Encyclopedia Entry: 74ALVC244PW,118

Product Overview

Category

The 74ALVC244PW,118 belongs to the category of integrated circuits (ICs) and specifically falls under the family of logic gates.

Use

This product is commonly used in digital electronics for signal amplification, buffering, and level shifting purposes. It serves as a non-inverting octal buffer/line driver with 3-state outputs.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• 3-state outputs for bus-oriented applications
• Schmitt-trigger action on all inputs
• Balanced propagation delays
• Symmetrical output impedance

Package and Quantity

The 74ALVC244PW,118 is available in a TSSOP (Thin Shrink Small Outline Package) package. It is supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Range: -0.5V to VCC + 0.5V
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Input Capacitance: 4.5pF
• Output Capacitance: 6pF
• Propagation Delay: 3.9ns (typical)

Pin Configuration

The 74ALVC244PW,118 has a total of 20 pins, which are assigned specific functions as follows:

1. A1 - Input A1
2. Y1 - Output Y1
3. A2 - Input A2
4. Y2 - Output Y2
5. GND - Ground
6. A3 - Input A3
7. Y3 - Output Y3
8. A4 - Input A4
9. Y4 - Output Y4
10. VCC - Supply Voltage
11. OE - Output Enable
12. Y5 - Output Y5
13. A5 - Input A5
14. Y6 - Output Y6
15. A6 - Input A6
16. Y7 - Output Y7
17. A7 - Input A7
18. Y8 - Output Y8
19. GND - Ground
20. A8 - Input A8

Functional Features

The 74ALVC244PW,118 offers the following functional features:

1. Non-inverting buffer/line driver: It amplifies and buffers digital signals without changing their logic levels.
2. 3-state outputs: The outputs can be put into a high-impedance state, allowing multiple devices to share a common bus.
3. Schmitt-trigger action: Ensures noise immunity and provides hysteresis for better signal integrity.
4. Balanced propagation delays: The delay from input to output is symmetrical, ensuring accurate timing in digital circuits.

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data transfer.
• Low power consumption makes it suitable for battery-powered applications.
• Wide operating voltage range enables compatibility with various systems.
• 3-state outputs facilitate bus-oriented designs.
• Schmitt-trigger action enhances noise immunity.

Disadvantages

• Limited number of inputs and outputs (8 each).
• Not suitable for applications requiring higher current capabilities.
• May require additional components for certain applications.

Working Principles

The 74ALVC244PW,118 operates based on CMOS (Complementary Metal-Oxide-Semiconductor) technology. It utilizes MOSFET transistors to amplify and buffer digital signals. When an input signal is received, the internal circuitry amplifies it and drives the corresponding output pin. The 3-state outputs allow the device to be effectively connected to a bus, enabling multiple devices to share the same communication lines.

Application Field Plans

The 74ALVC244PW,118 finds extensive use in various digital electronic applications, including but not limited to:

1. Microcontrollers and microprocessors
2. Data communication systems
3. Memory interfaces
4. Industrial automation
5. Automotive electronics
6. Consumer electronics

Alternative Models

For similar functionality and performance, alternative models to the 74ALVC244PW,118 include:

1. SN74LVC244A: Manufactured by Texas Instruments
2. MC74LVX244: Manufactured by ON Semiconductor
3. CD74HCT244: Manufactured by Texas Instruments
4. 74HC244: Manufactured by NXP Semiconductors

These alternatives can be considered based on specific application requirements and availability.

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