Overview
The SN74LS21NS is a dual 4-input positive-AND gate integrated circuit produced by Texas Instruments. It belongs to the LS (Low-Power Schottky) series of logic chips, designed for high-speed, low-power digital logic applications. This component is widely used in digital systems for logical operations, signal processing, and control functions. Its compact SOP-14 package and reliable performance make it suitable for various industrial, automotive, and consumer electronics applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Installation Method | Surface Mount | - | SOP-14 package |
| Pin Count | 14 | - | - |
| Supply Voltage | 4.75V ~ 5.25V | V | Standard TTL logic levels |
| Output Current | 8.00 | mA | High-level output current |
| Number of Gates | 2 | - | Dual 4-input AND gates |
| Propagation Delay | 20.0 | ns | Typical value |
| Logic Family | LS | - | Low-Power Schottky |
| Operating Temperature | 0°C ~ 70°C | °C | Commercial grade |
Key Features
- Dual 4-input positive-AND gates for versatile logic operations.
- Low power consumption with high-speed performance.
- Wide operating voltage range (4.75V to 5.25V).
- Compact SOP-14 package for space-efficient designs.
- Compatible with standard TTL logic levels.
Applications
The SN74LS21NS is commonly used in digital systems for logical operations, such as signal processing, data routing, and control functions. It is suitable for applications in industrial automation, automotive electronics, and consumer electronics. Its reliability and performance make it ideal for systems requiring high-speed logic with low power consumption.
Q & A
1. What is the operating voltage range of the SN74LS21NS?
The operating voltage range is 4.75V to 5.25V.
2. What is the propagation delay of this component?
The typical propagation delay is 20 ns.
3. How many logic gates are included in the SN74LS21NS?
It includes two 4-input positive-AND gates.
4. What is the package type of the SN74LS21NS?
It comes in an SOP-14 package.
5. Is the SN74LS21NS compatible with TTL logic levels?
Yes, it is fully compatible with standard TTL logic levels.
6. What is the maximum output current of the SN74LS21NS?
The maximum output current is 8 mA.
7. What is the operating temperature range of this component?
The operating temperature range is 0°C to 70°C.
8. Can the SN74LS21NS be used in automotive applications?
Yes, it is suitable for automotive electronics due to its reliability and performance.
9. What is the logic family of the SN74LS21NS?
It belongs to the LS (Low-Power Schottky) logic family.
10. Is the SN74LS21NS RoHS compliant?
Yes, it is RoHS compliant and lead-free.
