SN74AC240DBR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gate
• Characteristics: Octal Buffer/Line Driver with 3-State Outputs
• Package: SSOP-20
• Essence: The SN74AC240DBR is a high-speed octal buffer and line driver with 3-state outputs. It is designed to be used as a memory address driver, clock driver, or bus-oriented transmitter/receiver.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 6 V
• High-Level Input Voltage: 2 V to VCC + 0.5 V
• Low-Level Input Voltage: -0.5 V to 0.8 V
• High-Level Output Current: -24 mA
• Low-Level Output Current: 24 mA
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The SN74AC240DBR has a total of 20 pins arranged in a SSOP package. The pin configuration is as follows:

1. A1
2. Y1
3. A2
4. Y2
5. A3
6. Y3
7. A4
8. Y4
9. GND
10. Y5
11. A5
12. Y6
13. A6
14. Y7
15. A7
16. Y8
17. OE#
18. VCC
19. B1
20. B2

Functional Features

• Octal buffer and line driver with 3-state outputs
• Non-inverting outputs
• High-speed operation
• 3-state outputs for bus-oriented applications
• Inputs are TTL compatible
• Outputs can drive up to 24 mA

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transmission - 3-state outputs enable bus-oriented applications - Non-inverting outputs simplify circuit design

Disadvantages: - Limited supply voltage range (2 V to 6 V) - Operating temperature range may not be suitable for extreme environments

Working Principles

The SN74AC240DBR operates as an octal buffer and line driver. It takes input signals from the A1-A7 pins and provides corresponding output signals on the Y1-Y8 pins. The OE# pin is used to enable or disable the outputs. When the OE# pin is high, the outputs are in a high-impedance state.

The inputs are TTL compatible, allowing easy integration with other logic circuits. The non-inverting outputs ensure that the output signal matches the input signal polarity.

Detailed Application Field Plans

The SN74AC240DBR can be used in various applications, including:

1. Memory address drivers: The IC can be used to drive memory address lines in microcontrollers and other digital systems.
2. Clock drivers: It can be utilized to drive clock signals in synchronous systems, ensuring accurate timing.
3. Bus-oriented transmitters/receivers: The 3-state outputs make it suitable for bidirectional data transmission in bus architectures.

Detailed and Complete Alternative Models

1. SN74ACT240: Similar octal buffer/line driver with 3-state outputs, but operates at higher speed and has a wider supply voltage range.
2. SN74HC240: Octal buffer/line driver with 3-state outputs designed for high-speed CMOS logic applications.
3. SN74LVC240A: Octal buffer/line driver with 3-state outputs featuring low-voltage CMOS technology for reduced power consumption.

These alternative models offer similar functionality to the SN74AC240DBR but may have different specifications and characteristics.

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