74LVT2244SJ

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics:
  • Low Voltage TTL (LVT) technology
  • 8-bit bidirectional buffer
  • High-speed operation
  • Schmitt-trigger inputs for noise immunity
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Provides voltage level shifting and buffering capabilities
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Input Capacitance: 4pF (typical)
• Output Capacitance: 6pF (typical)
• Propagation Delay Time: 3.5ns (typical)
• Output Current: ±24mA

Detailed Pin Configuration

The 74LVT2244SJ IC has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) 1
2. A1 (Input/Output) 1
3. I/O1 (Bidirectional Data) 1
4. GND (Ground)
5. I/O2 (Bidirectional Data) 2
6. A2 (Input/Output) 2
7. OE (Output Enable) 2
8. VCC (Supply Voltage)
9. I/O3 (Bidirectional Data) 3
10. A3 (Input/Output) 3
11. I/O4 (Bidirectional Data) 4
12. A4 (Input/Output) 4
13. OE (Output Enable) 3
14. I/O5 (Bidirectional Data) 5
15. A5 (Input/Output) 5
16. I/O6 (Bidirectional Data) 6
17. A6 (Input/Output) 6
18. OE (Output Enable) 4
19. I/O7 (Bidirectional Data) 7
20. A7 (Input/Output) 7

Functional Features

• The 74LVT2244SJ is an 8-bit bidirectional buffer designed for low voltage applications.
• It operates with a supply voltage range of 2.7V to 3.6V, making it suitable for use in battery-powered devices.
• The Schmitt-trigger inputs provide noise immunity and allow for reliable operation in noisy environments.
• The IC offers high-speed performance, with a propagation delay time of only 3.5ns.
• It can drive ±24mA output current, enabling it to interface with various logic families.

Advantages and Disadvantages

Advantages: - Low voltage operation allows for compatibility with modern electronic systems. - High-speed performance enables efficient data transfer. - Schmitt-trigger inputs provide noise immunity, ensuring reliable operation. - Bidirectional buffering capability simplifies circuit design.

Disadvantages: - Limited supply voltage range may restrict its use in certain applications. - Output current limitations may not be sufficient for driving heavy loads.

Working Principles

The 74LVT2244SJ functions as a bidirectional buffer by amplifying and shifting the voltage levels of input signals. When the output enable (OE) pin is active, the IC allows bidirectional data flow between the input/output (I/O) pins. When the OE pin is inactive, the IC isolates the input and output sides, preventing any data transfer.

The Schmitt-trigger inputs ensure that the IC's output transitions occur at well-defined voltage levels, even in the presence of noise or signal degradation. This feature enhances the reliability and robustness of the buffer.

Detailed Application Field Plans

The 74LVT2244SJ is commonly used in various applications, including:

1. Microcontroller interfacing: It can be used to interface microcontrollers with other devices operating at different voltage levels.
2. Level shifting: The IC enables voltage level shifting between different logic families, facilitating compatibility between incompatible systems.
3. Signal buffering: It provides buffering capabilities for bidirectional data lines, ensuring signal integrity and preventing signal degradation.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74LVT2244SJ are:

1. 74LVX244: This IC also provides bidirectional buffering and operates at a wider supply voltage range of 2.0V to 5.5V.
2. SN74LVC244A: It offers bidirectional buffering with a wide supply voltage range of 1.65V to 5.5V and lower propagation delay time.
3. MC74VHC244: This IC