Encyclopedia Entry: 74ABT640DB,112

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Buffer/Line Driver
• Characteristics: High-speed, low-power, non-inverting, tri-state output
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Buffering and driving digital signals in electronic circuits
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: ABT
• Number of Buffers/Drivers: 8
• Input Voltage Range: 2V to 5.5V
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 125 MHz
• Propagation Delay Time: 3.5 ns (typical)
• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. OE (Output Enable) - Active Low Output Enable
2. A0 - Input for Buffer 0
3. A1 - Input for Buffer 1
4. A2 - Input for Buffer 2
5. A3 - Input for Buffer 3
6. A4 - Input for Buffer 4
7. A5 - Input for Buffer 5
8. A6 - Input for Buffer 6
9. A7 - Input for Buffer 7
10. GND - Ground
11. B0 - Output for Buffer 0
12. B1 - Output for Buffer 1
13. B2 - Output for Buffer 2
14. B3 - Output for Buffer 3
15. B4 - Output for Buffer 4
16. B5 - Output for Buffer 5
17. B6 - Output for Buffer 6
18. B7 - Output for Buffer 7
19. VCC - Supply Voltage

Functional Features

• Non-inverting buffer/driver with tri-state outputs
• High-speed operation suitable for bus-oriented applications
• Provides buffering and driving capabilities for digital signals
• Output enable input allows the device to be placed in a high-impedance state

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data transfer
• Low-power consumption for energy-efficient designs
• Tri-state outputs allow multiple devices to share a common bus
• Wide operating voltage range provides flexibility in various applications

Disadvantages

• Limited number of buffers/drivers (8 in this case)
• Requires external pull-up resistors for proper operation in some cases

Working Principles

The 74ABT640DB,112 is a non-inverting buffer/driver IC that amplifies and drives digital signals. It operates by receiving input signals on the A0-A7 pins and providing amplified output signals on the B0-B7 pins. The OE pin controls the output enable function, allowing the device to be either active or in a high-impedance state.

Detailed Application Field Plans

• Data communication systems
• Address decoding circuits
• Memory interfacing
• Bus-oriented systems
• Microcontroller-based projects

Alternative Models

• 74ABT640D,112: Similar specifications and features, but available in different package options (e.g., TSSOP, PDIP)
• 74ACT640: Compatible alternative from a different logic family (ACT)

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