74HC74DB,118 Equivalent & Substitute Parts

Part Overview

The 74HC74DB,118 is a dual D-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc. in a 14-SSOP surface mount package. This component functions as a 2-element D-type flip-flop with complementary outputs, positive edge triggering, and set/reset capability. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

74HC74DB,118

Nexperia USA Inc.In Stock: 72774HC74DB,118 Datasheet

Current PartRFQ

74HC74PW,118

NXP USA Inc.In Stock: 675674HC74PW,118 Datasheet

SimilarRFQ

SN74HC74DBR

Texas InstrumentsIn Stock: 5307SN74HC74DBR Datasheet

SimilarRFQ

SN74HC74PW

Texas InstrumentsIn Stock: 5703SN74HC74PW Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74HC74DB,118 is determined by the following critical parameters:

• Base product number (74HC74 series)
• Functional equivalence (dual D-type flip-flop with complementary outputs and positive edge triggering)
• Electrical specifications (supply voltage range, clock frequency, propagation delay, output current)
• Package compatibility (14-SSOP or 14-TSSOP surface mount packages)
• Operating temperature range
• Compliance certifications (RoHS3, REACH status)

Substitute parts must maintain identical or superior electrical performance within the specified voltage and temperature ranges. Package variants (SSOP vs. TSSOP) represent physical form factor differences while maintaining electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

For direct replacement of the obsolete 74HC74DB,118 in 14-SSOP package form factor, the SN74HC74DBR from Texas Instruments is the primary equivalent. This part maintains identical package dimensions and pinout while offering active product status and ROHS3 compliance.

The 74HC74PW,118 from Nexperia provides an active alternative with identical electrical performance to the original part, including the higher clock frequency specification (82 MHz) and extended operating temperature range (-40°C to 125°C). This part uses the 14-TSSOP package, which is physically smaller but electrically equivalent.

The SN74HC74PW from Texas Instruments offers similar functionality in 14-TSSOP packaging with active historical status. However, this part is discontinued at DiGi Electronics and features reduced operating temperature range (-40°C to 85°C) and lower quiescent current specifications compared to the Nexperia alternatives.

Selection should prioritize parts with active product status and confirmed RoHS3 compliance for new designs. Package selection (SSOP vs. TSSOP) depends on PCB layout constraints and available inventory.

Frequently Asked Questions (FAQ)

Q: Can the 74HC74PW,118 replace the 74HC74DB,118 in existing designs?

A: Yes. Both parts share the same base product number (74HC74), identical electrical specifications, and equivalent functional performance. The primary difference is package form factor: 14-TSSOP (0.173", 4.40mm width) versus 14-SSOP (0.209", 5.30mm width). PCB layout modifications may be required to accommodate the different package dimensions.

Q: What is the difference between the Nexperia and Texas Instruments versions?

A: Both manufacturers produce 74HC74 logic devices with the same core functionality. The Nexperia versions (74HC74DB,118 and 74HC74PW,118) specify 82 MHz clock frequency and -40°C to 125°C operating temperature. The Texas Instruments versions (SN74HC74DBR and SN74HC74PW) specify 60 MHz clock frequency and -40°C to 85°C operating temperature. All versions maintain compatible supply voltage ranges (2V to 6V) and output current specifications.

Q: Is the SN74HC74DBR a direct pin-for-pin replacement?

A: Yes. The SN74HC74DBR maintains identical pinout and 14-SSOP package dimensions to the 74HC74DB,118, enabling direct PCB substitution without layout modifications.

Q: What does "obsolete" status mean for the 74HC74DB,118?

A: Obsolete status indicates the part is no longer manufactured by Nexperia. Existing inventory may be available through authorized distributors, but long-term procurement cannot be guaranteed. Active alternatives such as 74HC74PW,118 or SN74HC74DBR should be considered for new designs or future production runs.

Q: Are all substitute parts RoHS3 compliant?

A: The 74HC74DB,118, SN74HC74DBR, and SN74HC74PW are confirmed ROHS3 compliant. RoHS compliance status for 74HC74PW,118 is not specified in the provided data.