent IC from a different manufacturer, compatible pin configuration
3. SN74LS138: Lower power version with slower speed, suitable for less demanding applications

Note: This is not an exhaustive list; there are several alternative models available in the market.

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