CD74ACT273PW Equivalent & Substitute Parts

Part Overview

The CD74ACT273PW is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit configuration in a 20-TSSOP surface mount package. This component functions as a master reset flip-flop with positive edge triggering and non-inverted outputs. The CD74ACT273PW is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production requirements. Equivalent alternatives maintain the same functional specifications, electrical performance parameters, and mechanical compatibility within the 74ACT logic family.

Substiute Parts

CD74ACT273PW

Texas InstrumentsIn Stock: 821CD74ACT273PW Datasheet

Current PartRFQ

CD74ACT273PWR

Texas InstrumentsIn Stock: 17179CD74ACT273PWR Datasheet

DirectRFQ

MC74ACT273DTR2G

onsemiIn Stock: 9875MC74ACT273DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD74ACT273PW are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Compatibility Criteria:

• Logic family: 74ACT series
• Function: D-Type flip-flop with master reset
• Configuration: 1 element, 8-bit
• Output type: Non-inverted
• Trigger type: Positive edge
• Supply voltage range: 4.5V ~ 5.5V
• Output current capability: 24mA high and low

Mechanical Compatibility Criteria:

• Package type: 20-TSSOP
• Physical dimensions: 0.173" × 4.40mm width
• Mounting type: Surface mount

Compliance Criteria:

• RoHS3 compliance
• Moisture sensitivity level: 1 (Unlimited)

Substitutes are grouped into two categories: direct packaging equivalents and manufacturer-recommended alternatives. All qualified substitutes maintain identical functional specifications and are pin-compatible within the specified electrical and thermal operating ranges.

Parameter Comparison

Engineering Selection Recommendations

CD74ACT273PWR (Direct Substitute - Texas Instruments)

The CD74ACT273PWR is the direct equivalent from Texas Instruments, differing only in packaging format (Tape & Reel versus tube). This part maintains identical electrical specifications and operating temperature range (-55°C ~ 125°C). The product status is Active, ensuring long-term availability and supply chain stability. This substitute is recommended for applications requiring continuity with the original Texas Instruments product line and extended temperature operation.

MC74ACT273DTR2G (Manufacturer-Recommended Alternative - onsemi)

The MC74ACT273DTR2G is the onsemi equivalent within the 74ACT logic family. This part offers enhanced performance characteristics: higher clock frequency (200 MHz versus 85 MHz), faster propagation delay (11ns versus 12.3ns), and lower input capacitance (4.5 pF versus 10 pF). The operating temperature range is narrower (-40°C ~ 85°C), which may be a limiting factor for extended temperature applications. The product status is Active with strong inventory availability. This substitute is suitable for applications where the narrower temperature range is acceptable and where the improved speed performance provides design margin.

Both substitutes maintain full pin compatibility, identical supply voltage requirements, and equivalent output drive capability. Selection between substitutes depends on temperature range requirements and performance headroom needs for the specific application.

Frequently Asked Questions (FAQ)

Q: Can CD74ACT273PWR be used as a direct replacement for CD74ACT273PW?

A: Yes. The CD74ACT273PWR is functionally and electrically identical to the CD74ACT273PW. The only difference is packaging format: CD74ACT273PW is supplied in tube packaging, while CD74ACT273PWR is supplied in Tape & Reel format. Both maintain the same 20-TSSOP package dimensions, pin configuration, and electrical specifications. The operating temperature range is identical (-55°C ~ 125°C).

Q: What are the key differences between CD74ACT273PWR and MC74ACT273DTR2G?

A: Both parts are functionally equivalent 74ACT D-Type flip-flops with identical pin configuration and package type. The MC74ACT273DTR2G offers superior performance: 200 MHz clock frequency (versus 85 MHz), 11ns propagation delay (versus 14.6ns), and lower input capacitance (4.5 pF versus 10 pF). However, the MC74ACT273DTR2G has a narrower operating temperature range (-40°C ~ 85°C versus -55°C ~ 125°C). Select based on your application's temperature requirements and performance needs.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the identical 20-TSSOP package with the same pin configuration. They are mechanically and electrically interchangeable at the board level, provided the operating temperature range of the selected substitute meets application requirements.

Q: What does the packaging designation "Tape & Reel (TR)" mean?

A: Tape & Reel packaging is the standard format for automated assembly processes. Components are wound on continuous tape with a carrier reel, enabling high-speed pick-and-place machine operation. This format is preferred for production volumes. Tube packaging (used for CD74ACT273PW) is typically used for lower-volume or manual assembly applications.

Q: Can MC74ACT273DTR2G be used in applications requiring -55°C operation?

A: No. The MC74ACT273DTR2G operating temperature range is -40°C ~ 85°C. It cannot be used in applications requiring operation below -40°C. For extended low-temperature operation down to -55°C, use either CD74ACT273PW or CD74ACT273PWR.

Q: Are all three parts RoHS3 compliant?

A: Yes. All three parts carry ROHS3 compliance certification and are suitable for applications with RoHS requirements.