SN74HC273APW Equivalent & Substitute Parts

Part Overview

The SN74HC273APW is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, designed for 8-bit parallel data storage applications. This device features a master reset function, positive edge triggering, and operates across a supply voltage range of 2V to 6V with a maximum clock frequency of 32 MHz. The component is packaged in a 20-TSSOP surface mount configuration with RoHS3 compliance and MSL Level 1 rating.

The SN74HC273APW is currently designated as Last Time Buy status, indicating limited future availability. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications requiring this logic function.

Substiute Parts

SN74HC273APW

Texas InstrumentsIn Stock: 864SN74HC273APW Datasheet

Current PartRFQ

SN74HC273APWR

Texas InstrumentsIn Stock: 1091SN74HC273APWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC273APW is determined by strict parametric matching across the following critical criteria:

Functional Parameters:

• Type: D-Type flip-flop architecture
• Number of Elements: 1
• Number of Bits per Element: 8
• Function: Master Reset capability
• Output Type: Non-Inverted
• Trigger Type: Positive Edge

Electrical Parameters:

• Clock Frequency: 32 MHz minimum
• Voltage - Supply: 2V ~ 6V range
• Current - Output High, Low: 5.2mA, 5.2mA
• Current - Quiescent (Iq): 8 µA
• Input Capacitance: 3 pF

Physical & Environmental Parameters:

• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Operating Temperature: -40°C ~ 85°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Only parts matching all specified parameters across these categories qualify as parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

The SN74HC273APWR serves as a direct parametric equivalent to the SN74HC273APW. Both components are manufactured by Texas Instruments within the 74HC logic series and share identical electrical, functional, and physical specifications.

The primary distinction between these parts is product status: the SN74HC273APW is designated Last Time Buy, while the SN74HC273APWR maintains Active status. This status difference reflects supply chain availability and manufacturer support timelines.

Both parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage protocols. The identical package configuration (20-TSSOP) and pinout enable direct board-level substitution without design modification.

For applications currently specified with SN74HC273APW, transition to SN74HC273APWR is supported by complete parametric alignment and ensures continued component availability for production and field replacement scenarios.

Frequently Asked Questions (FAQ)

Q: Can SN74HC273APWR replace SN74HC273APW in existing designs?

A: Yes. Both parts are parametrically identical across all functional, electrical, and physical specifications. The 20-TSSOP package configuration and pinout are identical, enabling direct substitution without PCB redesign or firmware modification.

Q: What is the difference between SN74HC273APW and SN74HC273APWR?

A: The parts differ only in product status. SN74HC273APW is Last Time Buy, indicating limited future availability. SN74HC273APWR is Active status, ensuring ongoing supply and manufacturer support. All technical specifications are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both SN74HC273APW and SN74HC273APWR are ROHS3 compliant with MSL Level 1 rating, meeting environmental and moisture sensitivity requirements for standard manufacturing processes.

Q: What is the operating temperature range for these parts?

A: Both parts operate across -40°C to 85°C, suitable for industrial and commercial temperature environments.

Q: Can these parts be used interchangeably in high-frequency applications?

A: Yes. Both parts support a maximum clock frequency of 32 MHz with identical propagation delay characteristics, enabling interchangeable use in timing-critical applications within this frequency specification.

Q: What is the supply voltage requirement?

A: Both parts operate across a 2V to 6V supply voltage range, providing flexibility for various logic level systems and power supply configurations.