STMicroelectronics

M74HC238B1R

M74HC238B1R Description

The M74HC238B1R is a 1 x 3:8 decoder/demultiplexer IC, part of the 74HC series, manufactured by STMicroelectronics. This through-hole mounted device is designed for single supply operation, with a voltage supply range of 2V to 6V. It features one independent circuit and is housed in a tube package. The M74HC238B1R is rated for a maximum output current of 5.2mA for both high and low states, ensuring robust performance in various applications. Despite its obsolescence, the M74HC238B1R remains a reliable choice for specific legacy systems and applications where its unique features are still highly valued. It complies with REACH and ROHS3 standards, indicating its environmental safety and suitability for modern manufacturing processes.

M74HC238B1R Features

• Circuit Configuration: The M74HC238B1R features a 1 x 3:8 decoder/demultiplexer circuit, enabling the conversion of 3-bit binary input to 8 output lines. This configuration is ideal for applications requiring efficient signal routing and decoding.
• Single Supply Operation: With a voltage supply range of 2V to 6V, the M74HC238B1R offers flexibility in power supply options, making it suitable for a wide range of electronic systems.
• High Output Current Capability: The device supports a maximum output current of 5.2mA for both high and low states, ensuring reliable performance even under demanding conditions.
• Through-Hole Mounting: The through-hole mounting type ensures secure and stable installation, making it suitable for applications where mechanical robustness is critical.
• Environmental Compliance: The M74HC238B1R is REACH unaffected and ROHS3 compliant, highlighting its suitability for modern manufacturing processes and environmental regulations.
• Moisture Sensitivity Level: With an MSL rating of 1 (unlimited), the device is highly resistant to moisture, ensuring long-term reliability and performance in various environmental conditions.

M74HC238B1R Applications

The M74HC238B1R is well-suited for a variety of applications where efficient signal decoding and demultiplexing are required. Some specific use cases include:

• Digital Systems: Ideal for use in digital systems where multiple signals need to be efficiently routed and decoded, such as in microcontroller interfacing and digital signal processing.
• Memory Address Decoding: The 1 x 3:8 decoding capability makes it suitable for memory address decoding in computer systems and embedded devices.
• Control Systems: The robust output current capability and single supply operation make it ideal for control systems where reliable signal transmission and decoding are critical.
• Legacy Systems: Despite its obsolescence, the M74HC238B1R remains a valuable component for maintaining and upgrading legacy systems where its specific features are still required.

Conclusion of M74HC238B1R

The M74HC238B1R, manufactured by STMicroelectronics, is a versatile and reliable decoder/demultiplexer IC with a 1 x 3:8 circuit configuration. Its single supply operation, high output current capability, and through-hole mounting type make it suitable for a wide range of applications, particularly in digital systems, memory address decoding, and control systems. The device's environmental compliance and moisture resistance further enhance its suitability for modern manufacturing processes and demanding operational environments. While the M74HC238B1R is now obsolete, it continues to offer unique advantages and remains a valuable component for specific applications and legacy systems.