Texas Instruments

SN74LS273N  

Flip Flops

SN74LS273N Description

The SN74LS273N is an 8-bit D-type flip-flop with master reset, manufactured by Texas Instruments as part of the 74LS series. Designed for high-speed digital applications, it operates at a clock frequency of 40 MHz and features positive-edge triggering, ensuring reliable data capture on the rising clock edge. With a supply voltage range of 4.75V to 5.25V, it is optimized for 5V TTL logic systems. The device offers a low propagation delay of 27ns at 5V with a 15pF load, making it suitable for timing-critical designs. Packaged in a 20-pin DIP (Dual In-line Package), it is ideal for through-hole mounting in prototyping and industrial applications.

SN74LS273N Features

• 8-bit D-type flip-flop with master reset for synchronous clearing of all outputs.
• Positive-edge triggered clock input for precise timing control.
• High-speed operation: 40 MHz clock frequency and 27ns propagation delay.
• Wide operating temperature range (0°C to 70°C) for robust performance in varied environments.
• Low quiescent current (27 mA) and TTL-compatible outputs (400µA high, 8mA low).
• RoHS3 compliant and REACH unaffected, meeting environmental regulations.
• Through-hole mounting (20DIP) for easy integration into breadboards and legacy systems.

SN74LS273N Applications

The SN74LS273N is widely used in digital systems requiring data storage and synchronization, such as:

• Microprocessor interfacing: Buffering address/data lines in 8-bit systems.
• Register banks: Temporary storage in arithmetic logic units (ALUs) or state machines.
• Control logic: Synchronizing signals in industrial automation and instrumentation.
• Clock distribution networks: Ensuring precise timing in communication systems.
• Legacy equipment repairs: Replacing obsolete flip-flops in vintage computing hardware.

Conclusion of SN74LS273N

The SN74LS273N stands out for its high-speed performance, reliability, and ease of integration in 5V TTL systems. Its master reset capability and edge-triggered design make it superior to basic latches, ensuring glitch-free operation. Whether used in embedded systems, industrial controls, or retro computing, this flip-flop delivers consistent performance with low power consumption. Texas Instruments' reputation for quality further ensures its suitability for demanding and long-lifecycle applications.

SN74LS273N Documents

Download datasheets and manufacturer documentation for SN74LS273N

Datasheets :

SN54(LS)273      

HTML Datasheet :

SN54(LS)273      

PCN Design/Specification :

Copper Wire Base Alternative 23/Apr/2014       Material Set 30/Mar/2017