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74LVC125APW,112 Equivalent & Substitute Parts
Part Overview
The 74LVC125APW,112 is a non-inverting buffer IC manufactured by Nexperia USA Inc., designed for logic-level signal buffering applications. This device features 4 independent buffer elements with 3-state output capability, operating across a supply voltage range of 1.2V to 3.6V. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74LVC125APW,112 |
| Manufacturer | Nexperia USA Inc. |
| 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 | 1.2V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the 74LVC125APW,112 is determined by the following critical parameters:
Functional Equivalence: Logic type (Buffer, Non-Inverting), number of elements (4), bits per element (1), and output type (3-State) must remain identical.
Electrical Compatibility: Output current capability (24mA, 24mA for high and low) and supply voltage range must support the application requirements. Substitute parts with supply voltage ranges that encompass or exceed the original specification are acceptable.
Thermal Performance: Operating temperature range must meet or exceed the original specification (-40°C ~ 125°C).
Package Compatibility: All substitute parts must use the 14-TSSOP package format to ensure PCB layout compatibility.
Compliance Requirements: RoHS3 compliance and MSL rating must be maintained for manufacturing and environmental standards.
Substitute parts are grouped into two categories: active products from major manufacturers (preferred for new designs) and alternative packaging options of the same base part number.
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Elements | Output Type | Current (mA) | Supply Voltage | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|
| 74LVC125APW,112 | Nexperia USA Inc. | Buffer, Non-Inverting | 4 | 3-State | 24, 24 | 1.2V ~ 3.6V | -40 ~ 125 | 14-TSSOP | Obsolete |
| 74LCX125MTCX | onsemi | Buffer, Non-Inverting | 4 | 3-State | 24, 24 | 2V ~ 3.6V | -40 ~ 85 | 14-TSSOP | Active |
| 74LCX125MTC | Fairchild Semiconductor | Buffer, Non-Inverting | 4 | 3-State | 24, 24 | 2V ~ 3.6V | -40 ~ 85 | 14-TSSOP | Active |
| 74LVC125AT14-13 | Diodes Incorporated | Buffer, Non-Inverting | 4 | 3-State | 24, 24 | 1.65V ~ 5.5V | -40 ~ 125 | 14-TSSOP | Active |
| CLVC125AQPWRG4Q1 | Texas Instruments | Buffer, Non-Inverting | 4 | 3-State | 24, 24 | 1.65V ~ 3.6V | -40 ~ 125 | 14-TSSOP | Active |
| MC74LCX125DTG | onsemi | Buffer, Non-Inverting | 4 | 3-State | 24, 24 | 2V ~ 3.6V | -40 ~ 85 | 14-TSSOP | Active |
| MC74LCX125DTR2G | onsemi | Buffer, Non-Inverting | 4 | 3-State | 24, 24 | 2V ~ 3.6V | -40 ~ 85 | 14-TSSOP | Active |
| SN74LVC125ADBR | Texas Instruments | Buffer, Non-Inverting | 4 | 3-State | 24, 24 | 1.65V ~ 3.6V | -40 ~ 125 | 14-SSOP | Active |
| SN74LVC125AIPWREP | Texas Instruments | Buffer, Non-Inverting | 4 | 3-State | 24, 24 | 1.65V ~ 3.6V | -40 ~ 85 | 14-TSSOP | Active |
| SN74LVC125APW | Texas Instruments | Buffer, Non-Inverting | 4 | 3-State | 24, 24 | 1.65V ~ 3.6V | -40 ~ 125 | 14-TSSOP | Active |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
SN74LVC125APW (Texas Instruments) and 74LVC125AT14-13 (Diodes Incorporated) are the preferred substitutes. Both maintain the original operating temperature range (-40°C ~ 125°C), support the full supply voltage specification, and are actively manufactured. SN74LVC125APW matches the original package format (14-TSSOP) and maintains identical thermal performance characteristics.
Extended Supply Voltage Option:
74LVC125AT14-13 from Diodes Incorporated offers an extended supply voltage range (1.65V ~ 5.5V), providing additional design flexibility for applications requiring higher voltage tolerance while maintaining the critical -40°C ~ 125°C operating temperature range.
Automotive-Grade Alternative:
CLVC125AQPWRG4Q1 (Texas Instruments) is qualified to AEC-Q100 automotive standards and maintains the full operating temperature range. This part is suitable for automotive and high-reliability applications.
Package Consideration:
SN74LVC125ADBR uses a 14-SSOP package instead of 14-TSSOP. While functionally equivalent, this package variant has different PCB footprint dimensions (0.209" vs 0.173" width) and requires layout verification before substitution.
Temperature-Limited Alternatives:
74LCX125MTCX, 74LCX125MTC, MC74LCX125DTG, and MC74LCX125DTR2G operate at reduced maximum temperature (-40°C ~ 85°C) and minimum supply voltage (2V). These are suitable only for applications not requiring the full -40°C ~ 125°C range or 1.2V operation.
All substitute parts maintain RoHS3 compliance and MSL rating of 1 (Unlimited).
Frequently Asked Questions (FAQ)
Q: Can I use 74LCX125MTCX as a direct replacement for 74LVC125APW,112?
A: 74LCX125MTCX is functionally equivalent but has operational limitations. It operates at -40°C ~ 85°C (versus -40°C ~ 125°C) and requires minimum 2V supply (versus 1.2V). Use this substitute only if your application does not require the full temperature range or operate below 2V supply voltage.
Q: What is the difference between 14-TSSOP and 14-SSOP packages?
A: Both are surface-mount packages with 14 pins, but 14-TSSOP has a width of 0.173" (4.40mm) while 14-SSOP is 0.209" (5.30mm). PCB footprints are not interchangeable without layout modification. Verify your PCB design before using SN74LVC125ADBR as a substitute.
Q: Is SN74LVC125APW suitable for new designs?
A: Yes. SN74LVC125APW is actively manufactured by Texas Instruments, maintains full compatibility with the original specification (-40°C ~ 125°C, 1.65V ~ 3.6V supply), and is the recommended substitute for new designs requiring the original performance envelope.
Q: Why does 74LVC125AT14-13 have a higher maximum supply voltage (5.5V)?
A: 74LVC125AT14-13 is designed with extended voltage tolerance. Applications requiring operation above 3.6V can use this part, though it remains fully compatible with the original 1.2V ~ 3.6V specification.
Q: Can I use CLVC125AQPWRG4Q1 in non-automotive applications?
A: Yes. CLVC125AQPWRG4Q1 is AEC-Q100 qualified, meaning it exceeds standard reliability requirements. It is suitable for any application requiring the original performance specifications and can be used in non-automotive designs where higher reliability is beneficial.
Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?
A: MSL 1 indicates the lowest moisture sensitivity level. These parts have unlimited shelf life and do not require special moisture-control handling during storage or assembly, simplifying procurement and manufacturing processes.
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