SN74HC244DWRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-speed, CMOS technology
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Non-inverting octal buffer/line driver with 3-state outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 50 MHz
• Number of Buffers/Drivers: 8
• Output Current: ±6mA
• Propagation Delay Time: 10 ns

Detailed Pin Configuration

The SN74HC244DWRE4 has a total of 20 pins, which are distributed as follows:

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

Functional Features

The SN74HC244DWRE4 is a non-inverting octal buffer/line driver with 3-state outputs. It is designed to provide high-speed signal buffering and driving capabilities. The device operates using CMOS technology, allowing for low power consumption and compatibility with a wide range of voltage levels.

The 3-state outputs enable the device to be connected to multiple devices without causing conflicts or bus contention. The output enable (OE) pin controls the state of the outputs, allowing them to be either active or in a high-impedance state.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Wide supply voltage range - 3-state outputs for bus compatibility

Disadvantages: - Limited output current capability - Propagation delay time may affect timing-sensitive applications

Working Principles

The SN74HC244DWRE4 operates by receiving input signals on the A1-A8 pins. These signals are then buffered and amplified by the internal circuitry. The outputs (Y1-Y8) replicate the input signals with a non-inverted polarity.

The OE pin controls the state of the outputs. When OE is low, the outputs are active and reflect the input signals. When OE is high, the outputs enter a high-impedance state, effectively disconnecting them from the external circuit.

Detailed Application Field Plans

The SN74HC244DWRE4 is commonly used in various applications, including:

1. Data communication systems
2. Address and data buses in microprocessors
3. Memory interfacing
4. Industrial automation
5. Robotics
6. Automotive electronics

The device's high-speed operation and 3-state outputs make it suitable for applications that require signal buffering, driving, and bus compatibility.

Detailed and Complete Alternative Models

1. SN74HC244N: DIP (Dual Inline Package) version of the SN74HC244DWRE4.
2. SN74HCT244: Similar functionality with TTL (Transistor-Transistor Logic) compatibility.
3. SN74LVC244A: Low-voltage version with improved noise immunity.

These alternative models offer similar functionality to the SN74HC244DWRE4 but may have different package options or additional features tailored to specific requirements.

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