MC74AC273DT

Flip Flops Overview

The MC74AC273DT is an octal D-type flip-flop from onsemi's 74AC logic series, housed in a 20-SOIC package. It features eight edge-triggered D flip-flops with individual inputs and non-inverting outputs. The device operates within a supply voltage range of 2 V to 6 V and supports a maximum clock frequency of 175 MHz at 5 V. Key electrical parameters include a propagation delay of 9 ns (at 5 V, 50 pF load), static current of 8 µA, and output drive capability of ±24 mA. It includes buffered common clock and asynchronous master reset inputs, functioning as an ideal buffer for MOS microprocessors or memory systems.

Flip Flops Feature Summary

• Contains eight edge-triggered D-type flip-flops with independent data inputs and Q outputs
• Features buffered common Clock (CP) and Master Reset (MR) inputs for simultaneous loading and clearing
• Provides high-output current drive capability of ±24 mA for direct interface applications

Flip Flops Applications

• Buffering signals for MOS microprocessor systems
• Data storage interfaces for memory systems
• Parallel-to-serial conversion circuits
• General-purpose digital logic timing control

Flip Flops Procurement Notes

Verify the specific suffix against official documentation, as 'MC74AC273DT' may represent a variant or legacy designation distinct from the widely documented 'MC74AC273DWR2G'. Confirm package dimensions, lead finish, and RoHS compliance status directly with onsemi or authorized distributors before procurement. Ensure the selected part matches the required operating temperature range and voltage specifications for the target application.

Flip Flops Selection Notes

Select this component when designing systems requiring wide voltage operation between 2 V and 6 V with high-speed performance up to 175 MHz. Choose the SOIC-20 package for surface-mount assembly where moderate pin count and thermal dissipation are balanced. Consider the ±24 mA output drive for driving loads without additional buffering. Verify input compatibility if interfacing with TTL-level signals, noting that AC series inputs may require level shifting compared to ACT variants.

Flip Flops Part Context

This device belongs to the 74AC family, which offers CMOS speed with lower power consumption than earlier bipolar families. It serves as a parallel data storage element, capturing data on the rising edge of the clock signal. The asynchronous master reset allows immediate clearing of all flip-flops regardless of the clock state, providing robust initialization capabilities for digital logic designs.

Flip Flops Replacement Considerations

The MC74AC273DTR2G is a verified reel-pack alternative with identical electrical characteristics. For TTL-compatible inputs, the MC74ACT273 series is a functional substitute. The MM74HCT273WM offers HCT input compatibility but operates strictly at 5 V with slower speeds.