MC74ACT273DTR2

Flip Flops Overview

The MC74ACT273DTR2G is an octal D-type flip-flop from the 74ACT logic series, manufactured by onsemi. It integrates eight edge-triggered D-type flip-flops with individual data inputs and Q outputs within a single package. The device features a common buffered clock input and a buffered asynchronous master reset input to simultaneously load or clear all flip-flops. Designed for high-speed applications, it operates with a propagation delay of 11 ns at 5 V. The component supports a supply voltage range of 4.5 V to 5.5 V and provides strong output drive capabilities, sourcing and sinking 24 mA. It is housed in a 20-pin SOIC package.

Flip Flops Feature Summary

• Integrates eight edge-triggered D-type flip-flops with independent data inputs and non-inverting outputs
• Features buffered common clock and asynchronous master reset inputs for simultaneous control
• Provides TTL-compatible inputs for direct interfacing with TTL logic systems
• Delivers high-current output drive capability suitable for bus structures

Flip Flops Applications

• Register files in microprocessor-based systems
• Data storage buffers for memory interfaces
• Shift registers for serial-to-parallel conversion
• Timing circuits requiring precise clock synchronization

Flip Flops Procurement Notes

Verify the complete part number includes the 'G' suffix (MC74ACT273DTR2G) to confirm lead-free packaging compliance. Confirm the 'TR2' suffix indicates tape-and-reel packaging rather than tube packaging. Ensure the operating environment remains within the specified -40°C to +85°C temperature range. Validate that the system power supply strictly adheres to the 4.5 V to 5.5 V limits to prevent device damage.

Flip Flops Selection Notes

Select this component when an octal register with TTL-compatible inputs is required. Choose this over the AC variant if specific input voltage thresholds matching TTL standards are necessary. Consider the ACT series for improved noise immunity compared to standard LS logic. Verify that the 20-pin SOIC package fits the available PCB footprint constraints.

Flip Flops Part Context

This component belongs to the 74ACT family, which bridges the performance gap between older TTL logic and newer CMOS technologies. It offers speed comparable to Schottky TTL while maintaining lower power consumption typical of CMOS devices. The octal configuration allows for efficient handling of wide data buses, reducing the component count required for 8-bit data paths in digital designs.

Flip Flops Replacement Considerations

The MC74ACT273MG is a pin-compatible alternative in a tube package. The MC74AC273DTR2G serves as a functional substitute but lacks TTL-compatible inputs. Cross-vendor equivalents such as the CD74ACT273M96 may be considered if supply chain diversification is required.