SN74LS273NG4

Flip Flops Overview

The SN74LS273NG4 is an octal D-type flip-flop from the Texas Instruments 74LS series, housed in a 20-pin PDIP package. It features positive edge triggering and non-inverting outputs with a master reset function. The device operates within a supply voltage range of 4.75 V to 5.25 V. Key electrical parameters include a maximum propagation delay of 27 ns at 5 V with 15 pF load, a clock frequency of 40 MHz, and static current consumption of 27 mA. Output drive capabilities are specified as 8 mA low-level and 400 µA high-level current.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type storage elements in a single integrated circuit.
• Positive edge-triggered operation synchronized by a single clock input for data capture.
• Integrated master reset functionality to initialize all outputs to a defined state.
• Non-inverting output polarity ensuring logical consistency between input data and stored states.

Flip Flops Applications

• Parallel-to-serial data conversion circuits requiring temporary data buffering.
• General-purpose register applications in digital logic systems.
• State holding mechanisms in microprocessor interface designs.

Flip Flops Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific manufacturing date codes against project requirements. Ensure proper handling procedures are followed due to through-hole packaging specifications. Cross-reference datasheet revisions to confirm pinout and electrical characteristics match design specifications before integration.

Flip Flops Selection Notes

Select this component when TTL-compatible logic levels are required for system interoperability. Consider the 20-pin DIP package for prototyping or legacy board layouts. Evaluate power consumption constraints given the 27 mA static current draw compared to CMOS alternatives. Verify that the 4.75 V to 5.25 V operating range aligns with the available power supply infrastructure.

Flip Flops Part Context

This part belongs to the standard 74LS logic family, known for TTL compatibility and moderate speed performance. It serves as a foundational building block for sequential logic design. The 'G4' suffix indicates Green/RoHS-compliant manufacturing. It is distinct from HC or HCT variants which offer different speed and power characteristics.

Flip Flops Replacement Considerations

SN74LS273N is listed as a manufacturer-recommended alternative. Verify pin compatibility and electrical specifications before substitution. Other family members like SN74HC273 require voltage level adjustments.