SN74LVC1G79WDCKREP Equivalent & Substitute Parts

Part Overview

The SN74LVC1G79WDCKREP is a single-element D-type flip-flop logic integrated circuit manufactured by Texas Instruments. This device operates as a standard positive edge-triggered flip-flop with non-inverted output, housed in a 5-TSSOP (SC-70-5, SOT-353) surface mount package. The part maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when electrical parameters and mechanical packaging remain compatible within the 74LVC1G79 logic family, enabling direct replacement in circuit applications without functional degradation.

Substiute Parts

SN74LVC1G79WDCKREP

Texas InstrumentsIn Stock: 837SN74LVC1G79WDCKREP Datasheet

Current PartRFQ

SN74LVC1G79WDCKREP

Texas InstrumentsIn Stock: 837SN74LVC1G79WDCKREP Datasheet

Parametric EquivalentRFQ

74LVC1G79GW,125

Nexperia USA Inc.In Stock: 925774LVC1G79GW,125 Datasheet

UpgradeRFQ

74LVC1G79GV,125

NXP SemiconductorsIn Stock: 8862474LVC1G79GV,125 Datasheet

MFR RecommendedRFQ

74LVC1G79GW-Q100H

Nexperia USA Inc.In Stock: 404974LVC1G79GW-Q100H Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the 74LVC1G79 logic family is determined by the following critical parameters:

Electrical Compatibility Criteria:

• D-Type flip-flop architecture with single element, 1-bit configuration
• Positive edge trigger functionality
• Non-inverted output configuration
• Supply voltage range: 1.65V ~ 5.5V (all candidates meet this requirement)
• Output current capability: 32 mA minimum (all candidates meet this requirement)

Mechanical Compatibility Criteria:

• Package type: 5-TSSOP, SC-70-5, SOT-353 (primary package standard)
• Surface mount mounting type
• Pin count and footprint equivalence

Compliance Criteria:

• ROHS3 compliance status
• MSL 1 rating (unlimited moisture sensitivity)
• Active product status

Substitute parts are grouped into three categories based on performance enhancements and packaging variations while maintaining core electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Same Package, Enhanced Performance): 74LVC1G79GW,125 (Nexperia USA Inc.) and 74LVC1G79GW-Q100H (Nexperia USA Inc.) maintain identical 5-TSSOP packaging with the SN74LVC1G79WDCKREP. Both offer improved clock frequency (500 MHz vs. 160 MHz) and reduced propagation delay (3.8 ns vs. 4.5 ns). The 74LVC1G79GW-Q100H includes automotive-grade qualification (AEC-Q100) with superior quiescent current performance (4 µA vs. 10 µA), suitable for power-sensitive applications. Both parts maintain ROHS3 compliance and MSL 1 rating.

Alternative Package Option: 74LVC1G79GV,125 (NXP Semiconductors) uses SC-74A (SOT-753) packaging instead of 5-TSSOP. This part delivers equivalent electrical performance (500 MHz clock frequency, 3.8 ns propagation delay) but requires PCB layout modification due to different footprint geometry. Selection of this variant is appropriate only when PCB redesign is feasible or when SC-74A package availability is prioritized.

Compliance and Availability: All substitute parts maintain Active product status and ROHS3 compliance. The 74LVC1G79GW,125 offers highest inventory availability (9166 pcs), while 74LVC1G79GV,125 provides largest stock (88583 pcs). The automotive-qualified 74LVC1G79GW-Q100H (4009 pcs) is specified for applications requiring AEC-Q100 certification.

Frequently Asked Questions (FAQ)

Q: Can 74LVC1G79GW,125 directly replace SN74LVC1G79WDCKREP without PCB modification?

A: Yes. Both parts use identical 5-TSSOP (SC-70-5, SOT-353) packaging with matching pin configuration and footprint. No PCB layout changes are required. The 74LVC1G79GW,125 provides performance enhancement with 500 MHz clock frequency versus 160 MHz on the original part.

Q: What is the difference between 74LVC1G79GW,125 and 74LVC1G79GW-Q100H?

A: Both use 5-TSSOP packaging and deliver 500 MHz clock frequency with 3.8 ns propagation delay. The primary distinction is automotive qualification: 74LVC1G79GW-Q100H carries AEC-Q100 certification and exhibits superior quiescent current (4 µA vs. 500 µA). Select the Q100H variant for automotive applications or power-constrained designs.

Q: Why does 74LVC1G79GV,125 use a different package?

A: The 74LVC1G79GV,125 is manufactured by NXP Semiconductors in SC-74A (SOT-753) package format. While electrically equivalent, this package has different pin spacing and footprint geometry. PCB redesign is necessary for this substitution. Use this part only when package availability or design requirements specifically call for SC-74A format.

Q: Are all substitute parts ROHS3 compliant?

A: 74LVC1G79GW,125, SN74LVC1G79WDCKREP, and 74LVC1G79GW-Q100H are explicitly ROHS3 compliant. The 74LVC1G79GV,125 does not specify RoHS status in provided documentation.

Q: What is the operating temperature range difference?

A: SN74LVC1G79WDCKREP operates from -55°C to 115°C. All substitute parts (74LVC1G79GW,125, 74LVC1G79GV,125, 74LVC1G79GW-Q100H) operate from -40°C to 125°C, providing extended high-temperature capability. For applications requiring -55°C minimum operation, the original SN74LVC1G79WDCKREP is required.

Q: Can I use 74LVC1G79GV,125 in a design originally specified for 5-TSSOP package?

A: No, without PCB modification. The 74LVC1G79GV,125 uses SC-74A (SOT-753) package with different pin pitch and footprint. Existing 5-TSSOP pads will not accommodate this package. PCB redesign is mandatory for this substitution.

Q: Which substitute part offers the best power efficiency?

A: The 74LVC1G79GW-Q100H provides the lowest quiescent current at 4 µA, compared to 10 µA (original part) and 500 µA (74LVC1G79GW,125 and 74LVC1G79GV,125). For battery-powered or low-power applications, the Q100H variant is optimal.