74HC273DB,118 Equivalent & Substitute Parts

Part Overview

The 74HC273DB,118 is a D-Type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., featuring 1 element with 8-bit configuration and positive edge triggering. This component is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across a 2V to 6V supply range with a maximum propagation delay of 26ns at 6V with 50pF load, suitable for general-purpose digital logic applications requiring edge-triggered storage elements.

Substiute Parts

74HC273DB,118

Nexperia USA Inc.In Stock: 104974HC273DB,118 Datasheet

Current PartRFQ

74HC273PW,118

Nexperia USA Inc.In Stock: 691274HC273PW,118 Datasheet

SimilarRFQ

SN74HC273QPWRQ1

Texas InstrumentsIn Stock: 6873SN74HC273QPWRQ1 Datasheet

DirectRFQ

SN74HC273DBR

Texas InstrumentsIn Stock: 1971SN74HC273DBR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC273DB,118 is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Base product number (74HC273)
• Function (Master Reset)
• Type (D-Type flip-flop)
• Number of elements (1) and bits per element (8)
• Output type (Non-Inverted)
• Trigger type (Positive Edge)
• Supply voltage range (2V ~ 6V)
• Operating temperature range (-40°C ~ 125°C)

Mechanical Equivalence Criteria:

• Surface mount technology
• Package family compatibility (SSOP or TSSOP variants)
• RoHS3 compliance

Substitute parts are grouped by package type: 20-SSOP (0.209", 5.30mm Width) and 20-TSSOP (0.173", 4.40mm Width) variants. All identified substitutes maintain functional equivalence while differing in packaging format and manufacturer source.

Parameter Comparison

Engineering Selection Recommendations

For 20-SSOP Package Compatibility: The SN74HC273DBR (Texas Instruments) maintains identical package geometry to the 74HC273DB,118, supporting direct footprint compatibility on existing printed circuit boards. Both parts are RoHS3 compliant with MSL rating of 1 (Unlimited), indicating equivalent moisture handling requirements. The SN74HC273DBR operates within a reduced temperature range (-40°C to 85°C) compared to the original part (-40°C to 125°C), which may require thermal evaluation for high-temperature applications.

For 20-TSSOP Package Compatibility: The 74HC273PW,118 (Nexperia USA Inc.) and SN74HC273QPWRQ1 (Texas Instruments) both utilize the narrower 20-TSSOP package (0.173", 4.40mm Width). The 74HC273PW,118 maintains identical electrical specifications to the main part, including 122 MHz clock frequency and 26ns propagation delay. The SN74HC273QPWRQ1 operates at reduced clock frequency (60 MHz) and carries MSL rating of 3 (168 Hours), requiring moisture control during storage and handling.

Compliance and Regulatory Status: All substitute parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory equivalence for applications subject to environmental directives. Active product status for all substitutes ensures ongoing availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the 74HC273PW,118 replace the 74HC273DB,118 on the same PCB? A: No. The 74HC273PW,118 uses a 20-TSSOP package (0.173", 4.40mm Width) while the 74HC273DB,118 uses a 20-SSOP package (0.209", 5.30mm Width). These packages have different footprints and cannot be used interchangeably without PCB redesign. The SN74HC273DBR maintains the same 20-SSOP package and supports direct substitution.

Q: What is the difference between the Nexperia and Texas Instruments versions? A: Both manufacturers produce functionally equivalent 74HC273 logic devices meeting the same electrical specifications. Nexperia versions (74HC273DB,118 and 74HC273PW,118) maintain 122 MHz clock frequency and 26ns propagation delay. Texas Instruments versions (SN74HC273DBR and SN74HC273QPWRQ1) operate at 60 MHz with 27ns propagation delay. Selection depends on package requirements and thermal operating range.

Q: Is the SN74HC273QPWRQ1 suitable for high-temperature applications? A: The SN74HC273QPWRQ1 operates across -40°C to 125°C, matching the original part's temperature range. However, its MSL rating of 3 (168 Hours) requires moisture control during storage and assembly, unlike the MSL 1 (Unlimited) rating of other substitutes.

Q: What does MSL rating mean for component selection? A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to ambient conditions (typically 30°C, 85% relative humidity) before assembly. MSL 1 (Unlimited) allows indefinite storage without moisture control. MSL 3 (168 Hours) limits exposure to 168 hours, requiring desiccant storage and controlled handling during manufacturing.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All identified substitutes (74HC273PW,118, SN74HC273QPWRQ1, and SN74HC273DBR) are RoHS3 compliant and REACH Unaffected, ensuring regulatory equivalence for applications subject to environmental directives.

Q: What is the primary reason for substituting the 74HC273DB,118? A: The 74HC273DB,118 is classified as Obsolete. Substitution is necessary to ensure long-term design support and procurement continuity. Active alternatives from both Nexperia and Texas Instruments provide equivalent functionality with ongoing manufacturing availability.