CD74AC273M Equivalent & Substitute Parts

Part Overview

The CD74AC273M is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit capacity and positive edge triggering. This component is classified as a master reset flip-flop in the 74AC logic series and is packaged in a 20-SOIC surface mount configuration.

The CD74AC273M is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available from Texas Instruments and onsemi that maintain functional compatibility while offering improved availability and performance characteristics.

Substiute Parts

CD74AC273M

Texas InstrumentsIn Stock: 1119CD74AC273M Datasheet

Current PartRFQ

CD74AC273M96

Texas InstrumentsIn Stock: 50290CD74AC273M96 Datasheet

DirectRFQ

MC74AC273DWG

onsemiIn Stock: 1195MC74AC273DWG Datasheet

MFR RecommendedRFQ

MC74AC273DWR2G

onsemiIn Stock: 2843MC74AC273DWR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74AC273M is determined by the following critical parameters:

• Logic Function: D-Type flip-flop with 1 element, 8-bit configuration, positive edge trigger, non-inverted output, and master reset function
• Package Compatibility: 20-SOIC (0.295", 7.50mm Width) surface mount package
• Electrical Specifications: Supply voltage range, output current capability, propagation delay, and quiescent current
• Environmental Compliance: RoHS3 compliance and REACH unaffected status

All substitute parts listed maintain identical logic function, package footprint, and core electrical characteristics. Variations in clock frequency, propagation delay, supply voltage range, and operating temperature reflect manufacturer-specific performance enhancements and do not affect functional substitution within standard applications.

Parameter Comparison

Engineering Selection Recommendations

CD74AC273M96 (Texas Instruments, Active Status): Direct equivalent from the original manufacturer with identical electrical specifications and extended temperature range (-55°C ~ 125°C). Available in Tape & Reel packaging with 50,200 units in stock. Recommended for applications requiring the original manufacturer's specifications and extended operating temperature range.

MC74AC273DWG (onsemi, Active Status): Functionally equivalent with improved performance characteristics including higher clock frequency (175 MHz), faster propagation delay (9 ns), and lower input capacitance (4.5 pF). Supplied in Tube packaging with 1,182 units in stock. Operating temperature range is -40°C ~ 85°C. Suitable for applications where enhanced speed performance is beneficial and operating temperature requirements are within the specified range.

MC74AC273DWR2G (onsemi, Active Status): Functionally equivalent with identical performance characteristics to MC74AC273DWG. Available in Tape & Reel packaging with 2,740 units in stock. Recommended for high-volume production requiring automated assembly processes.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compliance across applications.

Frequently Asked Questions (FAQ)

Q: Can CD74AC273M96 be used as a direct replacement for CD74AC273M?

A: Yes. CD74AC273M96 is a direct equivalent from Texas Instruments with identical electrical specifications, package footprint, and functional characteristics. The primary difference is packaging format (Tape & Reel versus Tube) and active product status.

Q: What are the performance differences between Texas Instruments and onsemi substitutes?

A: onsemi parts (MC74AC273DWG and MC74AC273DWR2G) offer improved performance with 175 MHz clock frequency versus 100 MHz, 9 ns propagation delay versus 14.6 ns, and 4.5 pF input capacitance versus 10 pF. Supply voltage range is 2V ~ 6V versus 1.5V ~ 5.5V, and operating temperature is -40°C ~ 85°C versus -55°C ~ 125°C.

Q: Are the onsemi parts compatible with the original CD74AC273M footprint?

A: Yes. All substitute parts use the identical 20-SOIC (0.295", 7.50mm Width) surface mount package, ensuring direct PCB footprint compatibility.

Q: What is the difference between MC74AC273DWG and MC74AC273DWR2G?

A: Both parts are electrically and functionally identical. The difference is packaging format: MC74AC273DWG is supplied in Tube packaging, while MC74AC273DWR2G is supplied in Tape & Reel (TR) packaging for automated assembly processes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for electronic component applications.

Q: What is the Moisture Sensitivity Level (MSL) difference, and does it affect substitution?

A: CD74AC273M and CD74AC273M96 have MSL 1 (Unlimited), while onsemi parts have MSL 3 (168 Hours). MSL 3 requires controlled storage and handling within 168 hours of package opening. This does not affect functional substitution but requires appropriate moisture control procedures during assembly.