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74HC125PW,112 Equivalent & Substitute Parts
Part Overview
The 74HC125PW,112 is a non-inverting buffer logic IC manufactured by Nexperia USA Inc., featuring 4 elements with 1 bit per element and 3-state output capability. This device operates across a 2V to 6V supply voltage range and is housed in a 14-TSSOP surface mount package. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. Substitute parts maintain identical functional specifications while offering active product status from alternative manufacturers.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Manufacturer Part Number | 74HC125PW,112 |
| Manufacturer | Nexperia USA Inc. |
| Base Product Number | 74HC125 |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Number of Bits per Element | 1 |
| Output Type | 3-State |
| Current - Output High, Low | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the 74HC125PW,112 is determined by strict equivalence across the following critical parameters:
Functional Equivalence Requirements:
- Logic type: Buffer, Non-Inverting
- Number of elements: 4
- Number of bits per element: 1
- Output type: 3-State
- Current output specifications: 7.8mA (high and low)
- Supply voltage range: 2V ~ 6V
- Package type: 14-TSSOP surface mount
Acceptable Variations:
- Operating temperature range may extend beyond the original specification (e.g., -55°C ~ 125°C is acceptable)
- Packaging format (Cut Tape, Tape & Reel, Tube, Bulk) does not affect functional compatibility
- Manufacturer differences are acceptable provided all electrical and mechanical parameters align
- Product status transition from obsolete to active is the primary benefit of substitution
- Automotive grade and AEC-Q100 qualification are optional enhancements
Non-Substitutable Variations:
- Package case type must remain 14-TSSOP; 14-SSOP variants are excluded due to different physical dimensions
- Supply voltage range must maintain 2V ~ 6V minimum specification
- Output current specifications must match 7.8mA for both high and low states
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Elements | Output Type | Current (mA) | Supply Voltage | Temp Range (°C) | Package | Status | Packaging Format |
|---|---|---|---|---|---|---|---|---|---|---|
| 74HC125PW,112 | Nexperia USA Inc. | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 125 | 14-TSSOP | Obsolete | - |
| CD74HC125QPWRG4Q1 | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 125 | 14-TSSOP | Active | Tape & Reel (TR) |
| CD74HC125QPWRQ1 | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 125 | 14-TSSOP | Active | Cut Tape (CT) & Digi-Reel® |
| MC74HC125ADTR2G | onsemi | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -55 ~ 125 | 14-TSSOP | Active | Cut Tape (CT) & Digi-Reel® |
| MC74HC125ADTG | onsemi | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -55 ~ 125 | 14-TSSOP | Active | Tube |
| MM74HC125MTC | Fairchild Semiconductor | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 14-TSSOP | Active | Bulk |
| MM74HC125MTCX | onsemi | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 14-TSSOP | Active | Tape & Reel (TR) |
| SN74HC125APWR | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 14-TSSOP | Active | Cut Tape (CT) & Digi-Reel® |
| SN74HC125DBR | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 14-SSOP | Active | Cut Tape (CT) & Digi-Reel® |
| SN74HC125IPWRG4Q1 | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 14-TSSOP | Active | Tape & Reel (TR) |
| SN74HC125PWR | Texas Instruments | Buffer, Non-Inverting | 4 x 1-bit | 3-State | 7.8 / 7.8 | 2V ~ 6V | -40 ~ 85 | 14-TSSOP | Active | Cut Tape (CT) & Digi-Reel® |
Engineering Selection Recommendations
Direct Substitutes (14-TSSOP Package):
CD74HC125QPWRG4Q1 and CD74HC125QPWRQ1 from Texas Instruments are functionally equivalent with matching temperature range (-40°C ~ 125°C) and active product status. Both include AEC-Q100 automotive qualification, providing enhanced reliability for automotive applications. These parts are available in high inventory quantities and support both tape & reel and cut tape packaging formats.
MC74HC125ADTR2G from onsemi extends the operating temperature range to -55°C ~ 125°C, offering superior performance in extreme low-temperature environments while maintaining all other electrical specifications. This part is suitable for applications requiring extended temperature operation.
MC74HC125ADTG provides identical electrical specifications to MC74HC125ADTR2G with tube packaging, appropriate for lower-volume procurement or manual assembly processes.
SN74HC125APWR, SN74HC125IPWRG4Q1, and SN74HC125PWR from Texas Instruments are functionally equivalent with operating temperature range of -40°C ~ 85°C. SN74HC125IPWRG4Q1 includes AEC-Q100 automotive qualification. These parts maintain full compatibility with the original specification and are available in high inventory.
MM74HC125MTC and MM74HC125MTCX operate within -40°C ~ 85°C temperature range. MM74HC125MTCX is available in tape & reel format with ROHS3 compliance, while MM74HC125MTC is supplied in bulk packaging.
Non-Substitutable Variant:
SN74HC125DBR uses a 14-SSOP package (0.209", 5.30mm width) instead of 14-TSSOP (0.173", 4.40mm width). Physical package incompatibility with PCB layouts designed for 14-TSSOP prevents direct substitution despite identical electrical characteristics.
Frequently Asked Questions (FAQ)
Q: Can I substitute the 74HC125PW,112 with any of the listed parts?
A: Direct substitution is possible only with parts using the 14-TSSOP package. The SN74HC125DBR, which uses 14-SSOP packaging, is not compatible due to different physical dimensions and pin spacing. All other listed parts maintain full electrical and mechanical compatibility.
Q: What is the difference between the various Texas Instruments 74HC125 variants?
A: Texas Instruments offers multiple packaging formats and temperature grades. CD74HC125QPWRG4Q1 and CD74HC125QPWRQ1 maintain the full -40°C ~ 125°C temperature range with automotive qualification. SN74HC125APWR, SN74HC125IPWRG4Q1, and SN74HC125PWR operate at -40°C ~ 85°C, with SN74HC125IPWRG4Q1 including automotive qualification. Selection depends on temperature requirements and packaging format needs.
Q: Does the packaging format (Tape & Reel, Cut Tape, Tube, Bulk) affect electrical performance?
A: Packaging format does not affect electrical performance or functional compatibility. Selection is based on procurement volume, assembly process requirements, and inventory management. Tape & Reel and Cut Tape formats are standard for automated assembly, while Tube and Bulk formats serve different supply chain requirements.
Q: Why do some substitutes have extended temperature ranges?
A: MC74HC125ADTR2G and MC74HC125ADTG from onsemi specify -55°C ~ 125°C operating range compared to the original -40°C ~ 125°C. Extended low-temperature capability is an enhancement that does not compromise compatibility; these parts are suitable for applications requiring operation in extreme cold environments.
Q: Are all substitute parts RoHS3 compliant?
A: Most listed substitutes are RoHS3 compliant. MM74HC125MTC does not specify RoHS status in the provided data. Verify RoHS compliance requirements with your specific application and procurement specifications.
Q: What does AEC-Q100 qualification mean?
A: AEC-Q100 is an automotive electronics qualification standard. Parts bearing this qualification (CD74HC125QPWRG4Q1, CD74HC125QPWRQ1, and SN74HC125IPWRG4Q1) have undergone enhanced reliability testing and are approved for automotive applications. This qualification is optional for general-purpose applications but required for automotive designs.
Q: Can I use a substitute with a narrower temperature range than the original?
A: Substitutes with narrower temperature ranges (-40°C ~ 85°C versus -40°C ~ 125°C) are compatible only if your application does not require operation above 85°C. Verify your system's maximum operating temperature before selecting parts with reduced temperature specifications.
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