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74LVC2G126HD4-7 Equivalent & Substitute Parts
Part Overview
The 74LVC2G126HD4-7 is a non-inverting buffer logic IC manufactured by Diodes Incorporated, featuring 2 elements with 1 bit per element and 3-state output capability. This device operates across a supply voltage range of 1.65V to 5.5V and maintains active product status with full RoHS3 compliance. Substitute parts are identified based on matching electrical characteristics, output drive capability, and functional equivalence within the 74LVC logic family, enabling design flexibility and supply chain optimization.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Manufacturer Part Number | 74LVC2G126HD4-7 |
| Manufacturer | Diodes Incorporated |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 1 |
| Output Type | 3-State |
| Current - Output High, Low | 32mA, 32mA |
| Voltage - Supply | 1.65V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Package / Case | 8-XFDFN |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the 74LVC2G126HD4-7 are classified into two functional categories based on element count and package configuration:
Category 1: Dual-Element 8-Pin Equivalents (Direct Functional Substitutes) These parts maintain the 2-element configuration with identical electrical specifications and 8-pin packaging. Substitution is based on matching: Logic Type (Buffer, Non-Inverting), Number of Elements (2), Output Type (3-State), Current ratings (32mA/32mA), Supply Voltage range (1.65V ~ 5.5V), Operating Temperature (-40°C ~ 125°C), and RoHS3 compliance. Package variants differ only in physical footprint dimensions (X2-DFN2010-8, X2-DFN1410-8, X2-DFN1210-8) while maintaining electrical equivalence.
Category 2: Single-Element 6-Pin Alternatives (Functional Substitutes with Reduced Element Count) These parts provide single-element configurations in 6-pin packages. Substitution is valid when circuit design permits use of individual buffer elements rather than dual elements. Electrical parameters remain identical: Logic Type (Buffer, Non-Inverting), Output Type (3-State), Current ratings (32mA/32mA), Supply Voltage (1.65V ~ 5.5V), and Operating Temperature (-40°C ~ 125°C). This category includes both 74LVC1G125 and 74LVC1G126 base product numbers.
All substitute parts share: Diodes Incorporated manufacturer origin, 74LVC series classification, Active product status, RoHS3 compliance, MSL Level 1, and Surface Mount technology.
Parameter Comparison
| Part Number | Elements | Bits/Element | Output Type | Current (mA) | Supply Voltage | Temp Range | Package | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|
| 74LVC2G126HD4-7 | 2 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 8-XFDFN | 4833 |
| 74LVC2G125HD4-7 | 2 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 8-XFDFN | 3000 |
| 74LVC2G125HK3-7 | 2 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 8-XFDFN | 1015 |
| 74LVC2G125RA3-7 | 2 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 8-XFDFN | 6089 |
| 74LVC1G126FW4-7 | 1 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 6-XFDFN | 30100 |
| 74LVC1G126FW5-7 | 1 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 6-XFDFN | 6070 |
| 74LVC1G126FX4-7 | 1 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 6-XFDFN | 766 |
| 74LVC1G125FW4-7 | 1 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 6-XFDFN | 10200 |
| 74LVC1G125FW5-7 | 1 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 6-XFDFN | 5957 |
| 74LVC1G125FX4-7 | 1 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 6-XFDFN | 990 |
| 74LVC1G125FZ4-7 | 1 | 1 | 3-State | 32/32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 6-XFDFN | 35100 |
Engineering Selection Recommendations
Selection of substitute parts for the 74LVC2G126HD4-7 is determined by circuit architecture requirements and package footprint constraints:
For Direct Replacement (Dual-Element Requirement): Parts 74LVC2G125HD4-7, 74LVC2G125HK3-7, and 74LVC2G125RA3-7 provide full functional equivalence with identical electrical performance and 8-pin packaging. These are suitable when PCB layout accommodates the 8-XFDFN package footprint and dual-element functionality is required. All three maintain Active product status and RoHS3 compliance.
For Space-Constrained Designs (Single-Element Requirement): The 74LVC1G126 and 74LVC1G125 series in 6-pin packages offer reduced footprint solutions when circuit design permits independent buffer element usage. The 74LVC1G125FZ4-7 provides highest inventory availability (35,100 units) among single-element options. The 74LVC1G126FW4-7 offers substantial inventory (30,100 units) with established supply stability.
Compliance and Reliability: All substitute parts maintain identical compliance certifications: RoHS3 compliance, MSL Level 1 (Unlimited moisture sensitivity), and Active product status. Selection between alternatives should prioritize inventory availability and package footprint compatibility with existing PCB designs.
Frequently Asked Questions (FAQ)
Q: Can 74LVC1G125 or 74LVC1G126 single-element parts replace the dual-element 74LVC2G126HD4-7? A: Yes, if circuit design permits. Single-element parts provide identical electrical specifications per element (32mA output current, 1.65V–5.5V supply, 3-state output). However, two single-element devices are required to replace one dual-element device. PCB layout and routing must accommodate the additional component.
Q: What is the difference between 74LVC2G125 and 74LVC2G126 variants? A: Both are dual-element, non-inverting buffers with 3-state outputs and identical electrical parameters. Differences exist only in package footprint variants (X2-DFN2010-8, X2-DFN1410-8, X2-DFN1210-8). Selection depends on PCB layout requirements and available land pattern dimensions.
Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain RoHS3 compliance and MSL Level 1 rating, matching the compliance profile of the 74LVC2G126HD4-7.
Q: What is the significance of package variant suffixes (FW4, FW5, FX4, FZ4)? A: Package suffixes indicate different physical footprint dimensions within the 6-XFDFN or 8-XFDFN family. Electrical performance remains identical. Selection is based on PCB land pattern compatibility and available board space.
Q: Which substitute part offers the best inventory availability? A: The 74LVC1G125FZ4-7 provides the highest inventory level at 35,100 units, followed by 74LVC1G126FW4-7 at 30,100 units. For dual-element requirements, 74LVC2G125RA3-7 offers 6,089 units.
Q: Can I use 74LVC1G125 and 74LVC1G126 interchangeably? A: Yes, within single-element applications. Both series provide identical electrical specifications and 3-state output functionality. Selection depends on package footprint availability and PCB design constraints.
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