SN74LS244DWE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: TTL Logic, Octal 3-State Non-Inverting Buffer/Line Driver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The SN74LS244DWE4 is a high-speed buffer and line driver IC that provides non-inverting logic level translation. It is designed to drive heavily loaded TTL circuits and can be used in various applications where buffering or line driving is required.
• Packaging/Quantity: The SN74LS244DWE4 is available in a standard SOIC package and is typically sold in reels of 2500 units.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Input Voltage: 0V to 5.25V
• Output Voltage: 0V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 15ns (max)
• Output Current: ±24mA
• Number of Channels: 8

Detailed Pin Configuration

The SN74LS244DWE4 has a total of 20 pins, which are arranged as follows:

__ __ A1 |1 \__/ 20| VCC B1 |2 19| A2 A3 |3 18| B2 B3 |4 17| A4 A5 |5 16| B4 B5 |6 15| A6 A7 |7 14| B6 B7 |8 13| A8 GND |9 12| B8 Y1 |10 11| G ‾‾ ‾‾

Functional Features

• Non-inverting buffer/line driver with 3-state outputs.
• High-speed operation suitable for driving heavily loaded TTL circuits.
• Provides voltage level translation between different logic families.
• 3-state outputs allow multiple devices to share a common bus.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient buffering and line driving in TTL circuits.
• 3-state outputs facilitate bus sharing among multiple devices.
• Wide operating temperature range (-40°C to +85°C) allows for use in various environments.
• Compact SOIC package offers space-saving integration.

Disadvantages

• Limited output current (±24mA) may not be sufficient for certain applications requiring higher drive capability.
• TTL logic compatibility restricts direct interfacing with other logic families without additional level-shifting circuitry.

Working Principles

The SN74LS244DWE4 operates as a non-inverting buffer and line driver. It accepts TTL-compatible input signals and provides non-inverted output signals with high drive capability. The 3-state outputs allow the device to be effectively disconnected from the bus, enabling multiple devices to share the same bus without interference.

Detailed Application Field Plans

The SN74LS244DWE4 can be used in various applications, including:

1. Data communication systems
2. Memory address decoding
3. Bus drivers in microprocessor systems
4. Industrial control systems
5. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74LS244DWE4 include:

1. SN74LS240: Octal Inverting Buffer/Line Driver
2. SN74LS245: Octal Bus Transceiver with 3-State Outputs
3. SN74LS541: Octal Buffer/Line Driver with 3-State Outputs

These alternative models provide different features and pin configurations, allowing users to choose the most suitable option for their specific application requirements.

Word count: 445 words