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SN74LVC125ADRG4 Equivalent & Substitute Parts
Part Overview
The SN74LVC125ADRG4 is a non-inverting buffer IC manufactured by Texas Instruments, part of the 74LVC logic series. This device features 4 elements with 1 bit per element, 3-state output capability, and operates across a supply voltage range of 1.65V to 3.6V. 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 | Texas Instruments |
| 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 SN74LVC125ADRG4 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
- Operating Temperature: -40°C ~ 125°C (TA)
- Package / Case: 14-SOIC (0.154", 3.90mm Width)
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
Substitute parts are categorized into two groups:
Group 1: Direct Equivalents (SN74LVC125 Base Product) Parts that maintain identical electrical and mechanical specifications with variations only in packaging format (Cut Tape, Tube, or Tape & Reel).
Group 2: Parametric Equivalents (SN74LVC125 and SN74LVC126 Base Products) Parts that meet all electrical and mechanical requirements but may include additional qualifications (automotive grade, AEC-Q100) or alternative manufacturers while maintaining full functional compatibility.
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Elements | Output Type | Current (mA) | Voltage Supply | Temp Range | Package | Product Status | Grade |
|---|---|---|---|---|---|---|---|---|---|---|
| SN74LVC125ADRG4 | 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 |
| SN74LVC125AD | 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) |
| 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
Primary Recommendation: SN74LVC125ADR This part is the manufacturer-recommended direct equivalent with active product status. It maintains identical electrical specifications and 14-SOIC packaging as the discontinued SN74LVC125ADRG4. The primary difference is packaging format (Cut Tape & Digi-Reel vs. Digi-Reel), which does not affect electrical performance or PCB compatibility.
Secondary Recommendation: SN74LVC125ADRG3 This parametric equivalent offers active status with identical electrical and mechanical specifications. It is available in Tape & Reel packaging and provides higher inventory availability (3504 Pcs).
For Automotive Applications: SN74LVC125AQDRQ1 or SN74LVC126AQDRG4Q1 If the design requires automotive-grade qualification with AEC-Q100 certification, these parts provide the necessary compliance while maintaining full electrical equivalence. The SN74LVC126AQDRG4Q1 offers the highest inventory level (9583 Pcs) among automotive-qualified options.
Alternative Manufacturer: 74LVC126AS14-13 (Diodes Incorporated) This part from Diodes Incorporated meets all electrical and mechanical requirements and is available in active status with substantial inventory (5100 Pcs). It represents a cross-manufacturer equivalent suitable for applications where supplier diversification is required.
Frequently Asked Questions (FAQ)
Q: Can I use SN74LVC126 parts as substitutes for SN74LVC125ADRG4? A: Yes. The SN74LVC126 base product maintains identical electrical specifications (logic type, element count, output type, current ratings, voltage supply, and operating temperature) and package format (14-SOIC). The functional difference between 74LVC125 and 74LVC126 does not affect substitution eligibility for this application.
Q: What is the difference between packaging formats (Cut Tape, Tube, Tape & Reel)? A: Packaging format affects procurement and handling but does not impact electrical performance or PCB compatibility. Cut Tape & Digi-Reel is suitable for automated assembly lines. Tube packaging is used for manual assembly. Tape & Reel is standard for high-volume production. All formats contain identical die and electrical specifications.
Q: Can I substitute the commercial-grade SN74LVC125ADR for the discontinued SN74LVC125ADRG4 in automotive applications? A: Commercial-grade parts do not carry AEC-Q100 automotive qualification. For automotive applications requiring qualification compliance, use SN74LVC125AQDRQ1 or SN74LVC126AQDRG4Q1.
Q: Is the Diodes Incorporated 74LVC126AS14-13 fully compatible with the original design? A: Yes. This part meets all electrical and mechanical specifications. Cross-manufacturer substitution is valid when electrical parameters, package format, and pin configuration are identical. Verify PCB footprint compatibility before implementation.
Q: What inventory considerations should guide my selection? A: SN74LVC126AQDRG4Q1 offers the highest inventory (9583 Pcs). For non-automotive applications, SN74LVC125ADRG3 provides 3504 Pcs. All listed parts are in active production status with new original stock available.
Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original part specifications.
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