Overview
The SN74AHC138PWR, manufactured by Texas Instruments, is a high-performance 3-to-8 line decoder/demultiplexer. This component is designed to convert three binary-coded inputs into one of eight mutually exclusive outputs, making it a versatile tool in digital circuit design. The SN74AHC138PWR is part of the AHC family, known for its advanced high-speed CMOS technology, which ensures low power consumption and high noise immunity. It is widely used in applications requiring signal routing, address decoding, and data demultiplexing. Its compact TSSOP package makes it suitable for space-constrained designs, targeting industries such as consumer electronics, automotive, and industrial automation.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 2.0 to 5.5 | V | Wide operating range |
| Propagation Delay | 7.5 | ns | Typical at 5V |
| Output Current | ±8 | mA | High drive capability |
| Operating Temperature | -40 to 85 | °C | Industrial range |
| Package | TSSOP-16 | - | Compact footprint |
Key Features
- High-speed operation with minimal propagation delay.
- Low power consumption, ideal for battery-powered devices.
- Wide operating voltage range ensures compatibility with various systems.
- Three enable inputs for flexible control of output states.
- High noise immunity, suitable for industrial environments.
Applications
The SN74AHC138PWR is extensively used in digital systems for address decoding in memory and I/O devices. It is also employed in data routing applications, such as signal demultiplexing in communication systems. In automotive electronics, it aids in controlling multiple subsystems efficiently. Additionally, its robust design makes it suitable for industrial automation, where reliable signal decoding is critical.
Q & A
1. What is the primary function of the SN74AHC138PWR?
It is a 3-to-8 line decoder/demultiplexer that converts three binary inputs into one of eight outputs.
2. What is the operating voltage range of this component?
The operating voltage ranges from 2.0V to 5.5V.
3. How does the SN74AHC138PWR ensure low power consumption?
It utilizes advanced high-speed CMOS technology, which minimizes power usage.
4. What is the typical propagation delay of this decoder?
The typical propagation delay is 7.5 nanoseconds at 5V.
5. What are the three enable inputs used for?
They provide flexible control over the output states, allowing the decoder to be enabled or disabled as needed.
6. What package type does the SN74AHC138PWR come in?
It is available in a TSSOP-16 package, which is compact and suitable for space-constrained designs.
7. What industries commonly use this component?
It is widely used in consumer electronics, automotive, and industrial automation.
8. How does the SN74AHC138PWR handle noise in industrial environments?
It features high noise immunity, ensuring reliable operation in noisy conditions.
9. Can this component be used in battery-powered devices?
Yes, its low power consumption makes it ideal for battery-powered applications.
10. What is the output current capability of the SN74AHC138PWR?
It can source or sink up to ±8mA of current, providing high drive capability.
