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SN74AHC125MPWREP Equivalent & Substitute Parts
Part Overview
The SN74AHC125MPWREP is a non-inverting buffer logic IC manufactured by Texas Instruments, featuring 4 elements with 3-state output capability in a 14-TSSOP surface mount package. This device operates across a 2V to 5.5V supply voltage range and is classified as Active product status. Substitute parts are identified when equivalent electrical characteristics and mechanical packaging specifications align with the original component, enabling direct replacement in circuit applications without functional degradation.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SN74AHC125MPWREP |
| 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 | 8mA, 8mA |
| Voltage - Supply | 2V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| 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 SN74AHC125MPWREP are classified based on strict alignment with the following critical parameters:
Electrical Equivalence Criteria:
- Logic Type: Buffer, Non-Inverting
- Number of Elements: 4
- Number of Bits per Element: 1
- Output Type: 3-State
- Current - Output High, Low: 8mA, 8mA
- Voltage - Supply: 2V ~ 5.5V
Mechanical Compatibility Criteria:
- Package / Case: 14-TSSOP (0.173", 4.40mm Width)
- Mounting Type: Surface Mount
- Supplier Device Package: 14-TSSOP
Environmental & Compliance Criteria:
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
- Product Status: Active
Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical and mechanical specifications) and Manufacturer Recommended alternatives (same base functionality with potential grade or qualification variations).
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Logic Type | Elements | Output Type | Current (mA) | Voltage Supply | Temp Range (°C) | Package | Grade | RoHS |
|---|---|---|---|---|---|---|---|---|---|---|
| SN74AHC125MPWREP | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -55 ~ 125 | 14-TSSOP | Standard | ROHS3 |
| SN74AHC126QPWRQ1 | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -55 ~ 125 | 14-TSSOP | Automotive (AEC-Q100) | ROHS3 |
| 74AHC125PW,118 | Nexperia USA Inc. | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 14-TSSOP | Standard | ROHS3 |
| 74AHC125PW-Q100,11 | Nexperia USA Inc. | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 14-TSSOP | Automotive (AEC-Q100) | ROHS3 |
| 74AHC125T14-13 | Diodes Incorporated | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 14-TSSOP | Standard | ROHS3 |
| 74VHC125MTC | Fairchild Semiconductor | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 85 | 14-TSSOP | Standard | Not specified |
| 74VHC125MTCX | Fairchild Semiconductor | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 85 | 14-TSSOP | Standard | Not specified |
| 74VHC125PW,118 | NXP USA Inc. | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 14-TSSOP | Standard | Not specified |
| MC74VHC125DTR2G | onsemi | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -55 ~ 125 | 14-TSSOP | Standard | ROHS3 |
| MC74VHC126DTR2G | onsemi | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -55 ~ 125 | 14-TSSOP | Standard | ROHS3 |
| MC74VHCT125ADTRG | onsemi | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 8, 8 | 2V ~ 5.5V | -55 ~ 125 | 14-TSSOP | Standard | ROHS3 |
Engineering Selection Recommendations
Full Parametric Equivalents (Identical Specifications): MC74VHC125DTR2G and MC74VHCT125ADTRG from onsemi maintain complete electrical and mechanical equivalence with the original SN74AHC125MPWREP, including identical operating temperature range (-55°C to 125°C) and ROHS3 compliance. These parts are suitable for direct substitution in applications requiring no design modifications.
Automotive-Grade Alternatives: SN74AHC126QPWRQ1 (Texas Instruments) and 74AHC125PW-Q100,11 (Nexperia USA Inc.) provide AEC-Q100 automotive qualification with identical electrical specifications. These are appropriate for applications requiring automotive-grade components while maintaining full functional compatibility.
Standard-Grade Alternatives with Reduced Temperature Range: 74AHC125PW,118 (Nexperia USA Inc.), 74AHC125T14-13 (Diodes Incorporated), 74VHC125MTC, 74VHC125MTCX (Fairchild Semiconductor), and 74VHC125PW,118 (NXP USA Inc.) maintain electrical equivalence but operate within -40°C to 125°C or -40°C to 85°C ranges. These are suitable for applications where the reduced lower temperature limit does not conflict with system requirements.
Compliance Considerations: All recommended substitutes maintain ROHS3 compliance status or equivalent environmental standards. Parts from onsemi, Nexperia, and Texas Instruments carry explicit ROHS3 certification matching the original component.
Frequently Asked Questions (FAQ)
Q: Can I substitute MC74VHC125DTR2G for SN74AHC125MPWREP without circuit modifications? A: Yes. MC74VHC125DTR2G is a parametric equivalent with identical electrical characteristics (4-element non-inverting buffer, 3-state output, 8mA drive current, 2V-5.5V supply) and mechanical packaging (14-TSSOP). Both operate across -55°C to 125°C and maintain ROHS3 compliance.
Q: What is the difference between 74AHC125 and 74VHC125 series parts? A: Both series provide identical logic functionality and electrical specifications for this application. The primary difference lies in manufacturer implementation and product line designation. All listed 74VHC125 variants maintain the same 4-element non-inverting buffer configuration with 3-state output and 14-TSSOP packaging.
Q: Are automotive-grade parts (AEC-Q100) compatible with standard applications? A: Yes. Automotive-grade parts such as SN74AHC126QPWRQ1 and 74AHC125PW-Q100,11 meet or exceed standard specifications and are fully compatible with non-automotive applications. They provide additional qualification assurance without functional differences.
Q: Why do some substitutes have a -40°C lower operating limit instead of -55°C? A: Operating temperature range is a specified parameter that varies by manufacturer and product line. Parts with -40°C to 125°C ranges are suitable for applications where the system does not require operation below -40°C. Verify application requirements before selection.
Q: Is the 14-TSSOP package identical across all listed substitutes? A: Yes. All substitute parts use the 14-TSSOP (0.173", 4.40mm Width) surface mount package, ensuring mechanical and footprint compatibility with the original SN74AHC125MPWREP.
Q: Do all substitutes maintain the same 8mA output drive current? A: Yes. All listed substitute parts specify 8mA output current for both high and low states, matching the original component's drive capability.
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