SN74AC244PWRE4

Product Overview

Category: Integrated Circuit (IC)

Use: The SN74AC244PWRE4 is a high-speed octal buffer and line driver with 3-state outputs. It is designed to drive heavily loaded clock and bus lines at speeds up to 125 MHz.

Characteristics: - High-speed operation - 3-state outputs for bus-oriented applications - Wide operating voltage range: 2 V to 6 V - Low power consumption - Schmitt-trigger inputs for noise immunity - Available in a small package size

Package: TSSOP (Thin Shrink Small Outline Package)

Essence: The SN74AC244PWRE4 is an essential component in electronic devices that require buffering and driving of signals on bus lines, such as microprocessors, memory systems, and communication interfaces.

Packaging/Quantity: The SN74AC244PWRE4 is typically packaged in reels containing 2500 units.

Specifications

• Supply Voltage Range: 2 V to 6 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 5 ns
• Maximum Output Current: ±24 mA

Detailed Pin Configuration

The SN74AC244PWRE4 has a total of 20 pins, which are assigned as follows:

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

Functional Features

The SN74AC244PWRE4 offers the following functional features:

• High-speed buffering and driving of signals on bus lines
• 3-state outputs for bus-oriented applications, allowing multiple devices to share a common bus
• Schmitt-trigger inputs for improved noise immunity
• Wide operating voltage range, making it compatible with various systems
• Low power consumption, reducing energy requirements

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - 3-state outputs allow for bus sharing and flexibility in system design - Schmitt-trigger inputs provide noise immunity, ensuring reliable signal transmission - Wide operating voltage range enhances compatibility with different systems - Low power consumption contributes to energy efficiency

Disadvantages: - Limited output current may restrict its use in certain high-current applications - TSSOP package may require careful handling during assembly

Working Principles

The SN74AC244PWRE4 operates by receiving input signals on its eight data input pins (A1-A8) and buffering them 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 bus lines. Conversely, when the OE pin is high, the outputs enter a high-impedance state, effectively disconnecting them from the bus lines.

The SN74AC244PWRE4 utilizes advanced semiconductor technology to achieve high-speed operation, low power consumption, and noise immunity.

Detailed Application Field Plans

The SN74AC244PWRE4 finds extensive application in various electronic systems, including but not limited to:

1. Microprocessor-based systems
2. Memory systems (RAM, ROM, Flash)
3. Communication interfaces (UART, SPI, I2C)
4. Industrial automation and control systems
5. Automotive electronics
6. Consumer electronics

In microprocessor-based systems, the SN74AC244PWRE4 is used to buffer and drive address and data buses, ensuring reliable communication between the microprocessor and other peripheral devices.

In memory systems, it facilitates the buffering of address and data signals between the memory modules and the memory controller, enabling efficient data transfer.

In communication interfaces, the SN74AC244PWRE4 acts as a line driver, amplifying and shaping the signals for transmission over long distances or through noisy environments.

Detailed and Complete Alternative Models

1. SN74ACT244: Similar to SN74AC244PWRE4 but operates at higher speeds.
2. SN74HC244: Compatible with 5 V systems, suitable for retrofitted designs.
3. SN74LVC244A: Low-voltage version, designed for operation in 1.65 V to 3.6 V systems. 4