onsemi

74HC138DTR2G

74HC138DTR2G Description

The 74HC138DTR2G is a high-performance, 3-to-8 line decoder/demultiplexer IC from the 74HC series, manufactured by onsemi. This logic IC chip is designed for surface-mount applications and features a single supply voltage range of 2V to 6V. It is housed in a 16-TSSOP package and comes in a tape and reel (TR) format, making it suitable for automated assembly processes. The 74HC138DTR2G is classified under ECCN EAR99 and HTSUS 8542.39.0001, indicating its compliance with international trade regulations. Despite being marked as obsolete, it remains a reliable choice for specific applications due to its robust performance and compatibility with existing systems.

74HC138DTR2G Features

• Circuit Configuration: The 74HC138DTR2G features a 1 x 3:8 decoder/demultiplexer circuit, providing eight independent output lines from three input lines. This configuration allows for efficient signal distribution and decoding in various electronic systems.
• Single Supply Operation: It operates on a single supply voltage ranging from 2V to 6V, making it versatile for applications with varying power supply requirements. This wide voltage range ensures compatibility with different power sources and reduces the need for additional voltage regulation components.
• Output Current Capability: The IC can provide up to 5.2mA for both high and low output states, ensuring robust signal integrity and driving capability for downstream components.
• Moisture Sensitivity Level: With an MSL rating of 1 (unlimited), the 74HC138DTR2G is highly resistant to moisture, making it suitable for use in a wide range of environmental conditions without the need for special handling or storage precautions.
• Compliance and Status: The 74HC138DTR2G is REACH unaffected, ensuring compliance with environmental and health regulations. This status is crucial for manufacturers aiming to meet stringent regulatory standards.

74HC138DTR2G Applications

The 74HC138DTR2G is ideal for a variety of applications where efficient signal decoding and demultiplexing are required. Some specific use cases include:

• Digital Systems: In digital circuits where multiple output lines need to be controlled by a smaller number of input lines, the 74HC138DTR2G provides a compact and efficient solution.
• Memory Address Decoding: It can be used to decode memory addresses in microcontroller or microprocessor systems, enabling precise control over memory access and data retrieval.
• Control Systems: In control systems where multiple output signals need to be generated based on input conditions, the decoder/demultiplexer function of the 74HC138DTR2G simplifies circuit design and enhances reliability.
• Communication Interfaces: For applications involving data transmission and reception, the 74HC138DTR2G can be used to manage signal routing and decoding, ensuring accurate data handling.

Conclusion of 74HC138DTR2G

The 74HC138DTR2G is a versatile and reliable decoder/demultiplexer IC that offers significant advantages in terms of performance, compatibility, and environmental resilience. Despite its obsolete status, it remains a valuable component for specific applications where its unique features and wide voltage range are essential. Its robust output current capability, single supply operation, and moisture resistance make it a preferred choice for engineers and designers working on digital systems, memory decoding, control systems, and communication interfaces.