N74F273AD,623 Equivalent & Substitute Parts

Part Overview

The N74F273AD,623 is a Flip Flop 1 Element D-Type 8 Bit logic integrated circuit manufactured by NXP USA Inc. in the 74F series. This component functions as a master reset device with positive edge triggering and non-inverted outputs, housed in a 20-SOIC surface mount package. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

N74F273AD,623

NXP USA Inc.In Stock: 1221N74F273AD,623 Datasheet

Current PartRFQ

MC74ACT273DWR2G

onsemiIn Stock: 2342MC74ACT273DWR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the N74F273AD,623 is determined by strict alignment of the following critical parameters:

• Package Compatibility: Both parts must use the 20-SOIC (0.295", 7.50mm Width) surface mount package to ensure PCB footprint compatibility
• Functional Equivalence: D-Type flip flop configuration with 1 element, 8 bits per element, positive edge triggering, and non-inverted outputs
• Electrical Interface: Supply voltage range of 4.5V ~ 5.5V and compatible output drive characteristics
• Logic Family Compatibility: The substitute must operate within the same logic voltage domain and timing parameters suitable for the application

The MC74ACT273DWR2G meets these substitution criteria as an active product from onsemi in the 74ACT series, maintaining identical package geometry, functional architecture, and electrical interface specifications.

Parameter Comparison

Engineering Selection Recommendations

The MC74ACT273DWR2G is the designated substitute for the obsolete N74F273AD,623. Selection of this substitute is based on the following engineering criteria:

Product Status: The N74F273AD,623 is obsolete, while the MC74ACT273DWR2G maintains active product status with ongoing manufacturer support and availability.

Compliance Alignment: Both components are ROHS3 compliant and REACH unaffected, ensuring regulatory consistency in applications requiring environmental compliance certification.

Functional Equivalence: The MC74ACT273DWR2G preserves the core D-Type flip flop architecture, 8-bit configuration, positive edge triggering, and non-inverted output topology required for direct functional replacement.

Package Compatibility: Identical 20-SOIC surface mount packaging ensures PCB footprint compatibility without layout modifications.

Electrical Interface: Both components operate within the 4.5V ~ 5.5V supply voltage range, maintaining compatibility with existing power distribution infrastructure.

Frequently Asked Questions (FAQ)

Q: Can the MC74ACT273DWR2G be used as a direct replacement for the N74F273AD,623?

A: Yes. The MC74ACT273DWR2G is functionally and mechanically equivalent. Both components share identical package geometry, D-Type flip flop configuration with 8-bit architecture, positive edge triggering, and non-inverted outputs. The 20-SOIC surface mount package is identical, requiring no PCB modifications.

Q: What are the key differences between these two parts?

A: The primary differences are product status and performance characteristics. The N74F273AD,623 operates at 170 MHz with 38 mA quiescent current and a 0°C ~ 70°C temperature range. The MC74ACT273DWR2G operates at 200 MHz with significantly lower 8 µA quiescent current and an extended -40°C ~ 85°C temperature range. Output drive capability differs: the N74F273AD,623 provides 1mA high and 20mA low, while the MC74ACT273DWR2G provides 24mA for both high and low outputs.

Q: Are there any compatibility concerns with the extended temperature range of the substitute?

A: No. The MC74ACT273DWR2G's extended operating temperature range of -40°C ~ 85°C encompasses the original part's 0°C ~ 70°C specification. This provides broader operational capability without introducing compatibility issues.

Q: Does the higher clock frequency of the substitute affect compatibility?

A: No. The MC74ACT273DWR2G's 200 MHz clock frequency exceeds the original 170 MHz specification, providing performance headroom. Applications designed for the N74F273AD,623 operate within the substitute's timing envelope.

Q: What is the significance of the lower quiescent current in the substitute?

A: The MC74ACT273DWR2G's 8 µA quiescent current compared to the original 38 mA represents a substantial reduction in standby power consumption. This provides power efficiency benefits in applications with extended idle periods, with no negative impact on functional compatibility.

Q: Are both components RoHS compliant?

A: Yes. Both the N74F273AD,623 and MC74ACT273DWR2G are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronics manufacturing and deployment.

Q: What packaging format is available for the MC74ACT273DWR2G?

A: The MC74ACT273DWR2G is supplied in Tape & Reel (TR) packaging, standard for surface mount production environments. The component maintains the identical 20-SOIC (0.295", 7.50mm Width) package geometry as the original part.