Overview
The SN74HC21DT is a dual 4-input AND gate integrated circuit manufactured by Texas Instruments. It belongs to the 74HC series of CMOS logic ICs, known for their high-speed operation and low power consumption. This surface-mount device is housed in a SOIC-14 package and is designed for applications requiring reliable logic operations with a wide operating voltage range of 2V to 6V. The SN74HC21DT is ideal for use in digital systems where precise logic functions are essential.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Type | Dual 4-input AND Gate | - | - |
| Installation | Surface Mount | - | - |
| Pin Count | 14 | - | SOIC-14 |
| Supply Voltage | 2.00V ~ 6.00V | V | - |
| Output Current | 5.2 | mA | - |
| Number of Circuits | 2 | - | - |
| Propagation Delay Time | 140 | ns | - |
| Logic Gate Count | 2 | - | - |
| Input Count | 4 | - | - |
| Operating Temperature | -40℃ ~ 85℃ | ℃ | - |
| Length | 8.65 | mm | - |
| Width | 3.91 | mm | - |
| Height | 1.58 | mm | - |
Key Features
- High-speed CMOS logic operation.
- Wide operating voltage range (2V to 6V).
- Low power consumption compared to LSTTL logic.
- Dual 4-input AND gate functionality.
- Surface-mount SOIC-14 package for compact designs.
Applications
The SN74HC21DT is widely used in digital systems and embedded applications where reliable logic operations are required. Typical applications include industrial automation, consumer electronics, automotive electronics, and telecommunications. Its ability to operate over a wide voltage range and its low power consumption make it suitable for battery-powered devices and energy-efficient systems.
Q & A
1. What is the operating voltage range of the SN74HC21DT?
The SN74HC21DT operates within a voltage range of 2V to 6V.
2. What is the package type of the SN74HC21DT?
It is available in a SOIC-14 surface-mount package.
3. How many AND gates are included in the SN74HC21DT?
The SN74HC21DT contains two 4-input AND gates.
4. What is the maximum propagation delay of the SN74HC21DT?
The maximum propagation delay is 140 ns.
5. What is the operating temperature range of the SN74HC21DT?
It can operate in temperatures ranging from -40℃ to 85℃.
6. Is the SN74HC21DT compatible with CMOS logic?
Yes, it is compatible with CMOS logic inputs and outputs.
7. What is the output current capability of the SN74HC21DT?
The output current is 5.2 mA.
8. Can the SN74HC21DT be used in automotive applications?
Yes, it is suitable for automotive electronics due to its robust design and wide operating voltage range.
9. What is the logic type of the SN74HC21DT?
It is a dual 4-input AND gate.
10. Is the SN74HC21DT RoHS compliant?
Yes, it is RoHS compliant, making it suitable for environmentally conscious designs.
