Encyclopedia Entry: 74VHC244PW,118

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal Buffer/Line Driver
• Characteristics: High-Speed, Low-Power, CMOS Logic
• Package: TSSOP-20
• Essence: Voltage Level Shifter and Line Driver
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.0V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 125 MHz
• Number of Channels: 8
• Output Current: ±6mA
• Propagation Delay: 4.3 ns (typical)

Detailed Pin Configuration

The 74VHC244PW,118 IC has a TSSOP-20 package with the following pin configuration:

__ __ A1 | 1 20 | VCC A2 | 2 19 | B1 A3 | 3 18 | B2 A4 | 4 17 | B3 A5 | 5 16 | B4 A6 | 6 15 | B5 A7 | 7 14 | B6 GND | 8 13 | B7 OE | 9 12 | B8 Y1 |10 11 | Y2 ‾‾ ‾‾

Functional Features

• The 74VHC244PW,118 is an octal buffer/line driver designed for general-purpose logic-level shifting and signal amplification.
• It operates at high speeds while consuming low power due to its CMOS technology.
• The IC provides non-inverting outputs, making it suitable for various applications requiring voltage level shifting and signal buffering.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient signal transmission. - Low-power consumption makes it suitable for battery-powered devices. - Wide supply voltage range enables compatibility with different systems. - Non-inverting outputs simplify circuit design.

Disadvantages: - Limited output current may restrict usage in certain high-current applications. - Propagation delay can affect timing-sensitive circuits.

Working Principles

The 74VHC244PW,118 operates by receiving input signals on the A1-A7 pins and amplifying them to the corresponding Y1-Y2 output pins. The OE (Output Enable) pin controls the output state, enabling or disabling the buffer function. 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 74VHC244PW,118 finds applications in various fields, including: 1. Microcontroller-based systems: It can be used to interface microcontrollers with external devices, such as sensors, displays, and memory modules. 2. Communication systems: The IC facilitates signal buffering and level shifting in communication interfaces like UART, SPI, and I2C. 3. Industrial automation: It is suitable for driving actuators, relays, and other control elements in industrial automation systems. 4. Automotive electronics: The IC can be employed in automotive applications that require voltage level shifting and signal amplification.

Detailed and Complete Alternative Models

Some alternative models to the 74VHC244PW,118 include: - SN74LV244A: Low-Voltage Octal Buffer/Line Driver - MC74VHC244: High-Speed CMOS Octal Buffer/Line Driver - CD74HCT244: High-Speed CMOS Logic Octal Buffer/Line Driver

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

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