SN74ALS21ANSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gates
• Characteristics: High-speed, low-power consumption
• Package: SOP (Small Outline Package)
• Essence: Dual 4-input AND gate
• Packaging/Quantity: Tape and Reel, 2500 units per reel

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
• Propagation Delay Time: 9 ns (typical)
• Power Dissipation: 22 mW (typical)

Detailed Pin Configuration

The SN74ALS21ANSR has a total of 14 pins, which are assigned as follows:

1. A1: Input A1
2. B1: Input B1
3. Y1: Output Y1
4. A2: Input A2
5. B2: Input B2
6. Y2: Output Y2
7. GND: Ground
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. VCC: Supply Voltage

Functional Features

• Dual 4-input AND gate with independent inputs and outputs
• High-speed operation allows for efficient signal processing
• Low power consumption makes it suitable for battery-powered devices
• Wide operating temperature range enables usage in various environments
• Compatible with TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic families

Advantages and Disadvantages

Advantages: - High-speed operation improves overall system performance - Low power consumption extends battery life in portable devices - Wide operating temperature range ensures reliability in different conditions - Compatibility with TTL and CMOS logic families simplifies integration into existing systems

Disadvantages: - Limited number of inputs may restrict the complexity of logic functions - SOP package may not be suitable for all applications requiring through-hole mounting

Working Principles

The SN74ALS21ANSR is a dual 4-input AND gate that performs logical AND operations on its input signals. It utilizes transistor-based circuitry to process the inputs and generate the corresponding output signals. The gate operates by comparing the logical states of the input signals and producing a high output only when all inputs are high. Otherwise, the output remains low.

Detailed Application Field Plans

The SN74ALS21ANSR can be used in various applications that require logical AND operations, such as:

1. Digital signal processing systems
2. Microcontrollers and microprocessors
3. Communication equipment
4. Industrial automation
5. Automotive electronics

Detailed and Complete Alternative Models

1. SN74ALS20ANSR: Dual 4-input NAND gate
2. SN74ALS22ANSR: Dual 4-input OR gate
3. SN74ALS30ANSR: 8-input NAND gate
4. SN74ALS32ANSR: Quad 2-input OR gate
5. SN74ALS86ANSR: Quad 2-input XOR gate

These alternative models provide similar functionality but with different logical operations or input/output configurations.

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