MC74HCT125ADR2G

Product Overview

• Category: Integrated Circuit
• Use: Logic Level Shifter
• Characteristics: High-Speed, CMOS Technology
• Package: SOIC-14
• Essence: Quad Bus Buffer Gate
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage: 2.0V to 6.0V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature: -55°C to +125°C
• Propagation Delay: 9 ns (typical)
• Output Current: ±4 mA

Detailed Pin Configuration

The MC74HCT125ADR2G has a total of 14 pins arranged as follows:

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

Functional Features

• Quad bus buffer gate with 3-state outputs
• Compatible with TTL levels
• High-speed operation
• Low power consumption
• Schmitt-trigger input for noise immunity
• Balanced propagation delays

Advantages and Disadvantages

Advantages

• Provides level shifting capability between different logic families
• Allows interfacing between devices operating at different voltage levels
• Offers high-speed operation suitable for time-critical applications
• Low power consumption helps in reducing overall system power requirements

Disadvantages

• Limited output current capacity may restrict its use in certain high-current applications
• Not suitable for voltage levels outside the specified range
• May require additional external components for specific applications

Working Principles

The MC74HCT125ADR2G is a quad bus buffer gate that operates as a level shifter. It takes input signals from one logic family and provides output signals compatible with another logic family. The device uses CMOS technology, which allows for high-speed operation and low power consumption.

The Schmitt-trigger inputs provide noise immunity, ensuring reliable signal transmission even in noisy environments. The balanced propagation delays ensure that all outputs switch simultaneously, minimizing any timing discrepancies.

Detailed Application Field Plans

The MC74HCT125ADR2G can be used in various applications, including:

1. Microcontroller interfacing: It enables communication between microcontrollers operating at different voltage levels.
2. Sensor interfaces: It facilitates the connection of sensors with different logic families to microcontrollers or other processing units.
3. Level shifting in communication systems: It allows for the translation of logic levels between different communication protocols, such as UART, SPI, or I2C.
4. Industrial automation: It can be used in control systems to interface between different logic devices used in industrial automation processes.

Detailed and Complete Alternative Models

1. SN74HCT125N: Similar quad bus buffer gate with 3-state outputs, available in DIP-14 package.
2. CD74HCT125E: Quad bus buffer gate with 3-state outputs, available in PDIP-14 package.
3. 74HC125D: Quad bus buffer gate with 3-state outputs, available in SOIC-14 package.

These alternative models offer similar functionality and can be used as replacements for the MC74HCT125ADR2G in various applications.

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