SN74HC244PW

Product Overview

• Category: Integrated Circuit
• Use: Buffer/Line Driver
• Characteristics: High-Speed, CMOS Logic, Octal Bus Buffer
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: A high-performance buffer that provides eight independent buffer gates with 3-state outputs.
• Packaging/Quantity: Tape and Reel, 2500 pieces 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: 80 MHz
• Propagation Delay Time: 9 ns
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The SN74HC244PW has a total of 20 pins. The pin configuration is as follows:

1. A1 (Input)
2. Y1 (Output)
3. A2 (Input)
4. Y2 (Output)
5. A3 (Input)
6. Y3 (Output)
7. A4 (Input)
8. Y4 (Output)
9. GND (Ground)
10. Y5 (Output)
11. A5 (Input)
12. Y6 (Output)
13. A6 (Input)
14. Y7 (Output)
15. A7 (Input)
16. Y8 (Output)
17. OE (Output Enable)
18. VCC (Supply Voltage)
19. NC (No Connection)
20. GND (Ground)

Functional Features

• Eight independent buffer gates with 3-state outputs
• High-speed operation suitable for various applications
• CMOS technology for low power consumption
• 3-state outputs allow multiple devices to share a common bus

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - Low power consumption due to CMOS technology - 3-state outputs facilitate bus sharing among multiple devices

Disadvantages: - Limited voltage range (2V to 6V) - Propagation delay time may affect timing-sensitive applications

Working Principles

The SN74HC244PW is designed to buffer and drive bus lines. It operates by receiving input signals on the A1-A7 pins and providing corresponding output signals on the Y1-Y8 pins. The OE (Output Enable) pin controls the 3-state outputs, allowing them to be either active or in high-impedance state.

Detailed Application Field Plans

The SN74HC244PW is commonly used in various applications, including:

1. Microprocessor/Controller Interfacing: It can be used to interface microprocessors or controllers with external memory or peripheral devices.
2. Data Communication Systems: It is suitable for buffering and driving data lines in communication systems such as UART, SPI, or I2C.
3. Industrial Automation: It can be utilized in industrial automation systems for signal buffering and level shifting.
4. Automotive Electronics: The IC finds application in automotive electronics for interfacing sensors, actuators, and control modules.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to SN74HC244PW are:

1. SN74HCT244PW: This model offers compatibility with TTL logic levels in addition to CMOS levels.
2. SN74LVC244APW: It operates at lower voltage levels (1.65V to 5.5V) and provides faster switching speeds.
3. SN74LVTH244APW: This model features reduced noise and improved signal integrity due to its bus-hold feature.

These alternative models can be considered based on specific requirements and compatibility with existing systems.

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