SN74LVC2G74DCTRG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC2G74DCTRG4 is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in an 8-LSSOP surface mount package. This device provides Set(Preset) and Reset functionality with complementary outputs, operating across a supply voltage range of 1.65V to 5.5V. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

SN74LVC2G74DCTRG4

Texas InstrumentsIn Stock: 1858SN74LVC2G74DCTRG4 Datasheet

Current PartRFQ

SN74LVC2G74DCTR

Texas InstrumentsIn Stock: 10030SN74LVC2G74DCTR Datasheet

MFR RecommendedRFQ

SN74LVC2G74DCT3

Texas InstrumentsIn Stock: 4007SN74LVC2G74DCT3 Datasheet

Parametric EquivalentRFQ

SN74LVC2G74DCTRE6

Texas InstrumentsIn Stock: 114666SN74LVC2G74DCTRE6 Datasheet

Parametric EquivalentRFQ

74LVC1G74DP,125

Nexperia USA Inc.In Stock: 2204474LVC1G74DP,125 Datasheet

MFR RecommendedRFQ

74LVC2G74DP,125

Nexperia USA Inc.In Stock: 1501874LVC2G74DP,125 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVC2G74DCTRG4 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• D-Type flip-flop architecture with Set(Preset) and Reset function
• Complementary output configuration
• Positive edge trigger operation
• Supply voltage range: 1.65V ~ 5.5V (must encompass or match)
• Operating temperature range: -40°C ~ 125°C
• Output drive capability: 32mA minimum for both high and low states

Mechanical Compatibility Requirements:

• Surface mount packaging (8-pin configuration)
• Pin-compatible footprint (8-LSSOP or 8-TSSOP packages acceptable with PCB layout verification)
• Moisture sensitivity level MSL 1 or equivalent

Compliance Requirements:

• ROHS3 compliance
• REACH unaffected status
• EAR99 classification

Substitute parts are grouped into two categories: direct pin-compatible replacements from Texas Instruments (same package family) and functionally equivalent alternatives from Nexperia USA Inc. (different package geometry requiring footprint verification).

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74LVC2G74DCTR

The SN74LVC2G74DCTR is the preferred substitute for the discontinued SN74LVC2G74DCTRG4. This Texas Instruments part maintains identical electrical specifications with the exception of improved clock frequency (200 MHz versus 140 MHz) and reduced propagation delay (4.4 ns versus 5.1 ns). The package footprint is identical (8-LSSOP), requiring no PCB layout modifications. Product status is Active with robust inventory availability (9930 units). All compliance certifications match the original part.

Secondary Recommendation: SN74LVC2G74DCT3

The SN74LVC2G74DCT3 provides parametric equivalence with identical clock frequency and propagation delay characteristics to the original part. This Texas Instruments device maintains the same 8-LSSOP package footprint and all compliance requirements. Product status is Active with adequate inventory (3928 units). Selection of this part is appropriate when clock frequency matching is a design requirement.

Tertiary Recommendation: SN74LVC2G74DCTRE6

The SN74LVC2G74DCTRE6 is functionally equivalent to the SN74LVC2G74DCT3, differentiated by packaging format (Tape & Reel versus Cut Tape). This part is suitable for high-volume production environments. Inventory availability is significantly higher (114649 units). All electrical and compliance parameters are identical to the DCT3 variant.

Alternative Consideration: Nexperia 74LVC1G74DP,125 and 74LVC2G74DP,125

Nexperia USA Inc. manufactures functionally equivalent D-type flip-flops in the 8-TSSOP package format. These parts feature improved propagation delay (4.1 ns) and reduced quiescent current (74LVC1G74DP,125 at 4 µA). However, the 8-TSSOP package geometry (0.118" width versus 0.110" width) requires PCB footprint verification and potential layout modifications. Selection of these parts is appropriate only when package geometry compatibility has been confirmed through design review.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74LVC2G74DCTRG4 with SN74LVC2G74DCTR without PCB modifications?

A: Yes. Both parts use identical 8-LSSOP package geometry (0.110" width, 2.80mm). Pin configuration and electrical specifications are compatible. No PCB layout changes are required.

Q: What is the difference between SN74LVC2G74DCTR and SN74LVC2G74DCT3?

A: The primary difference is clock frequency and propagation delay. SN74LVC2G74DCTR operates at 200 MHz with 4.4 ns propagation delay, while SN74LVC2G74DCT3 operates at 140 MHz with 6.1 ns propagation delay. Both are pin-compatible and use identical packaging. Selection depends on timing requirements of the application.

Q: Why do the Nexperia parts (74LVC1G74DP,125 and 74LVC2G74DP,125) have different package dimensions?

A: Nexperia manufactures these devices in 8-TSSOP package format (0.118" width) rather than 8-LSSOP (0.110" width). While both are 8-pin surface mount packages, the footprint geometry differs. PCB layout verification is required before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original SN74LVC2G74DCTRG4 certification requirements.

Q: What is the significance of the DCTRE6 suffix on SN74LVC2G74DCTRE6?

A: The DCTRE6 suffix indicates Tape & Reel packaging format suitable for automated assembly processes. The electrical specifications are identical to the DCT3 variant. Selection is based on production volume and assembly methodology rather than electrical performance.

Q: Can I use 74LVC1G74DP,125 as a direct replacement?

A: Electrical functionality is compatible, but package geometry differs (8-TSSOP versus 8-LSSOP). PCB footprint verification is mandatory. Additionally, quiescent current is lower (4 µA versus 10 µA), which may affect power consumption calculations.

Q: What is the inventory status of substitute parts?

A: SN74LVC2G74DCTR has 9930 units available. SN74LVC2G74DCT3 has 3928 units. SN74LVC2G74DCTRE6 has 114649 units (highest availability). Nexperia parts have 21943 units (74LVC1G74DP,125) and 14919 units (74LVC2G74DP,125).