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SN74LVC125ADRG3 Equivalent & Substitute Parts
Part Overview
The SN74LVC125ADRG3 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 surface mount package. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to address inventory availability, packaging format requirements, or specific application qualifications such as automotive grade certifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| 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 eligibility for the SN74LVC125ADRG3 is determined by the following critical parameters: logic type (buffer, non-inverting), number of elements (4), bits per element (1), output type (3-state), output current capability (24mA minimum for both high and low), supply voltage range (minimum 1.65V, maximum 3.6V), operating temperature range (-40°C to 125°C), package type (14-SOIC), and surface mount mounting type. Parts are grouped into three categories: parametric equivalents from Texas Instruments with identical electrical specifications but different packaging formats; manufacturer-recommended equivalents from alternative suppliers (Nexperia, Diodes Incorporated, onsemi) that maintain core functionality; and automotive-grade variants qualified to AEC-Q100 standards for applications requiring automotive qualification.
Parameter Comparison
| Part Number | Manufacturer | Packaging | Logic Type | Elements | Output Current (mA) | Supply Voltage (V) | Temp Range (°C) | Grade | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|
| SN74LVC125ADRG3 | Texas Instruments | Tape & Reel (TR) | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 1.65 ~ 3.6 | -40 ~ 125 | Standard | 3504 |
| SN74LVC125ADR | Texas Instruments | Cut Tape (CT) & Digi-Reel® | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 1.65 ~ 3.6 | -40 ~ 125 | Standard | 2600 |
| SN74LVC125ADT | Texas Instruments | Tape & Reel (TR) | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 1.65 ~ 3.6 | -40 ~ 125 | Standard | 2309 |
| SN74LVC125AQDRQ1 | Texas Instruments | Tape & Reel (TR) | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 1.65 ~ 3.6 | -40 ~ 125 | Automotive (AEC-Q100) | 3113 |
| SN74LVC126ADR | Texas Instruments | Cut Tape (CT) & Digi-Reel® | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 1.65 ~ 3.6 | -40 ~ 125 | Standard | 1970 |
| SN74LVC126ADT | Texas Instruments | Tape & Reel (TR) | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 1.65 ~ 3.6 | -40 ~ 125 | Standard | 1882 |
| SN74LVC126AQDRG4Q1 | Texas Instruments | Tape & Reel (TR) | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 1.65 ~ 3.6 | -40 ~ 125 | Automotive (AEC-Q100) | 9583 |
| SN74LVC126AQDRQ1 | Texas Instruments | Tape & Reel (TR) | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 1.65 ~ 3.6 | -40 ~ 125 | Automotive (AEC-Q100) | 2224 |
| 74LVC125AD,118 | Nexperia USA Inc. | Tape & Reel (TR) | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 1.2 ~ 3.6 | -40 ~ 125 | Standard | 98042 |
| 74LVC125AS14-13 | Diodes Incorporated | Tape & Reel (TR) | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 1.65 ~ 5.5 | -40 ~ 125 | Standard | 35516 |
| MC74LCX125DG | onsemi | Tube | Buffer, Non-Inverting | 4 x 1-bit | 24, 24 | 2.0 ~ 3.6 | -40 ~ 85 | Standard | 8990 |
Engineering Selection Recommendations
Texas Instruments Parametric Equivalents (SN74LVC125ADR, SN74LVC125ADT): These parts maintain identical electrical specifications to the SN74LVC125ADRG3 with only packaging format differences. Selection between these and the original part depends on procurement requirements for cut tape versus tape & reel formats. All remain ROHS3 compliant with active product status.
Texas Instruments Automotive Grade (SN74LVC125AQDRQ1, SN74LVC126AQDRG4Q1, SN74LVC126AQDRQ1): These variants carry AEC-Q100 automotive qualification and are suitable for applications requiring automotive-grade components. Electrical parameters remain consistent with standard grades. The SN74LVC126AQDRG4Q1 variant offers the highest inventory availability (9583 pcs) among automotive options.
SN74LVC126 Series (SN74LVC126ADR, SN74LVC126ADT, SN74LVC126AQDRG4Q1, SN74LVC126AQDRQ1): These parts share identical functional and electrical characteristics with the SN74LVC125 series but represent a different base product number. Substitution is valid based on matching core parameters.
Nexperia 74LVC125AD,118: This part extends the minimum supply voltage to 1.2V (versus 1.65V for Texas Instruments variants) while maintaining the 3.6V maximum. High inventory availability (98042 pcs) supports applications with extended low-voltage requirements. ROHS3 compliant and active status.
Diodes Incorporated 74LVC125AS14-13: This variant supports an extended maximum supply voltage of 5.5V (versus 3.6V for other options) while maintaining the 1.65V minimum. Suitable for applications requiring higher voltage tolerance. ROHS3 compliant with active status and substantial inventory (35516 pcs).
onsemi MC74LCX125DG: This part operates within a narrower supply voltage range (2.0V to 3.6V) and has a reduced maximum operating temperature of 85°C (versus 125°C for other options). Tube packaging format differs from standard tape & reel. Selection requires confirmation that the 85°C maximum temperature rating meets application requirements.
Frequently Asked Questions (FAQ)
Q: Can I substitute SN74LVC125ADR for SN74LVC125ADRG3? A: Yes. Both parts are Texas Instruments products with identical electrical specifications, logic type, element count, output type, current ratings, supply voltage range, and operating temperature range. The difference is packaging format: SN74LVC125ADR uses Cut Tape & Digi-Reel format while SN74LVC125ADRG3 uses Tape & Reel format. Functional compatibility is complete.
Q: What is the difference between SN74LVC125 and SN74LVC126 series? A: Both series maintain identical core electrical parameters: 4-element non-inverting buffers with 3-state output, 24mA output current, 1.65V to 3.6V supply voltage, and -40°C to 125°C operating temperature in 14-SOIC packages. The base product numbers differ, but substitution is valid based on matching functional specifications.
Q: Can I use the Nexperia 74LVC125AD,118 in a 1.65V minimum supply application? A: Yes. The Nexperia part supports 1.2V minimum supply voltage, which is lower than the 1.65V minimum of the Texas Instruments SN74LVC125ADRG3. This provides additional margin for low-voltage applications. All other electrical parameters match.
Q: Is the Diodes Incorporated 74LVC125AS14-13 suitable for 5V systems? A: Yes. This part supports supply voltages up to 5.5V, making it suitable for 5V system applications. The Texas Instruments variants are limited to 3.6V maximum. All other core parameters remain compatible.
Q: What is the temperature limitation of the onsemi MC74LCX125DG? A: The onsemi part has a maximum operating temperature of 85°C, compared to 125°C for other listed substitutes. Applications requiring operation above 85°C require selection of alternative parts. Confirm application temperature requirements before selection.
Q: Are all listed parts ROHS3 compliant? A: Yes. All substitute parts listed carry ROHS3 compliance status. All maintain MSL 1 (unlimited) moisture sensitivity level.
Q: What packaging formats are available? A: Tape & Reel (TR) is the most common format across Texas Instruments variants. Cut Tape & Digi-Reel format is available for SN74LVC125ADR and SN74LVC126ADR. Tube packaging is available for the onsemi MC74LCX125DG. Selection depends on procurement and assembly requirements.
Q: Can I use automotive-grade variants in non-automotive applications? A: Yes. Automotive-grade parts (SN74LVC125AQDRQ1, SN74LVC126AQDRG4Q1, SN74LVC126AQDRQ1) meet AEC-Q100 qualification and maintain all standard electrical specifications. They are suitable for any application requiring the specified parameters, with the added benefit of automotive qualification.
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