CD74HCT126MG4

Overview

• Category: Integrated Circuit
• Use: Logic Gate Buffer/Driver
• Characteristics: High-Speed, TTL-Compatible, Quad Bus Buffer
• Package: SOIC-14
• Essence: Buffering and driving signals in digital circuits
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• High-Level Input Voltage: 2V (min), 0.8V (max)
• Low-Level Input Voltage: 0.8V (min), 0.4V (max)
• High-Level Output Voltage: 4V (min), 3.4V (max)
• Low-Level Output Voltage: 0.1V (min), 0.1V (max)
• Maximum Operating Frequency: 25 MHz
• Propagation Delay Time: 9 ns (typical)

Pin Configuration

The CD74HCT126MG4 has a total of 14 pins arranged as follows:

+---+--+---+ OE --|1 +--+ 14|-- VCC A --|2 13|-- Y1 B --|3 12|-- Y2 Y --|4 11|-- Y3 GND --|5 10|-- Y4 C --|6 9|-- GND D --|7 8|-- OE# +----------+

Functional Features

• Quad 3-State Non-Inverting Buffers
• Outputs Can Drive Up to 10 LSTTL Loads
• Buffered Inputs Improve Noise Immunity
• High-Speed Operation
• TTL-Compatible Inputs and Outputs

Advantages

• High-Speed operation allows for efficient signal buffering in digital circuits.
• TTL-Compatible inputs and outputs ensure compatibility with existing systems.
• Buffered inputs improve noise immunity, reducing the risk of signal corruption.
• Can drive up to 10 LSTTL loads, providing flexibility in circuit design.

Disadvantages

• Limited supply voltage range (4.5V to 5.5V) may restrict its use in certain applications.
• Propagation delay time of 9 ns (typical) may introduce timing issues in high-frequency circuits.

Working Principles

The CD74HCT126MG4 is a quad bus buffer that operates as a non-inverting buffer/driver. It takes input signals from the A, B, C, and D pins and provides buffered outputs on the Y1, Y2, Y3, and Y4 pins. The OE (Output Enable) pin controls the output state, allowing the user to enable or disable the outputs as needed. When the OE pin is low, the outputs are active, and when it is high, the outputs are in a high-impedance state.

Detailed Application Field Plans

The CD74HCT126MG4 can be used in various applications, including:

1. Digital Communication Systems: Buffering and driving signals in data transmission circuits.
2. Microcontroller Interfacing: Level shifting and signal buffering between microcontrollers and peripheral devices.
3. Memory Address Decoding: Generating multiple chip select signals for memory modules.
4. Clock Distribution: Buffering clock signals to distribute them across different sections of a system.
5. LED Display Control: Driving LED segments in alphanumeric displays.

Alternative Models

1. SN74HCT126N: DIP-14 package, similar specifications.
2. MC74HCT126AN: PDIP-14 package, similar specifications.
3. 74HCT126D: SOIC-14 package, similar specifications.

These alternative models offer similar functionality and can be used as substitutes for the CD74HCT126MG4 in various applications.

In conclusion, the CD74HCT126MG4 is a high-speed quad bus buffer that provides TTL-compatible buffering and driving capabilities. Its compact SOIC-14 package and wide range of applications make it a versatile choice for digital circuit design. However, its limited supply voltage range and propagation delay time should be considered when selecting this IC for specific projects.