SN74ABT125N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-speed, non-inverting, tri-state
• Package: DIP (Dual In-line Package)
• Essence: Quad bus buffer gate with 3-state outputs
• Packaging/Quantity: Tube packaging, 25 pieces per tube

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
• Output Drive Capability: ±24mA at 5V
• Propagation Delay Time: 2.8ns (typical)

Detailed Pin Configuration

The SN74ABT125N has a total of 14 pins arranged as follows:

__ __ Y1 |1 \__/ 14| VCC A1 |2 13| B1 A2 |3 12| Y2 B2 |4 SN 11| A3 OE1 |5 74 10| B3 GND |6 AB 9 | Y3 Y4 |7 T1 8 | OE2 -- --

Functional Features

• Non-inverting buffer: The SN74ABT125N amplifies and reproduces the input signal without any phase inversion.
• Tri-state outputs: The 3-state outputs allow for high impedance when disabled, enabling multiple devices to share a common bus.
• High-speed operation: With a propagation delay time of only 2.8ns, this IC is suitable for applications requiring fast data transfer.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer. - Tri-state outputs enable bus sharing among multiple devices. - Non-inverting buffer preserves the signal integrity.

Disadvantages: - Limited supply voltage range (4.5V to 5.5V). - Not suitable for applications requiring high output drive capability.

Working Principles

The SN74ABT125N operates as a quad bus buffer gate with 3-state outputs. It takes four input signals (A1, A2, A3, B3) and amplifies them without inverting their logic levels. The outputs (Y1, Y2, Y3, Y4) can be enabled or disabled using the OE1 and OE2 pins, respectively. When disabled, the outputs enter a high impedance state, allowing other devices to drive the bus.

Detailed Application Field Plans

The SN74ABT125N is commonly used in various digital systems where buffering and line driving are required. Some application fields include:

1. Microcontrollers: Used to interface microcontrollers with external devices such as sensors, displays, and memory modules.
2. Communication Systems: Employed in data transmission circuits, ensuring signal integrity during high-speed communication.
3. Industrial Automation: Integrated into control systems to amplify and buffer signals between different components.
4. Automotive Electronics: Utilized in automotive electronics for signal conditioning and level shifting purposes.

Detailed and Complete Alternative Models

1. SN74ABT126N: Similar to SN74ABT125N but with active-low enable inputs.
2. SN74ABT2244A: Octal buffer/line driver with 3-state outputs.
3. SN74ABT16245A: 16-bit bus transceiver with 3-state outputs.

These alternative models offer similar functionality and can be considered based on specific requirements and availability.

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