SN74AS641DWRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-speed, Non-Inverting, Tri-State
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: A high-performance buffer and line driver IC with tri-state outputs.
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6ns (typical)
• Output Current: ±24mA
• Input Capacitance: 3pF (typical)
• Output Capacitance: 8pF (typical)

Detailed Pin Configuration

The SN74AS641DWRE4 has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

• High-speed operation: The SN74AS641DWRE4 is designed for high-speed data transmission, making it suitable for applications requiring fast signal propagation.
• Non-inverting buffer: The IC provides non-inverting functionality, ensuring that the output signal matches the input signal polarity.
• Tri-state outputs: The tri-state feature allows the outputs to be disabled, effectively disconnecting them from the circuit and preventing any interference with other devices.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transmission. - Non-inverting functionality ensures accurate signal reproduction. - Tri-state outputs provide flexibility in controlling the output state.

Disadvantages: - Limited supply voltage range restricts compatibility with certain systems. - Output current limitations may not be suitable for high-power applications.

Working Principles

The SN74AS641DWRE4 operates by receiving input signals on its A1-A7 pins. These signals are then buffered and amplified internally before being transmitted through the corresponding Y1-Y8 output pins. The OE pins control the enable/disable state of the outputs. When the OE pin is low, the outputs are enabled and actively driven. Conversely, when the OE pin is high, the outputs enter a high-impedance state, effectively disconnecting them from the circuit.

Detailed Application Field Plans

The SN74AS641DWRE4 is commonly used in various applications, including:

1. Data communication systems: The high-speed operation and non-inverting functionality make it suitable for buffering and driving data signals in communication systems such as Ethernet, USB, and RS-485.
2. Memory interfacing: The IC can be used to interface between memory modules and microcontrollers, ensuring reliable data transfer and signal integrity.
3. Bus drivers: It can serve as a bus driver in computer systems, enabling efficient data transfer between different components.
4. Industrial automation: The tri-state outputs allow for easy integration into industrial control systems, where multiple devices need to share a common bus.

Detailed and Complete Alternative Models

1. SN74AS640DWRE4: Similar to SN74AS641DWRE4 but with inverted outputs.
2. SN74LS641N: Low-power version of the SN74AS641DWRE4 with similar functionality.
3. SN74HC641N: CMOS-based buffer and line driver IC with comparable specifications.

These alternative models offer similar functionality and can be considered as replacements depending on specific application requirements.

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