CD74ACT273PWR Equivalent & Substitute Parts

Part Overview

The CD74ACT273PWR is an active D-type flip-flop logic integrated circuit manufactured by Texas Instruments. This 8-bit positive edge-triggered flip-flop with master reset functionality is designed for digital logic applications requiring synchronous data storage and transfer. The device is in active production status and widely used in industrial, consumer, and embedded system designs. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and cost optimization while maintaining functional and electrical compatibility.

Substiute Parts

CD74ACT273PWR

Texas InstrumentsIn Stock: 17179CD74ACT273PWR Datasheet

Current PartRFQ

MC74ACT273DTR2G

onsemiIn Stock: 9875MC74ACT273DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD74ACT273PWR are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Base product number (74ACT273) ensures identical logic function and pin configuration
• Package type (20-TSSOP) guarantees mechanical and thermal compatibility
• Supply voltage range (4.5V ~ 5.5V) confirms operational voltage compatibility
• Trigger type (Positive Edge) and output type (Non-Inverted) ensure functional equivalence
• Number of elements (1) and bits per element (8) match the core architecture

Allowable Parameter Variations:

• Clock frequency may exceed the main part specification
• Propagation delay may be lower (faster operation)
• Input capacitance may be lower
• Operating temperature range may be narrower
• Quiescent current and output current specifications must remain within acceptable industrial tolerances

These variations represent performance improvements or equivalent specifications that do not compromise design compatibility.

Parameter Comparison

Engineering Selection Recommendations

The MC74ACT273DTR2G manufactured by onsemi is a direct functional substitute for the CD74ACT273PWR. Both devices share identical logic architecture, pin configuration, and core electrical specifications. Selection between these parts should be based on the following engineering criteria:

Supply Chain and Availability: Choose based on current inventory levels, lead times, and supplier reliability. Both parts are in active production status.

Compliance Requirements: Both parts meet ROHS3 compliance and REACH unaffected status, suitable for applications requiring environmental and regulatory adherence.

Operating Temperature Range: The CD74ACT273PWR supports extended temperature operation (-55°C to 125°C), while the MC74ACT273DTR2G operates within -40°C to 85°C. Select the Texas Instruments part for applications requiring operation below -40°C or above 85°C.

Performance Characteristics: The MC74ACT273DTR2G offers superior performance with 200 MHz clock frequency versus 85 MHz, and lower propagation delay (11ns versus 14.6ns). These improvements provide design margin for timing-critical applications without compromising compatibility.

Packaging and Thermal Considerations: Both devices use identical 20-TSSOP surface mount packaging with equivalent thermal characteristics and board layout requirements.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT273DTR2G replace CD74ACT273PWR in existing designs?

A: Yes. Both parts share the same base product number (74ACT273), identical pin configuration, and equivalent electrical specifications. Direct substitution is possible without circuit modification.

Q: What are the key differences between these parts?

A: The primary differences are manufacturer (Texas Instruments versus onsemi), operating temperature range (CD74ACT273PWR supports -55°C to 125°C versus MC74ACT273DTR2G at -40°C to 85°C), and performance specifications (MC74ACT273DTR2G offers higher clock frequency and lower propagation delay).

Q: Are there packaging compatibility concerns?

A: No. Both parts use identical 20-TSSOP surface mount packaging with 0.173" width and 4.40mm dimensions. PCB footprints, solder reflow profiles, and handling procedures are interchangeable.

Q: Which part should I select for low-temperature applications?

A: The CD74ACT273PWR supports operation down to -55°C and is the appropriate choice for applications requiring extended low-temperature performance.

Q: Do both parts meet environmental compliance standards?

A: Yes. Both CD74ACT273PWR and MC74ACT273DTR2G are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the impact of different propagation delays?

A: The MC74ACT273DTR2G has lower propagation delay (11ns versus 14.6ns), resulting in faster data transfer. This represents improved performance and provides additional timing margin in synchronous logic circuits.

Q: Can I use MC74ACT273DTR2G in applications designed for CD74ACT273PWR?

A: Yes, provided the operating temperature range of -40°C to 85°C is acceptable for your application. The superior performance characteristics of the onsemi part make it suitable for all applications within this temperature range.