Overview
The SN74HC21DG4 is a dual 4-input positive-AND gate IC manufactured by Texas Instruments. It belongs to the 74HC series of high-speed CMOS logic devices, designed for general-purpose digital logic applications. This product is ideal for engineers and designers working on embedded systems, industrial automation, and consumer electronics. Its compact design, low power consumption, and high-speed operation make it a competitive choice for logic gate implementations.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 2 to 6 | V | Operating range |
| Input Voltage | 0 to VCC | V | Maximum input voltage |
| Output Current | ±5.2 | mA | Maximum output current |
| Propagation Delay | 15 | ns | Typical at 5V |
| Operating Temperature | -40 to 85 | °C | Industrial range |
| Package | SOIC-14 | - | Surface mount |
| Logic Family | HC | - | High-speed CMOS |
Key Features
- Dual 4-input AND gate functionality in a single IC.
- Wide operating voltage range (2V to 6V) for flexibility in various applications.
- Low power consumption, making it suitable for battery-powered devices.
- High noise immunity for reliable operation in noisy environments.
- Compact SOIC-14 package for space-constrained designs.
Applications
The SN74HC21DG4 is widely used in digital logic circuits, including:
- Industrial Automation: Control systems and signal processing.
- Consumer Electronics: Remote controls, gaming devices, and home appliances.
- Embedded Systems: Microcontroller-based projects and prototyping.
- Automotive Electronics: Sensor interfacing and signal conditioning.
Q & A
1. What is the operating voltage range of the SN74HC21DG4?
The operating voltage range is 2V to 6V.
2. What is the typical propagation delay of this IC?
The typical propagation delay is 15 ns at 5V.
3. Is the SN74HC21DG4 suitable for automotive applications?
Yes, it can be used in automotive electronics for signal conditioning and interfacing.
4. What is the maximum output current of the IC?
The maximum output current is ±5.2 mA.
5. What package does the SN74HC21DG4 come in?
It comes in an SOIC-14 surface-mount package.
6. Can this IC operate in extreme temperatures?
Yes, it operates in the temperature range of -40°C to 85°C.
7. What is the logic family of the SN74HC21DG4?
It belongs to the high-speed CMOS (HC) logic family.
8. How many AND gates are included in this IC?
It contains two 4-input AND gates.
9. Is the SN74HC21DG4 suitable for low-power applications?
Yes, its low power consumption makes it ideal for battery-powered devices.
10. What are the typical applications of this IC?
Typical applications include industrial automation, consumer electronics, embedded systems, and automotive electronics.
