SN74ALS240ADBR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gate Buffer/Driver
• Characteristics: High-speed, low-power, TTL-compatible
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Buffer/driver for digital signals
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 4.5V to 5.5V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 9ns (typical)
• Output Current: ±24mA
• Input Capacitance: 3pF
• Output Capacitance: 15pF

Detailed Pin Configuration

The SN74ALS240ADBR has a 20-pin configuration as follows:

1. GND (Ground)
2. A1 (Input A1)
3. B1 (Input B1)
4. Y1 (Output Y1)
5. A2 (Input A2)
6. B2 (Input B2)
7. Y2 (Output Y2)
8. A3 (Input A3)
9. B3 (Input B3)
10. Y3 (Output Y3)
11. A4 (Input A4)
12. B4 (Input B4)
13. Y4 (Output Y4)
14. OE (Output Enable)
15. GND (Ground)
16. VCC (Supply Voltage)
17. B5 (Input B5)
18. A5 (Input A5)
19. Y5 (Output Y5)
20. GND (Ground)

Functional Features

• The SN74ALS240ADBR is an octal buffer/driver designed to improve the performance and density of digital systems.
• It provides non-inverting buffers with 3-state outputs, allowing multiple devices to be connected to a common bus.
• The device is TTL-compatible, ensuring compatibility with existing logic families.
• It operates at high speeds with low power consumption, making it suitable for various applications.

Advantages and Disadvantages

Advantages: - High-speed operation - Low-power consumption - TTL-compatible - 3-state outputs for bus sharing

Disadvantages: - Limited output current capacity - Requires external pull-up resistors for proper operation

Working Principles

The SN74ALS240ADBR acts as a buffer/driver for digital signals. It takes input signals from the A1-A5 and B1-B5 pins and amplifies them to provide output signals on the Y1-Y5 pins. The OE pin controls the output enable/disable function. When OE is low, the outputs are active, and when OE is high, the outputs are in a high-impedance state.

Detailed Application Field Plans

The SN74ALS240ADBR can be used in various applications, including: - Data communication systems - Microprocessor-based systems - Memory address drivers - Clock drivers - Bus interface drivers

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the SN74ALS240ADBR are: - SN74LS240: Similar functionality but operates at a lower speed. - SN74HC240: CMOS-compatible version with higher speed and lower power consumption. - SN74ACT240: Faster and more power-efficient version compatible with both TTL and CMOS logic families.

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