Encyclopedia Entry: 74HCT126DB,118

Product Overview

Category

The 74HCT126DB,118 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used as a quad buffer/line driver with 3-state outputs.

Characteristics

• High-speed CMOS technology
• Wide operating voltage range: 2 V to 6 V
• 3-state outputs for bus-oriented applications
• Schmitt-trigger action on all inputs
• Balanced propagation delays
• Low power consumption
• Direct interface with TTL levels
• Multiple package options available

Package and Quantity

The 74HCT126DB,118 is typically packaged in a plastic SO-14 package. It is available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Supply voltage: 2 V to 6 V
• Input voltage: -0.5 V to VCC + 0.5 V
• Output voltage: -0.5 V to VCC + 0.5 V
• Operating temperature range: -40°C to +125°C
• Maximum input current: ±1 mA
• Maximum output current: ±6 mA
• Propagation delay: 11 ns (typical)

Pin Configuration

The 74HCT126DB,118 has a total of 14 pins, which are assigned specific functions as follows:

1. 1A - Input 1 for buffer A
2. 1Y - Output 1 for buffer A
3. GND - Ground
4. 2Y - Output 2 for buffer B
5. 2A - Input 2 for buffer B
6. 3A - Input 3 for buffer C
7. 3Y - Output 3 for buffer C
8. VCC - Positive supply voltage
9. 4Y - Output 4 for buffer D
10. 4A - Input 4 for buffer D
11. OE - Output enable input (active low)
12. NC - No connection
13. NC - No connection
14. GND - Ground

Functional Features

The 74HCT126DB,118 is designed to provide buffering and line driving capabilities for digital signals. It features 3-state outputs, allowing multiple devices to share a common bus without interference. The Schmitt-trigger action on all inputs ensures reliable signal reception even in the presence of noise.

Advantages and Disadvantages

Advantages

• High-speed operation
• Wide operating voltage range
• Low power consumption
• Direct compatibility with TTL levels
• Balanced propagation delays for improved signal integrity

Disadvantages

• Limited output current capability
• Requires external pull-up resistors for proper operation in some applications

Working Principles

The 74HCT126DB,118 operates based on high-speed CMOS technology. It utilizes a combination of transistors and logic gates to buffer and drive digital signals. The 3-state outputs allow the IC to be effectively connected to a shared bus, enabling efficient data transfer between multiple devices.

Application Field Plans

The 74HCT126DB,118 finds application in various fields, including: 1. Microcontroller-based systems 2. Data communication networks 3. Industrial automation 4. Automotive electronics 5. Consumer electronics

Alternative Models

Alternative models that can be considered as replacements or substitutes for the 74HCT126DB,118 include: - SN74HCT126N - MC74HCT126AN - CD74HCT126E - 74HC126D

These alternative models offer similar functionality and characteristics, providing flexibility in design choices.

In conclusion, the 74HCT126DB,118 is a versatile integrated circuit that serves as a quad buffer/line driver with 3-state outputs. Its high-speed operation, wide voltage range, and compatibility with TTL levels make it suitable for various applications in different fields.