onsemi

DM74LS251N  

Encoders, Decoders, Multiplexers & Demultiplexers

DM74LS251N Description

The DM74LS251N is a multiplexer integrated circuit (IC) belonging to the 74LS series, manufactured by onsemi. This 1 x 8:1 multiplexer is designed to select one of eight input signals and forward it to a single output line based on the control inputs. It operates within a voltage supply range of 4.75V to 5.25V and is suitable for a wide range of digital applications. The DM74LS251N features a through-hole mounting type, making it ideal for use in printed circuit boards (PCBs) that require robust physical connections. The operating temperature range of 0°C to 70°C ensures reliable performance in various environmental conditions. This IC is housed in a tube package and is currently marked as obsolete, though it remains a valuable component for legacy systems and specific applications.

DM74LS251N Features

• Multiplexing Capability: The DM74LS251N offers a 1 x 8:1 multiplexing function, allowing for efficient signal selection and routing.
• Single Supply Operation: It operates on a single supply voltage, simplifying power requirements and reducing complexity in power management.
• Output Current Capability: The IC can provide an output high current of 2.6mA and an output low current of 24mA, ensuring robust signal transmission.
• Wide Operating Temperature Range: With an operating temperature range of 0°C to 70°C, it is suitable for applications in diverse environments.
• Through-Hole Mounting: The through-hole mounting type ensures strong mechanical stability and is ideal for applications requiring physical durability.
• Compliance and Status: The DM74LS251N is REACH unaffected and classified under ECCN EAR99, ensuring compliance with international regulations.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), the IC is highly resistant to moisture, enhancing its reliability in humid conditions.

DM74LS251N Applications

The DM74LS251N is particularly well-suited for applications requiring efficient signal selection and routing. Some specific use cases include:

• Data Routing: In digital systems where multiple data sources need to be selectively routed to a single destination, such as in microcontroller interfacing.
• Communication Systems: For selecting and transmitting data streams in communication protocols, ensuring reliable signal transmission.
• Test and Measurement Equipment: In devices that require the selection of different input signals for analysis or processing.
• Industrial Control Systems: For routing control signals in industrial automation and robotics, where reliability and durability are paramount.

Conclusion of DM74LS251N

The DM74LS251N is a versatile multiplexer IC that offers reliable performance in a wide range of applications. Its single supply operation, robust output current capability, and wide operating temperature range make it an excellent choice for various digital systems. Despite being marked as obsolete, the DM74LS251N remains a valuable component for legacy systems and specific applications where its unique features and advantages are crucial. Its compliance with international regulations and high moisture sensitivity level further enhance its reliability and suitability for diverse environments.

DM74LS251N Documents

Download datasheets and manufacturer documentation for DM74LS251N

Datasheets :

DM74LS251      

HTML Datasheet :

DM74LS251      

Environmental Information :

onsemi RoHS