SN74HCT244DWRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-speed, CMOS logic level shifting, 3-state outputs
• Package: SOIC-20
• Essence: Non-inverting octal buffer/line driver with 3-state outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 74 MHz
• Number of Buffers/Drivers: 8
• Output Current: ±6mA
• Propagation Delay Time: 13 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74HCT244DWRE4 has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

• Non-inverting buffer/line driver
• 3-state outputs for bus-oriented applications
• High-speed operation suitable for various digital systems
• CMOS logic level shifting capability
• Wide supply voltage range allows compatibility with different power sources

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - CMOS logic level shifting ensures compatibility with different logic families - 3-state outputs facilitate bus sharing in multi-device systems - Wide supply voltage range enhances versatility

Disadvantages: - Limited output current may restrict use in high-current applications - Propagation delay time may affect timing-sensitive operations

Working Principles

The SN74HCT244DWRE4 is an octal buffer/line driver that amplifies and buffers digital signals. It operates by receiving input signals on the A1-A7 pins and providing amplified outputs on the Y1-Y8 pins. The OE (Output Enable) pin controls the 3-state outputs, allowing multiple devices to share a common bus without interference.

Detailed Application Field Plans

The SN74HCT244DWRE4 is commonly used in various digital systems and applications, including:

1. Microcontrollers and microprocessors
2. Memory interfaces
3. Data communication systems
4. Industrial automation
5. Automotive electronics
6. Robotics
7. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as replacements for the SN74HCT244DWRE4 include:

1. 74HC244: Similar functionality, but with TTL logic level shifting
2. SN74LS244: Lower speed, but compatible with TTL logic levels
3. CD74HCT244: Higher speed, but with slightly different pin configuration
4. MC74HCT244A: Improved noise immunity, but with higher power consumption

These alternative models offer similar functionality and can be chosen based on specific requirements and compatibility with existing systems.

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