Overview
The SN74HC21PWR is a dual 4-input positive-AND gate integrated circuit (IC) manufactured by Texas Instruments. It belongs to the 74HC series, which is known for its high-speed CMOS logic and low power consumption. This IC is designed for applications requiring logical AND operations with multiple inputs. It is packaged in a TSSOP-14 form factor, making it suitable for surface-mount technology (SMT). The SN74HC21PWR is widely used in digital logic circuits, industrial automation, and consumer electronics due to its reliability and performance.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Logic Type | AND Gate | - | Dual 4-input |
| Supply Voltage | 2 to 6 | V | - |
| Operating Temperature | -40 to 85 | °C | - |
| Propagation Delay | 19 | ns | @ 6V, 50pF |
| Input Count | 4 | - | Per gate |
| Output Current | 5.2 | mA | High/Low |
| Package | TSSOP-14 | - | Surface Mount |
| Logic Level High | 1.5 to 4.2 | V | - |
| Logic Level Low | 0.5 to 1.8 | V | - |
| Static Current | 2 | µA | Max |
Key Features
- Dual 4-input AND gate functionality for complex logic operations.
- Wide operating voltage range (2V to 6V) for compatibility with various systems.
- Low power consumption, making it ideal for battery-powered devices.
- High-speed operation with a propagation delay of 19ns at 6V.
- Compact TSSOP-14 package for space-constrained applications.
Applications
The SN74HC21PWR is commonly used in digital logic circuits, such as data processing, signal conditioning, and control systems. Its ability to handle multiple inputs makes it suitable for industrial automation, where it can be used in programmable logic controllers (PLCs) and sensor interfacing. Additionally, it is employed in consumer electronics for tasks like keyboard scanning and display driving. Its robust performance and reliability also make it a preferred choice in automotive electronics for signal routing and logic control.
Q & A
1. What is the logic type of SN74HC21PWR?
The SN74HC21PWR is a dual 4-input positive-AND gate.
2. What is the operating voltage range?
The operating voltage range is 2V to 6V.
3. What is the propagation delay at 6V?
The propagation delay is 19ns at 6V with a 50pF load.
4. What is the package type?
It is packaged in a TSSOP-14 form factor.
5. What is the maximum operating temperature?
The maximum operating temperature is 85°C.
6. Is this IC suitable for battery-powered devices?
Yes, its low power consumption makes it ideal for battery-powered devices.
7. What are the typical applications?
Typical applications include digital logic circuits, industrial automation, and consumer electronics.
8. What is the output current capability?
The output current is 5.2mA for both high and low states.
9. Is the SN74HC21PWR RoHS compliant?
Yes, it is RoHS compliant.
10. What is the logic level high range?
The logic level high ranges from 1.5V to 4.2V.
