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SN74LVC126ADRG4 Equivalent & Substitute Parts
Part Overview
The SN74LVC126ADRG4 is a non-inverting buffer IC manufactured by Texas Instruments, featuring 4 elements with 1 bit per element and 3-state output capability. This device operates across a supply voltage range of 1.65V to 3.6V and is housed in a 14-SOIC package. The part is currently discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Base Product Number | 74LVC126 |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Number of Bits per Element | 1 |
| Output Type | 3-State |
| Current - Output High, Low | 24mA, 24mA |
| Voltage - Supply | 1.65V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the SN74LVC126ADRG4 is determined by strict equivalence across the following critical parameters:
- Logic Type: Buffer, Non-Inverting
- Number of Elements: 4
- Number of Bits per Element: 1
- Output Type: 3-State
- Current - Output High, Low: 24mA, 24mA
- Voltage - Supply: 1.65V ~ 3.6V (minimum requirement)
- Operating Temperature: -40°C ~ 125°C (TA)
- Package / Case: 14-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- RoHS Status: ROHS3 Compliant
Substitute parts are grouped into two categories: Texas Instruments SN74LVC125 and SN74LVC126 series variants with different packaging options (Cut Tape, Tape & Reel), product grades (commercial and automotive AEC-Q100 qualified), and alternative manufacturers (Nexperia USA Inc., Diodes Incorporated) offering the same functional and electrical specifications.
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Elements | Output Type | Current (mA) | Voltage Supply | Temp Range | Package | Product Status | Grade |
|---|---|---|---|---|---|---|---|---|---|---|
| SN74LVC126ADRG4 | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.65V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Discontinued | Commercial |
| SN74LVC125ADR | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.65V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Active | Commercial |
| SN74LVC125ADRG3 | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.65V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Active | Commercial |
| SN74LVC125ADT | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.65V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Active | Commercial |
| SN74LVC125AQDRQ1 | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.65V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Active | Automotive (AEC-Q100) |
| SN74LVC126ADR | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.65V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Active | Commercial |
| SN74LVC126ADT | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.65V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Active | Commercial |
| SN74LVC126AQDRG4Q1 | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.65V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Active | Automotive (AEC-Q100) |
| SN74LVC126AQDRQ1 | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.65V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Active | Automotive (AEC-Q100) |
| 74LVC126AD,118 | Nexperia USA Inc. | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.2V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Active | Commercial |
| 74LVC126AS14-13 | Diodes Incorporated | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 24, 24 | 1.65V ~ 3.6V | -40°C ~ 125°C | 14-SOIC | Active | Commercial |
Engineering Selection Recommendations
For direct replacement of the discontinued SN74LVC126ADRG4, select from active Texas Instruments SN74LVC126 variants. The SN74LVC126ADR and SN74LVC126ADT maintain identical electrical and thermal specifications with current product availability. Both are ROHS3 compliant and carry MSL 1 rating.
For automotive applications requiring AEC-Q100 qualification, the SN74LVC126AQDRG4Q1 and SN74LVC126AQDRQ1 provide equivalent functionality with automotive-grade certification.
The SN74LVC125 series (SN74LVC125ADR, SN74LVC125ADRG3, SN74LVC125ADT) offers functional equivalence with identical electrical parameters and packaging. The SN74LVC125AQDRQ1 provides automotive-grade qualification within this series.
Alternative manufacturers Nexperia USA Inc. (74LVC126AD,118) and Diodes Incorporated (74LVC126AS14-13) offer parametric equivalents meeting the same functional and electrical requirements. The Nexperia part supports extended lower voltage operation (1.2V minimum) compared to the 1.65V minimum of other variants.
Frequently Asked Questions (FAQ)
Q: Can SN74LVC125 series parts substitute for SN74LVC126 series parts?
A: Yes. Both series share identical logic type (Buffer, Non-Inverting), element count (4 x 1-bit), output type (3-State), current ratings (24mA, 24mA), supply voltage range (1.65V ~ 3.6V), operating temperature range (-40°C ~ 125°C), and package specification (14-SOIC). Functional equivalence is established across these parameters.
Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging options?
A: Cut Tape and Tape & Reel represent different supplier packaging formats for the same die and package. Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) variants are electrically and functionally identical. Selection depends on procurement volume and assembly process requirements.
Q: Are automotive-grade variants (AEC-Q100) compatible with commercial applications?
A: Automotive-grade parts (SN74LVC125AQDRQ1, SN74LVC126AQDRG4Q1, SN74LVC126AQDRQ1) meet or exceed commercial specifications and are compatible with commercial applications. These parts carry additional qualification testing and documentation required for automotive use.
Q: Does the Nexperia 74LVC126AD,118 part have different electrical characteristics?
A: The Nexperia part supports a lower minimum supply voltage (1.2V versus 1.65V) while maintaining all other electrical parameters. This extended voltage range does not affect compatibility in designs operating within the 1.65V ~ 3.6V range.
Q: What is the significance of the ROHS3 compliance and MSL 1 rating?
A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances directives. MSL 1 (Unlimited) indicates the part has unlimited shelf life and requires no special moisture control during storage or handling, simplifying procurement and inventory management.
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