Overview
The SN74HC21DE4 is a dual 4-input positive-AND gate integrated circuit produced by Texas Instruments. This product belongs to the HC (High-Speed CMOS) logic family, which is widely used in digital logic applications. The SN74HC21DE4 is designed for high-speed operation and low power consumption, making it suitable for a variety of electronic systems. Its market positioning targets engineers and designers working on digital circuits, embedded systems, and automation applications. The product's unique selling points include its robust performance, compatibility with CMOS and TTL logic levels, and its ability to operate over a wide voltage range.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Logic Type | AND Gate | - | Dual 4-input |
| Supply Voltage | 2 V to 6 V | V | Wide operating range |
| High-Level Output Current | -5.2 | mA | Typical |
| Low-Level Output Current | 5.2 | mA | Typical |
| Propagation Delay Time | 15 | ns | At 5 V |
| Operating Temperature | -40 to 85 | °C | Industrial range |
| Package | SOIC-14 | - | Surface mount |
| Technology | CMOS | - | High-Speed CMOS |
Key Features
- Dual 4-input AND gates for versatile logic operations.
- Wide operating voltage range (2 V to 6 V) for compatibility with various systems.
- Low power consumption, ideal for battery-powered devices.
- High-speed operation with a propagation delay of 15 ns at 5 V.
- CMOS technology ensures compatibility with both CMOS and TTL logic levels.
- Industrial temperature range (-40°C to 85°C) for reliable performance in harsh environments.
Applications
The SN74HC21DE4 is widely used in various digital logic applications, including:
- Industrial automation: For control logic and signal processing.
- Consumer electronics: In devices requiring high-speed logic operations.
- Embedded systems: For interfacing and logic control.
- Automotive electronics: In systems requiring robust and reliable logic gates.
- Telecommunications: For signal conditioning and processing.
Q & A
1. What is the logic type of the SN74HC21DE4?
The SN74HC21DE4 is a dual 4-input positive-AND gate.
2. What is the operating voltage range of the SN74HC21DE4?
The operating voltage range is 2 V to 6 V.
3. What is the propagation delay of the SN74HC21DE4?
The propagation delay is 15 ns at 5 V.
4. Is the SN74HC21DE4 compatible with TTL logic levels?
Yes, it is compatible with both CMOS and TTL logic levels.
5. What is the package type of the SN74HC21DE4?
The package type is SOIC-14.
6. What is the operating temperature range of the SN74HC21DE4?
The operating temperature range is -40°C to 85°C.
7. What is the typical high-level output current?
The typical high-level output current is -5.2 mA.
8. What is the typical low-level output current?
The typical low-level output current is 5.2 mA.
9. What technology is used in the SN74HC21DE4?
It uses High-Speed CMOS technology.
10. What are the typical applications of the SN74HC21DE4?
Typical applications include industrial automation, consumer electronics, embedded systems, automotive electronics, and telecommunications.
