SN74HC273N Equivalent & Substitute Parts

Part Overview

The SN74HC273N is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, designed for 8-bit parallel data storage applications. This component features a single element with 8 bits per element, positive edge triggering, and non-inverted output configuration. The device operates across a 2V to 6V supply voltage range with a maximum propagation delay of 27ns at 6V with 50pF load. Currently in active product status with 13,452 units in stock, the SN74HC273N serves as a standard reference for digital logic applications requiring reliable data latching and storage functionality. Equivalent substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and functional equivalence within the 74HC logic family.

Substiute Parts

SN74HC273N

Texas InstrumentsIn Stock: 13560SN74HC273N Datasheet

Current PartRFQ

TC74HC273APF

Toshiba Semiconductor and StorageIn Stock: 905TC74HC273APF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC273N is determined by strict alignment with the following critical parameters:

• Functional Type: D-Type flip-flop with 1 element and 8 bits per element
• Trigger Configuration: Positive edge triggering with non-inverted output
• Electrical Specifications: Supply voltage range 2V ~ 6V, operating temperature -40°C ~ 85°C
• Mechanical Compatibility: 20-DIP package with 0.300" (7.62mm) pitch for through-hole mounting
• Series Classification: 74HC logic family
• Compliance Requirements: ROHS3 compliant, REACH unaffected status

The TC74HC273APF manufactured by Toshiba Semiconductor and Storage qualifies as a direct substitute based on matching all functional, electrical, and mechanical parameters within the 74HC series specification envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the SN74HC273N and TC74HC273APF maintain active product status with full ROHS3 compliance and REACH unaffected classification, ensuring regulatory alignment for current and future applications. The TC74HC273APF demonstrates superior performance characteristics with 66 MHz clock frequency versus 60 MHz, reduced propagation delay of 25ns compared to 27ns, and lower quiescent current consumption of 4 µA versus 8 µA. These performance improvements position the TC74HC273APF as a functionally equivalent substitute with enhanced electrical efficiency. Both devices share identical supply voltage ranges, operating temperature specifications, and mechanical package dimensions, ensuring direct pin-compatible replacement capability in 20-DIP through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can TC74HC273APF directly replace SN74HC273N in existing designs?

A: Yes. Both devices are 20-DIP through-hole packages with identical pin configurations, supply voltage ranges (2V ~ 6V), and operating temperature specifications (-40°C ~ 85°C). The TC74HC273APF provides equivalent or superior electrical performance.

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

A: The TC74HC273APF operates at 66 MHz versus 60 MHz, exhibits 25ns propagation delay compared to 27ns, and consumes 4 µA quiescent current versus 8 µA. Input capacitance differs at 5 pF versus 3 pF. All differences remain within 74HC series specification tolerances.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both SN74HC273N and TC74HC273APF are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What determines substitution eligibility for 74HC273 variants?

A: Substitution requires matching D-Type flip-flop configuration with 1 element and 8 bits, positive edge triggering, non-inverted output, 20-DIP package format, 2V ~ 6V supply range, and -40°C ~ 85°C operating temperature. Functional equivalence within the 74HC logic family is mandatory.

Q: Can these parts be used in new designs?

A: Both devices maintain active product status, confirming availability and suitability for new design implementations. Inventory levels support production requirements for both variants.