SN74HCT125DT

Product Overview

Category

SN74HCT125DT belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used as a quad bus buffer gate with 3-state outputs.

Characteristics

• High-speed CMOS technology
• 3-state outputs for bus-oriented applications
• Wide operating voltage range: 2V to 6V
• Low power consumption
• Schmitt-trigger inputs for noise immunity
• Available in surface mount package

Package and Quantity

SN74HCT125DT is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 15 ns
• Maximum Quiescent Current: 4 µA

Pin Configuration

The SN74HCT125DT IC has a total of 14 pins, which are numbered as follows:

``` __ __ |1 \/ 14| |2 13| |3 12| |4 11| |5 10| |6 9| |7 8|

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Pin Description: 1. OE (Output Enable) 1 2. Y1 (Output) 1 3. A1 (Input) 1 4. GND (Ground) 5. A2 (Input) 2 6. Y2 (Output) 2 7. OE (Output Enable) 2 8. VCC (Supply Voltage) 9. Y3 (Output) 3 10. A3 (Input) 3 11. A4 (Input) 4 12. Y4 (Output) 4 13. OE (Output Enable) 4 14. GND (Ground)

Functional Features

• The SN74HCT125DT is a quad bus buffer gate with 3-state outputs.
• It provides buffering and signal amplification for bus-oriented applications.
• The 3-state outputs allow multiple devices to share the same bus without interference.
• Schmitt-trigger inputs ensure noise immunity and reliable operation in noisy environments.
• The high-speed CMOS technology enables fast data transmission.

Advantages and Disadvantages

Advantages: - Wide operating voltage range allows compatibility with various systems. - Low power consumption makes it suitable for battery-powered devices. - Schmitt-trigger inputs provide noise immunity, ensuring reliable operation. - 3-state outputs enable bus sharing without interference.

Disadvantages: - Maximum propagation delay of 15 ns may limit its use in high-speed applications. - Limited number of output pins restricts the number of devices that can be connected.

Working Principles

The SN74HCT125DT operates as a buffer gate, receiving input signals and providing amplified output signals. The 3-state outputs allow the device to be enabled or disabled, enabling multiple devices to share the same bus without interfering with each other. The Schmitt-trigger inputs ensure reliable operation by providing noise immunity and reducing the effects of signal noise.

Application Field Plans

The SN74HCT125DT is commonly used in various applications, including:

1. Microcontroller interfacing: It can be used to interface microcontrollers with external devices, such as sensors, actuators, and displays.
2. Data communication: It is suitable for buffering and amplifying signals in data communication systems, such as UART, SPI, and I2C.
3. Bus systems: The 3-state outputs make it ideal for bus-oriented applications, allowing multiple devices to share the same bus without interference.
4. Industrial automation: It can be used in industrial automation systems for signal conditioning and level shifting.

Alternative Models

1. SN74HCT125D: Similar to SN74HCT125DT but available in a different package (SOIC).
2. MC74HCT125N: Equivalent quad bus buffer gate with 3-state outputs from a different manufacturer (Motorola).

These alternative models provide similar functionality and can be used as replacements for SN74HCT125DT in various applications.

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