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74LVC1G126DBVRG4 Equivalent & Substitute Parts
Part Overview
The 74LVC1G126DBVRG4 is a single-element, non-inverting buffer logic IC with 3-state output capability, manufactured by Texas Instruments in the 74LVC series. This device operates across a wide supply voltage range of 1.65V to 5.5V and is housed in a SOT-23-5 surface mount package. The part is currently discontinued at DiGi Electronics, making equivalent and substitute parts essential for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74LVC1G126DBVRG4 |
| Manufacturer | Texas Instruments |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 1 |
| 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 | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the 74LVC1G126DBVRG4 is determined by strict equivalence across the following critical parameters:
- Logic Type: Buffer, Non-Inverting
- Number of Elements: 1
- 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: SC-74A, SOT-753 or compatible surface mount packages
- Supplier Device Package: SOT-23-5 or equivalent footprint
Substitute parts are grouped into two categories: parametric equivalents from Texas Instruments (same base functionality, different packaging or product status) and manufacturer-recommended alternatives from Nexperia USA Inc. and onsemi that meet all electrical and mechanical specifications.
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Output Type | Current (mA) | Voltage Supply | Temp Range | Package | Product Status |
|---|---|---|---|---|---|---|---|---|
| 74LVC1G126DBVRG4 | Texas Instruments | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 125°C | SOT-23-5 | Discontinued |
| 74LVC1G125DBVRG4 | Texas Instruments | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 125°C | SOT-23-5 | Discontinued |
| 74LVC1G126DBVTG4 | Texas Instruments | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 125°C | SOT-23-5 | Discontinued |
| SN74LVC1G125DBVR | Texas Instruments | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 125°C | SOT-23-5 | Active |
| SN74LVC1G125DBVT | Texas Instruments | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 125°C | SOT-23-5 | Active |
| SN74LVC1G126DBVR | Texas Instruments | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 125°C | SOT-23-5 | Active |
| SN74LVC1G126DBVT | Texas Instruments | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 125°C | SOT-23-5 | Active |
| 74LVC1G126GW,125 | Nexperia USA Inc. | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 125°C | 5-TSSOP | Active |
| NC7SZ126M5X | onsemi | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 85°C | SOT-23-5 | Active |
| 74LVC1G125GV,125 | Nexperia USA Inc. | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 125°C | SC-74A | Active |
| 74LVC1G125GV-Q100 | Nexperia USA Inc. | Buffer, Non-Inverting | 3-State | 32, 32 | 1.65V ~ 5.5V | -40°C ~ 125°C | SC-74A | Active |
Engineering Selection Recommendations
For applications requiring the 74LVC1G126DBVRG4, the following selection criteria apply based on product status and compliance:
Primary Substitutes (Texas Instruments, Active Status): SN74LVC1G126DBVR and SN74LVC1G126DBVT are the preferred direct replacements. Both maintain identical electrical specifications and SOT-23-5 packaging with active product status, ensuring long-term availability and supply chain continuity. These parts carry 38,300 and 298,933 units in stock respectively.
Alternative Substitutes (Active Status, Different Manufacturers): 74LVC1G126GW,125 (Nexperia USA Inc.) provides equivalent functionality in a 5-TSSOP package. This part is suitable for designs where package footprint flexibility exists. NC7SZ126M5X (onsemi) offers SOT-23-5 compatibility but operates within a reduced temperature range of -40°C to 85°C, making it suitable only for applications not requiring the full -40°C to 125°C operating range.
Secondary Substitutes (Texas Instruments, Discontinued Status): 74LVC1G125DBVRG4 and 74LVC1G126DBVTG4 are parametric equivalents but remain discontinued. These should be considered only when existing inventory is available and long-term procurement is not a concern.
Automotive-Grade Option: 74LVC1G125GV-Q100 (Nexperia USA Inc.) is qualified to AEC-Q100 automotive standards and is suitable for automotive and high-reliability applications requiring formal qualification documentation.
All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, ensuring regulatory alignment with the original part.
Frequently Asked Questions (FAQ)
Q: Can I use SN74LVC1G125DBVR as a direct replacement for 74LVC1G126DBVRG4? A: Yes. Both parts are parametric equivalents with identical electrical specifications (1.65V ~ 5.5V supply, 32mA output current, -40°C ~ 125°C operating range) and SOT-23-5 packaging. The primary difference is product status; SN74LVC1G125DBVR is active with higher inventory availability.
Q: What is the difference between the 74LVC1G126 and 74LVC1G125 base product numbers? A: Both are single-element, non-inverting buffers with 3-state outputs and identical electrical parameters. The difference lies in internal control logic architecture. For direct functional substitution, either base number is acceptable provided all other parameters match.
Q: Is NC7SZ126M5X suitable for all applications using 74LVC1G126DBVRG4? A: NC7SZ126M5X is suitable only for applications operating within -40°C to 85°C. The original part supports -40°C to 125°C. If your application requires the full temperature range, use Texas Instruments or Nexperia alternatives instead.
Q: Can I use the 5-TSSOP package version (74LVC1G126GW,125) as a substitute? A: Yes, provided your PCB layout accommodates the 5-TSSOP footprint. The 5-TSSOP and SOT-23-5 packages have different pin configurations and land patterns. Electrical performance is identical; substitution is a mechanical/layout consideration only.
Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance status, matching the original 74LVC1G126DBVRG4.
Q: Should I consider the automotive-grade 74LVC1G125GV-Q100 for non-automotive applications? A: The automotive-grade qualification (AEC-Q100) is not required for non-automotive applications. Standard industrial-grade parts (SN74LVC1G126DBVT, SN74LVC1G126DBVR) are appropriate and typically offer better availability and cost efficiency.
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