SN74HC244DWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-speed, CMOS technology
• Package: SOIC-20
• Essence: Non-inverting buffer with 3-state outputs
• Packaging/Quantity: Tape and Reel, 2500 units 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: 80MHz
• Propagation Delay Time: 9ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74HC244DWR has a total of 20 pins arranged as follows:

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

Functional Features

The SN74HC244DWR is a non-inverting buffer with 3-state outputs. It is designed to drive high-capacitance loads while maintaining high-speed performance. The device operates on CMOS technology, allowing for low power consumption and wide voltage range compatibility.

Advantages and Disadvantages

Advantages: - High-speed operation - Wide supply voltage range - Low power consumption - 3-state outputs for bus-oriented applications

Disadvantages: - Limited output current capability - Not suitable for high-power applications

Working Principles

The SN74HC244DWR acts as a buffer, amplifying and reshaping input signals to provide clean and reliable outputs. The 3-state outputs allow multiple devices to share a common bus without interfering with each other. When the Output Enable (OE) pin is high, the outputs are in the high-impedance state, effectively disconnecting them from the bus.

Detailed Application Field Plans

The SN74HC244DWR is commonly used in various applications, including:

1. Data communication systems
2. Microprocessor interfacing
3. Memory address decoding
4. Bus drivers
5. Clock distribution networks

Detailed and Complete Alternative Models

1. SN74HCT244: Similar functionality but operates at a lower voltage range (4.5V to 5.5V).
2. SN74LS244: TTL logic family alternative with different voltage levels and characteristics.
3. SN74ACT244: Faster switching speed and higher output current capability compared to SN74HC244DWR.

These alternative models offer similar functionality to the SN74HC244DWR but may have different specifications and characteristics.

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