SN74AHC138PWR

Product Overview

Category

SN74AHC138PWR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used as a 3-to-8 line decoder/demultiplexer.

Characteristics

• Low power consumption
• High-speed operation
• Wide operating voltage range
• Schmitt-trigger inputs for noise immunity
• Balanced propagation delays
• Multiple package options available

Package

SN74AHC138PWR is packaged in a small-outline, thin shrink small-outline package (TSSOP).

Essence

The essence of SN74AHC138PWR lies in its ability to decode a three-bit binary input into eight mutually exclusive outputs.

Packaging/Quantity

SN74AHC138PWR is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 10 ns
• Maximum Quiescent Current: 4 μA

Detailed Pin Configuration

SN74AHC138PWR has a total of 16 pins. The pin configuration is as follows:

1. GND (Ground)
2. A0 (Input A0)
3. A1 (Input A1)
4. A2 (Input A2)
5. /G1 (Enable Input)
6. Y0 (Output Y0)
7. Y1 (Output Y1)
8. Y2 (Output Y2)
9. Y3 (Output Y3)
10. Y4 (Output Y4)
11. Y5 (Output Y5)
12. Y6 (Output Y6)
13. Y7 (Output Y7)
14. VCC (Supply Voltage)
15. /G2A (Enable Input)
16. /G2B (Enable Input)

Functional Features

SN74AHC138PWR offers the following functional features:

• Decodes a three-bit binary input into eight mutually exclusive outputs
• Enables cascading of multiple ICs for larger decoding applications
• Schmitt-trigger inputs provide noise immunity
• Balanced propagation delays ensure accurate output timing

Advantages and Disadvantages

Advantages

• Low power consumption makes it suitable for battery-powered devices
• High-speed operation allows for efficient data processing
• Wide operating voltage range provides flexibility in various applications
• Schmitt-trigger inputs enhance noise immunity

Disadvantages

• Limited to 3-to-8 line decoding, not suitable for other decoding configurations
• TSSOP package may require careful handling during assembly

Working Principles

SN74AHC138PWR works by accepting a three-bit binary input and decoding it into one of the eight output lines based on the input combination. The enable inputs (/G1, /G2A, /G2B) control the functioning of the decoder. When enabled, the selected output line becomes active, while all other output lines remain inactive.

Detailed Application Field Plans

SN74AHC138PWR finds applications in various fields, including:

1. Address decoding in microcontrollers and microprocessors
2. Memory selection in digital systems
3. Data routing in communication systems
4. Signal demultiplexing in multimedia devices
5. Control logic in industrial automation

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to SN74AHC138PWR include:

1. CD74HC138E - High-Speed CMOS Logic 3-to-8 Line Decoder/Demultiplexer
2. 74HC138N - 3-to-8 Line Decoder/Demultiplexer, Non-Inverting Outputs
3. MC74HC138AN - High-Speed CMOS Logic 3-to-8 Line Decoder/Demultiplexer

These alternative models can be considered based on specific requirements and availability.

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