SN74LV244APWRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: Low-voltage, Octal Bus Buffer with 3-State Outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: This IC is designed to provide buffering and line driving capabilities for digital signals in low-voltage applications.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• High-Level Input Voltage: 2.1V (min), VCC (max)
• Low-Level Input Voltage: GND (min), 0.8V (max)
• High-Level Output Voltage: VCC - 0.7V (min), VCC (max)
• Low-Level Output Voltage: GND (min), 0.35V (max)
• Maximum Operating Frequency: 100MHz
• Number of Channels: 8
• Output Type: 3-State
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LV244APWRE4 has a total of 20 pins, which are assigned 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. OE - Output Enable
11. Y5 - Output Y5
12. A5 - Input A5
13. Y6 - Output Y6
14. A6 - Input A6
15. Y7 - Output Y7
16. A7 - Input A7
17. Y8 - Output Y8
18. VCC - Power Supply
19. GND - Ground
20. OE - Output Enable

Functional Features

• Octal buffer with 3-state outputs.
• Provides non-inverting buffering and line driving capabilities for digital signals.
• Enables bidirectional communication between different voltage domains.
• Supports low-voltage operation, making it suitable for battery-powered devices.
• Offers high-speed operation with a maximum frequency of 100MHz.
• Features 3-state outputs, allowing multiple devices to share a common bus.

Advantages and Disadvantages

Advantages: - Low-voltage operation extends battery life in portable applications. - High-speed performance enables efficient data transfer. - 3-state outputs facilitate bus sharing among multiple devices. - Small package size saves board space.

Disadvantages: - Limited number of channels (8) compared to some other buffer ICs. - Not suitable for high-voltage applications.

Working Principles

The SN74LV244APWRE4 operates by receiving digital input signals on its input pins (A1-A7). These signals are then buffered and amplified internally before being driven to the corresponding output pins (Y1-Y8). The output enable pin (OE) controls the state of the outputs, allowing them to be either active or in a high-impedance state.

When the OE pin is low, the outputs are enabled and actively drive the connected circuitry. Conversely, when the OE pin is high, the outputs enter a high-impedance state, effectively disconnecting them from the circuit. This feature allows multiple devices to share the same bus without interfering with each other.

Detailed Application Field Plans

The SN74LV244APWRE4 finds application 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 enables signal buffering and line driving in communication interfaces, such as UART, SPI, and I2C.
3. Industrial automation: It facilitates signal conditioning and level shifting in industrial control systems.
4. Automotive electronics: The IC is suitable for automotive applications that require low-voltage operation and high-speed data transfer.
5. Consumer electronics: It can be utilized in devices like smartphones, tablets, and gaming consoles for signal amplification and voltage level conversion.

Detailed and Complete Alternative Models

Some alternative models to the SN74LV244APWRE4 include:

1. SN74LVC244A: Similar octal buffer IC with 3-state outputs, but operates at a wider supply voltage range (1.65V to 3.6V).
2. SN74HCT244: Octal buffer IC with 3-state outputs designed for higher-voltage applications (up to 5.5V).
3. SN74LV245A: Oct