74LVC244AD

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74LVC244AD

Buffers & Line Drivers OCTAL BUFF/LDRVR 3ST 3.3V

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Standard Pack Qty 38

概述

Description

The 74LVC244AD is an octal buffer/driver with 3-state outputs, designed for low voltage applications. It is part of the 74LVC family, which operates with a supply voltage range of 1.2V to 5.5V, making it suitable for interfacing between different voltage levels in digital circuits.
This device features eight independent outputs that can be individually enabled or disabled, allowing for flexible control of data flow. The 74LVC244AD is particularly useful in applications requiring signal amplification or isolation, such as communication interfaces, data buses, and memory systems.
Key characteristics include:
- Low power consumption
- High-speed operation
- TTL-compatible inputs
- 3-state output control (active high or active low)
The package options typically include SOIC, TSSOP, or VQFN, enhancing its usability in various PCB designs. Overall, the 74LVC244AD is an essential component for modern digital circuits requiring efficient signal management.

Features

The 74LVC244AD is an octal buffer/driver designed for high-speed and low-power operations in CMOS technology. Key features include:
1. Functionality: It provides eight independent buffers or drivers, each capable of driving capacitive loads.
2. Voltage Range: Operates with a supply voltage range from 1.2V to 5.5V, making it compatible with various logic levels.
3. Logic Levels: Accepts TTL input levels while providing CMOS output levels.
4. Speed: High-speed operation with a propagation delay as low as 3.5 ns at 5V.
5. Low Power: Consumes minimal power, with low quiescent current for energy-efficient designs.
6. Active Low Enable: Features an active-low output enable (OE) for controlling output states.
7. Drive Capability: Capable of driving up to 64 mA of current per output, suitable for interfacing with other chips and components.
8. Thermal Protection: Built-in thermal protection ensures reliable operation under varying conditions.
These characteristics make the 74LVC244AD ideal for data transmission and signal buffering applications in digital circuits.

Package

The 74LVC244AD is typically available in a 20-pin TSSOP (Thin Shrink Small Outline Package) or a 20-pin PDIP (Plastic Dual In-line Package) configuration.

Pinout

The 74LVC244AD is an octal buffer/driver with 3-state outputs. It has a total of 20 pins. The pin configuration includes:
- 1-8: A1 to A8 (Inputs)
- 9: GND (Ground)
- 10: OE (Output Enable, active low)
- 11-18: Y1 to Y8 (Outputs)
- 19: VCC (Supply Voltage)
- 20: NC (No Connect)
The function of the 74LVC244AD is to buffer signals, providing high drive capability and low output impedance. It is commonly used for interfacing and level shifting between different logic levels in digital circuits. The outputs can be placed in a high-impedance state, allowing for multiple devices to share the same bus without interference. It operates with a wide voltage range (1.65V to 5.5V) and is compatible with various logic families.

Manufacturer

The manufacturer of the 74LVC244AD is NXP Semiconductors. NXP is a global semiconductor company that specializes in designing and manufacturing a wide range of integrated circuits and semiconductor devices. The company focuses on automotive, industrial, and Internet of Things (IoT) applications, providing solutions in areas such as secure connectivity, processing, and sensing. NXP emerged from the spin-off of Philips' semiconductor division and is well-known for its expertise in automotive electronics, RFID technology, and high-performance mixed-signal applications.

Application

The 74LVC244AD is an octal buffer/driver with 3-state outputs, commonly used in digital circuits for signal buffering, level shifting, and driving capacitive loads. Its application areas include data communication interfaces, bus transceivers, and general-purpose logic level conversion. It is suitable for use in low-voltage systems, such as portable devices, microcontroller interfacing, and memory address/data bus drivers, enhancing signal integrity in high-speed applications.

Equivalent

The 74LVC244AD is an octal buffer/driver with 3-state outputs. Equivalent products include the 74AHC244, 74HC244, and 74HCT244. These alternatives may vary in voltage levels and specifications, so ensure compatibility with your application. Always check the datasheets for detailed comparisons.

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