74ACT273SC Equivalent & Substitute Parts

Part Overview

The 74ACT273SC is a D-Type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit configuration and positive edge triggering. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The 20-SOIC surface mount package maintains consistent form factor across available alternatives.

Substiute Parts

74ACT273SC

onsemiIn Stock: 468974ACT273SC Datasheet

Current PartRFQ

MC74ACT273DWG

onsemiIn Stock: 2296MC74ACT273DWG Datasheet

DirectRFQ

MC74ACT273DWR2G

onsemiIn Stock: 2342MC74ACT273DWR2G Datasheet

SimilarRFQ

CD74ACT273M96

Texas InstrumentsIn Stock: 1481CD74ACT273M96 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT273SC is determined by strict equivalence across the following parameters: D-Type flip-flop function with master reset capability, 1 element with 8-bit configuration, non-inverted output type, positive edge triggering, 20-SOIC package format, 4.5V to 5.5V supply voltage range, 24mA output current capability (both high and low), and surface mount mounting type. All identified substitutes maintain these core electrical and mechanical specifications. Variations in clock frequency, propagation delay, quiescent current, input capacitance, and operating temperature range do not preclude functional substitution within the defined parameter set.

Parameter Comparison

Engineering Selection Recommendations

MC74ACT273DWG and MC74ACT273DWR2G are direct onsemi substitutes with active product status and ROHS3 compliance. Both maintain identical electrical specifications with improved quiescent current performance (8 µA versus 40 µA). The primary distinction is packaging format: MC74ACT273DWG is supplied in tube packaging, while MC74ACT273DWR2G is supplied in tape and reel format for automated assembly environments.

CD74ACT273M96 from Texas Instruments provides an alternative from a different manufacturer with active product status and ROHS3 compliance. This part features extended operating temperature range (-55°C to 125°C) and unlimited moisture sensitivity level, suitable for applications requiring broader environmental specifications. Clock frequency is reduced to 80 MHz with corresponding propagation delay increase to 14.6ns and input capacitance increase to 10 pF.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT273DWG replace 74ACT273SC in existing designs? A: Yes. Both parts share identical D-Type flip-flop function, 8-bit configuration, positive edge triggering, 20-SOIC package, supply voltage range, and output current specifications. MC74ACT273DWG is actively manufactured and ROHS3 compliant.

Q: What is the difference between MC74ACT273DWG and MC74ACT273DWR2G? A: Both are electrically identical onsemi parts with identical specifications. The difference is packaging: MC74ACT273DWG uses tube packaging for manual handling, while MC74ACT273DWR2G uses tape and reel format for automated pick-and-place assembly.

Q: Is CD74ACT273M96 suitable as a substitute? A: CD74ACT273M96 maintains all core functional and electrical parameters required for substitution. It offers extended operating temperature range (-55°C to 125°C) and unlimited moisture sensitivity. Clock frequency is lower (80 MHz versus 189-200 MHz) and propagation delay is higher (14.6ns versus 8.5-11ns), which may impact timing-critical applications.

Q: Are all substitutes in the same 20-SOIC package? A: Yes. All parts use 20-SOIC (0.295", 7.50mm Width) surface mount package, ensuring mechanical compatibility with existing PCB layouts.

Q: What compliance certifications apply to these substitutes? A: MC74ACT273DWG, MC74ACT273DWR2G, and CD74ACT273M96 are all ROHS3 compliant and REACH unaffected. All carry EAR99 ECCN classification and 8542.39.0001 HTSUS code.