SN74AHC244DWE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics:
  • High-Speed CMOS Logic
  • 3-State Outputs
  • Wide Operating Voltage Range: 2 V to 5.5 V
  • High Output Drive: ±24 mA at 3.3 V
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: This IC is designed to provide buffering and line driving capabilities in digital circuits.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6 ns (typical)
• Maximum Operating Frequency: 100 MHz

Detailed Pin Configuration

The SN74AHC244DWE4 has a total of 20 pins, which are arranged as follows:

----------------- OE -|1 20|- VCC A1 -|2 19|- B1 A2 -|3 18|- B2 A3 -|4 17|- B3 A4 -|5 SN74 16|- B4 A5 -|6 AHC 15|- B5 A6 -|7 244 14|- B6 A7 -|8 13|- B7 GND -|9 12|- B8 Y1 -|10 11|- Y2 -----------------

Functional Features

• The SN74AHC244DWE4 is equipped with 3-state outputs, allowing multiple devices to share a common bus.
• It provides high-speed CMOS logic, making it suitable for applications requiring fast signal transmission.
• The wide operating voltage range allows compatibility with various power supply levels.
• High output drive capability enables the driving of capacitive loads and long traces.

Advantages and Disadvantages

Advantages: - Wide operating voltage range provides flexibility in different circuit designs. - High-speed CMOS logic ensures efficient signal propagation. - 3-state outputs allow for bus sharing among multiple devices.

Disadvantages: - Limited maximum operating frequency compared to some alternative models. - May not be suitable for applications requiring extremely low power consumption.

Working Principles

The SN74AHC244DWE4 operates by receiving input signals on its A1-A7 pins. These signals are then buffered and amplified before being transmitted to the corresponding B1-B8 output pins. The OE (Output Enable) pin controls the activation of the outputs. When OE is low, the outputs are enabled and reflect the input signals. Conversely, when OE is high, the outputs are disabled and enter a high-impedance state.

Detailed Application Field Plans

The SN74AHC244DWE4 is commonly used in various digital systems, including:

1. Microcontrollers: It can be employed as a buffer between the microcontroller and other peripheral devices, ensuring reliable signal transmission.
2. Data Communication: The IC can be utilized in communication interfaces to amplify and buffer data signals, enhancing their integrity during transmission.
3. Memory Systems: It finds application in memory modules to provide buffering capabilities, enabling efficient data transfer between memory chips and the controller.

Detailed and Complete Alternative Models

1. SN74LVC244A: This IC offers similar functionality but operates at lower voltage levels, making it suitable for low-power applications.
2. SN74HCT244: It provides compatibility with higher voltage levels and has a wider operating temperature range, making it suitable for industrial applications.
3. SN74LVTH244A: This model combines the features of low-voltage operation and high-speed CMOS logic, making it ideal for applications requiring both.

(Note: The above alternative models are just a few examples; there are several other alternatives available in the market.)

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