74HCT244D

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74HCT244D

IC BUFF NON-INVERT 5.5V 20-SOIC

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規格

Series 74HCT
Part Status Obsolete
Base Product Number 74HCT244
Logic Type Buffer, Non-Inverting
Number of Elements 2
Number of Bits per Element 4
Output Type 3-State
Current - Output High, Low 6mA, 6mA
Voltage - Supply 4.5V ~ 5.5V
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package 20-SOIC (0.295", 7.50mm Width)
Supplier Device Package 20-SOIC
Packaging Cut Tape (CT), Tape & Reel (TR)

概述

Description

The 74HCT244D is an octal buffer/driver integrated circuit (IC) that belongs to the 74HCT family, designed for high-speed digital logic applications. It features eight output channels and is used to strengthen signals, allowing for increased loading capacity and improved signal integrity in digital circuits.
Key characteristics include a wide operating voltage range (typically 4.5V to 5.5V), TTL compatibility, and high-speed performance, making it suitable for a variety of devices. The 74HCT244D operates as a non-inverting buffer, meaning the output follows the input state but provides additional current drive capability.
The device is available in various packages, including DIP and SOIC, facilitating integration into different circuit layouts. It is commonly used in applications such as data routing, signal buffering, and fan-out expansion in digital systems.
Overall, the 74HCT244D is a versatile component in digital electronics, offering robust performance for buffering and driving logic signals.

Features

The 74HCT244D is a hex buffer/driver with tri-state outputs, commonly used in digital circuits for data buffering and signal driving. Key features include:
1. Hex Buffers: It contains six independent buffers, allowing for multiple signal processing paths.
2. Tri-State Outputs: Outputs can be enabled or disabled, facilitating connection to shared data buses.
3. High-Speed Operation: Designed for fast switching speeds, suitable for high-frequency applications.
4. TTL Compatibility: It is compatible with TTL (Transistor-Transistor Logic) levels, making it suitable for integration in various digital systems.
5. Wide Voltage Range: Operates typically with a supply voltage of 4.5V to 5.5V, compatible with both 5V and lower voltage systems.
6. Low Power Consumption: It offers reduced power usage compared to standard TTL devices.
7. Standardized Pin Configuration: Available in various packages, including DIP and SOIC, for easy integration into PCB designs.
These features make the 74HCT244D ideal for applications in data routing, signal buffering, and interfacing in digital electronics.

Package

The 74HCT244D is packaged in a dual in-line package (DIP) format. Specifically, it typically comes in a 20-pin DIP configuration, suitable for through-hole mounting on circuit boards.

Pinout

The 74HCT244D is an octal buffer/driver with tri-state outputs. It has 20 pins in total. The pin configuration is as follows:
- Pins 1-8: Data Inputs (A1 to A8)
- Pins 9-16: Data Outputs (Y1 to Y8)
- Pin 19: Output Enable (OE), active low
- Pin 20: VCC (Supply Voltage, typically 4.5V to 5.5V)
- Pin 10: Ground (GND)
Functionally, the 74HCT244D takes input signals from the A pins and buffers them to the Y outputs when the Output Enable (OE) is low. When OE is high, all outputs are in a high-impedance state. This device is commonly used to drive high-capacitance loads and to isolate different sections of a circuit.

Manufacturer

The 74HCT244D is manufactured by Texas Instruments (TI), a leading global semiconductor company. TI specializes in the design and production of a wide range of electronic components, including analog, digital, and embedded processing devices. Founded in 1930, Texas Instruments has a significant presence in various markets, including automotive, industrial, communications, and consumer electronics. The company is known for its innovation in semiconductor technology, particularly in integrated circuits (ICs) and microcontrollers. TI's products are widely used in electronic systems worldwide, making it a key player in the electronics industry.

Application

The 74HCT244D is an octal buffer/driver with tri-state outputs, commonly used in digital circuits for signal amplification and isolation. Its primary application areas include data routing, bus driving, and interfacing TTL and CMOS devices, particularly in microcontroller and microprocessor systems. It is also utilized in memory management, where high-speed data handling is essential, and in systems requiring increased signal integrity and reduced loading effects.

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