Overview
The SN74HC166DRE4 is an 8-bit parallel-load shift register produced by Texas Instruments. It belongs to the 74HC series and is designed for applications requiring serial-to-parallel or parallel-to-serial data conversion. This IC is housed in a 16-pin SOIC package and is widely used in digital logic circuits due to its reliability and efficiency. Its market positioning targets engineers and designers in industries such as industrial automation, consumer electronics, and automotive systems. The SN74HC166DRE4 stands out for its wide operating voltage range, low power consumption, and high-speed performance, making it a competitive choice for shift register applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Logic Type | Shift Register | - | 8-bit parallel-load |
| Output Type | Standard | - | CMOS compatible |
| Operating Voltage | 2 to 6 | V | Wide range |
| Propagation Delay | 13 | ns | Typical at 5V |
| Power Consumption | 80 | µA | Maximum ICC |
| Operating Temperature | -40 to +85 | °C | Industrial range |
| Package | SOIC-16 | - | Surface mount |
| Input Lines | 9 | - | Including clock |
| Output Lines | 1 | - | Serial output |
| Load Capacity | 10 LSTTL | - | High drive capability |
Key Features
- Wide operating voltage range of 2V to 6V, suitable for various digital systems.
- Low power consumption with a maximum ICC of 80µA, ideal for battery-powered applications.
- High-speed performance with a typical propagation delay of 13ns at 5V.
- Synchronous parallel load and serial shift operations for flexible data handling.
- Direct overriding clear function for immediate reset capability.
- CMOS technology ensures high noise immunity and compatibility with TTL logic levels.
Applications
The SN74HC166DRE4 is commonly used in digital systems requiring serial-to-parallel or parallel-to-serial data conversion. Its primary applications include:
- Industrial Automation: Used in control systems for data acquisition and signal processing.
- Consumer Electronics: Integrated into devices like printers, scanners, and remote controls for data handling.
- Automotive Systems: Employed in vehicle control units for sensor data processing and communication.
- Embedded Systems: Utilized in microcontroller-based projects for efficient data transfer.
Q & A
1. What is the operating voltage range of the SN74HC166DRE4?
The operating voltage range is 2V to 6V.
2. What is the typical propagation delay of this IC?
The typical propagation delay is 13ns at 5V.
3. Can this IC drive TTL loads?
Yes, it can drive up to 10 LSTTL loads.
4. What is the maximum power consumption of the SN74HC166DRE4?
The maximum ICC is 80µA.
5. What package does this IC come in?
It is available in a 16-pin SOIC package.
6. Is the SN74HC166DRE4 suitable for automotive applications?
Yes, it is suitable for automotive systems due to its robust design and wide operating temperature range.
7. Does this IC support synchronous loading?
Yes, it supports synchronous parallel load and serial shift operations.
8. What is the input current of the SN74HC166DRE4?
The maximum input current is 1µA.
9. Can this IC be used in battery-powered devices?
Yes, its low power consumption makes it ideal for battery-powered applications.
10. What is the function of the clear input?
The clear input allows for immediate reset of the shift register, overriding all other operations.
