74LVC125APW-Q100J Equivalent & Substitute Parts

Part Overview

The 74LVC125APW-Q100J is a non-inverting buffer logic integrated circuit manufactured by Nexperia USA Inc. in the 74LVC series. This device functions as a 4-element buffer with 3-state output capability, designed for low-voltage digital signal buffering and line driving applications. The part is classified as Active status and carries automotive-grade qualification (AEC-Q100), making it suitable for automotive and industrial applications requiring reliable signal conditioning. Substitute parts are identified based on matching electrical characteristics, package specifications, and functional equivalence within the 74LVC and 74LCX logic families.

Key Parameters

Parameter	Specification
Manufacturer Part Number	74LVC125APW-Q100J
Manufacturer	Nexperia USA Inc.
Logic Type	Buffer, Non-Inverting
Number of Elements	4
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)
Grade	Automotive
Qualification	AEC-Q100
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 74LVC125APW-Q100J are identified through strict parametric matching across the following critical criteria:

Electrical Equivalence 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: 1.2V ~ 3.6V (or compatible subset)
Operating Temperature: -40°C ~ 125°C (TA) or compatible range

Mechanical Equivalence Parameters:

Package / Case: 14-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
Supplier Device Package: 14-TSSOP

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitutes are grouped into two categories: Parametric Equivalents (identical electrical and mechanical specifications within the same manufacturer) and Direct Equivalents (functionally equivalent parts from alternative manufacturers with compatible specifications).

Parameter Comparison

Parameter	74LVC125APW-Q100J	74LVC125APW,118	74LVC126APW,118	74LVC126APW-Q100J	MC74LCX125DTR2G
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	onsemi
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	4	4	4	4	4
Output Type	3-State	3-State	3-State	3-State	3-State
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Voltage - Supply	1.2V ~ 3.6V	1.2V ~ 3.6V	1.2V ~ 3.6V	1.2V ~ 3.6V	2V ~ 3.6V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP
Grade	Automotive	Commercial	Commercial	Automotive	Commercial
Qualification	AEC-Q100	None	None	AEC-Q100	None
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Automotive Applications (AEC-Q100 Required): The 74LVC126APW-Q100J is the primary substitute when automotive-grade qualification is mandatory. Both the main part (74LVC125APW-Q100J) and this substitute carry AEC-Q100 certification and operate across the full temperature range of -40°C to 125°C. The 74LVC126APW-Q100J maintains identical electrical specifications and 14-TSSOP packaging, ensuring direct functional replacement in automotive designs.

For Commercial Applications (AEC-Q100 Not Required): The 74LVC125APW,118 and 74LVC126APW,118 are suitable substitutes for non-automotive applications. These parts maintain all critical electrical parameters and packaging specifications but lack automotive qualification. The MC74LCX125DTR2G from onsemi provides an alternative from a different manufacturer with compatible electrical characteristics, though it operates within a reduced temperature range (-40°C to 85°C) and narrower supply voltage range (2V to 3.6V).

Supply Voltage Consideration: Applications requiring operation below 2V should not use the MC74LCX125DTR2G, as its minimum supply voltage is 2V. The Nexperia 74LVC series parts support 1.2V minimum supply voltage.

Temperature Range Consideration: Applications requiring operation above 85°C must use Nexperia 74LVC series parts, which support up to 125°C. The onsemi MC74LCX125DTR2G is limited to 85°C maximum.

Frequently Asked Questions (FAQ)

Q: Can 74LVC125APW,118 replace 74LVC125APW-Q100J in automotive applications? A: No. While electrically equivalent, the 74LVC125APW,118 lacks AEC-Q100 automotive qualification. Use 74LVC126APW-Q100J for automotive designs requiring qualification.

Q: What is the functional difference between 74LVC125 and 74LVC126? A: Both are 4-element non-inverting buffers with 3-state outputs in 14-TSSOP packaging. The primary difference lies in internal control logic architecture, but electrical specifications and pin compatibility remain equivalent for substitution purposes.

Q: Is MC74LCX125DTR2G a direct replacement for 74LVC125APW-Q100J? A: MC74LCX125DTR2G is functionally equivalent but with operational constraints. It operates at 2V minimum (versus 1.2V) and 85°C maximum (versus 125°C). Use only in applications within these narrower ranges.

Q: Are all substitute parts in 14-TSSOP packaging? A: Yes. All listed substitutes use 14-TSSOP (0.173", 4.40mm Width) surface mount packaging, ensuring mechanical compatibility.

Q: Do all substitutes meet RoHS3 compliance? A: Yes. All listed parts are ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: Which substitute has the highest inventory availability? A: 74LVC125APW,118 has 67,937 pieces in stock, compared to 3,110 pieces for the main part.

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