SN74HCT138PWR

Product Overview

Category

SN74HCT138PWR belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital electronics for decoding applications.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Schmitt-trigger inputs for noise immunity
• Output drive capability: 10 LSTTL loads
• Balanced propagation delays

Package

SN74HCT138PWR is available in a small-outline integrated circuit (SOIC) package.

Essence

The essence of SN74HCT138PWR lies in its ability to decode binary-coded inputs into one of eight mutually exclusive outputs.

Packaging/Quantity

This product is typically packaged in reels and comes in quantities of 2500 units per reel.

Specifications

• Supply voltage: 2V to 6V
• Input voltage: 0V to VCC
• Output voltage: 0V to VCC
• Operating temperature range: -40°C to +85°C
• Maximum input current: ±1µA
• Maximum output current: ±25mA

Detailed Pin Configuration

SN74HCT138PWR consists of 16 pins, each serving a specific function:

1. GND: Ground reference voltage
2. A0: Binary input line A0
3. A1: Binary input line A1
4. A2: Binary input line A2
5. /G1: Active low enable input
6. Y0: Output line Y0
7. Y1: Output line Y1
8. Y2: Output line Y2
9. Y3: Output line Y3
10. Y4: Output line Y4
11. Y5: Output line Y5
12. Y6: Output line Y6
13. Y7: Output line Y7
14. VCC: Positive supply voltage
15. /G2A: Active low enable input for group A outputs
16. /G2B: Active low enable input for group B outputs

Functional Features

SN74HCT138PWR offers the following functional features:

• Decodes 3-bit binary inputs into 8 mutually exclusive outputs
• Enables easy selection of one output from eight possible combinations
• Provides active low enable inputs for flexible control

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient decoding in time-critical applications
• Low power consumption helps conserve energy
• Wide operating voltage range ensures compatibility with various systems
• Schmitt-trigger inputs provide noise immunity, enhancing reliability
• Balanced propagation delays ensure accurate decoding

Disadvantages

• Limited to 3-bit binary decoding, may not be suitable for more complex applications
• Requires external components for proper functionality

Working Principles

SN74HCT138PWR operates based on the principles of digital logic. It uses a combination of input signals to select one of the eight output lines. The active low enable inputs (/G1, /G2A, /G2B) control the output groups, allowing for flexible decoding.

Detailed Application Field Plans

SN74HCT138PWR finds applications in various fields, including: - Address decoding in microcontrollers and microprocessors - Memory selection in digital systems - Data multiplexing and demultiplexing - Signal routing and selection in communication systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to SN74HCT138PWR include: - 74HC138 - CD74HCT138E - MC74HCT138AN - DM74HCT138N

These alternatives can be considered based on specific requirements and availability.

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