MC74VHCT126AMG

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gate Buffer/Driver
• Characteristics: High-Speed, Low-Power, TTL-Compatible
• Package: SOIC-14
• Essence: Quad Bus Buffer with 3-State Outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 2.0V to 5.5V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature: -40°C to +85°C
• Propagation Delay: 4.5ns (typical)
• Output Current: ±8mA
• Input Capacitance: 3pF (typical)

Pin Configuration

The MC74VHCT126AMG has a total of 14 pins arranged as follows:

__ __ 1 |1 \__/ 14| VCC 2 |2 13| A 3 |3 12| B 4 |4 11| C 5 |5 MC 10| D 6 |6 74 9| OE 7 |7 VH 8| GND |CT|

Functional Features

• Quad 3-State Buffer with Independent Control
• High-Speed Operation
• Low Power Consumption
• TTL-Compatible Inputs and Outputs
• Output Enable (OE) for Tristate Control

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer. - Low power consumption helps in reducing energy usage. - TTL compatibility ensures easy integration with existing systems. - Output enable feature provides flexibility in controlling the output state.

Disadvantages: - Limited output current may restrict its use in certain applications. - Input capacitance can affect signal integrity in high-frequency circuits.

Working Principles

The MC74VHCT126AMG is a quad bus buffer that amplifies and drives signals. It operates on a supply voltage ranging from 2.0V to 5.5V, making it suitable for various digital logic applications. The inputs and outputs are TTL-compatible, allowing seamless integration with other TTL devices.

The device features an output enable (OE) pin, which controls the tristate outputs. When OE is low, the outputs are enabled and actively driven by the input signals. Conversely, when OE is high, the outputs are in a high-impedance state, effectively disconnecting them from the rest of the circuit.

Detailed Application Field Plans

The MC74VHCT126AMG finds applications in various fields, including:

1. Digital Communication Systems: Used as a buffer to amplify and drive signals between different components in communication systems.
2. Microcontroller Interfacing: Enables bidirectional communication between microcontrollers and peripheral devices.
3. Data Acquisition Systems: Provides buffering capabilities for analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
4. Memory Address Decoding: Facilitates address decoding in memory subsystems, enabling efficient data retrieval and storage.

Detailed and Complete Alternative Models

1. SN74LVC126A: Similar quad bus buffer with 3-state outputs, but operates at a lower voltage range of 1.65V to 3.6V.
2. CD74HC126E: Quad buffer with 3-state outputs, compatible with CMOS logic levels, and operates at a wider voltage range of 2V to 6V.
3. 74ACT126: Quad buffer with 3-state outputs, designed for high-speed operation and compatible with TTL logic levels.

These alternative models offer similar functionality to the MC74VHCT126AMG but may have different voltage ranges, speed characteristics, or compatibility with other logic families.

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