SN74LS273NS

Flip Flops Overview

The SN74LS273NS is an octal D-type flip-flop manufactured by Texas Instruments, belonging to the 74LS logic series. It features eight independent D-type flip-flops with a common positive-edge-triggered clock input and a master clear input. The device utilizes TTL-compatible inputs and outputs, housed in a 20-pin Small Outline (SO) package designed for surface-mount applications. Key electrical specifications include a propagation delay of 27 ns, a maximum operating frequency of 35 MHz, and a supply voltage range of 4.75 V to 5.25 V. Output drive capabilities specify a low-level output current of 8 mA and a high-level output current of -0.4 mA.

Flip Flops Feature Summary

• Contains eight independent D-type flip-flops with positive-edge triggering
• Features a common master clear input for synchronous reset functionality
• Provides TTL-compatible input and output interfaces
• Delivers standard low-level output current drive capability

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• General-purpose register storage applications
• Shift register configurations
• Buffer memory implementations in digital systems

Flip Flops Procurement Notes

Verify that the specific part number suffix corresponds to the SOIC-20 surface-mount package configuration rather than through-hole variants. Confirm compatibility with standard 5V logic levels and ensure the manufacturer source aligns with Texas Instruments specifications for the 74LS family performance characteristics.

Flip Flops Selection Notes

Select this component when eight-bit parallel data storage with a single control line is required in surface-mount designs. Consider the 27 ns propagation delay and 35 MHz frequency limit against system timing requirements. Evaluate the 8 mA sink current capacity for load driving needs compared to higher-drive alternatives like the ABT or ALS series if stronger output performance is necessary.

Flip Flops Part Context

This component is part of the widely adopted 74LS273 family, representing a standard solution for octal latching in legacy and mixed-signal digital electronics. It serves as a fundamental building block for sequential logic circuits requiring multiple synchronized data storage elements within a single integrated circuit package.

Flip Flops Replacement Considerations

• SN74LS273N
• SN74LS273DR
• SN74LS273NSR