SN74HCT244DBR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-speed, CMOS compatible, 3-state outputs
• Package: SSOP-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
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 74 MHz
• Number of Channels: 8
• Output Current: ±6mA
• Propagation Delay Time: 13 ns (typical)

Detailed Pin Configuration

The SN74HCT244DBR has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

• Non-inverting buffer with 3-state outputs
• High-speed operation suitable for various applications
• CMOS compatible inputs for easy interfacing with other devices
• 3-state outputs allow multiple devices to share a common bus

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - CMOS compatibility ensures easy integration with other components - 3-state outputs provide flexibility in bus sharing applications

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

Working Principles

The SN74HCT244DBR is a non-inverting buffer with 3-state outputs. It operates by amplifying the input signals and providing an identical output signal, maintaining the same logic level as the input. The 3-state outputs allow the device to be effectively disconnected from the bus when not in use, preventing interference with other devices connected to the same bus.

Detailed Application Field Plans

The SN74HCT244DBR is commonly used in various applications, including:

1. Data communication systems
2. Memory interfaces
3. Address decoding circuits
4. Bus drivers
5. Clock distribution networks

Detailed and Complete Alternative Models

Some alternative models that can be considered as replacements for the SN74HCT244DBR are:

1. SN74HCT244N - DIP-20 package, through-hole mounting
2. SN74HCT244PW - TSSOP-20 package, surface-mount technology
3. SN74HCT244D - SOIC-20 package, surface-mount technology

These alternatives offer similar functionality and characteristics, but differ in package type and mounting options.

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