74LVC125ADB,112 Equivalent & Substitute Parts

Part Overview

The 74LVC125ADB,112 is a non-inverting buffer IC manufactured by Nexperia USA Inc., designed for logic-level signal buffering applications. This device features 4 elements with 1 bit per element and 3-state output capability, operating across a supply voltage range of 1.2V to 3.6V. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LVC125ADB,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-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 74LVC125ADB,112 are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Logic type: Buffer, Non-Inverting
Number of elements: 4
Number of bits per element: 1
Output type: 3-State
Output current capability: 24mA (high and low)
Supply voltage range: Minimum 1.2V to 3.6V compatibility
Operating temperature range: -40°C to 125°C minimum
Mounting type: Surface Mount
RoHS3 compliance

Package Compatibility Groups:

14-SSOP package (0.209", 5.30mm Width): Direct pin-compatible substitutes
14-TSSOP package (0.173", 4.40mm Width): Functionally equivalent with different footprint

Substitutes are organized by package type and product status (active vs. discontinued), as these factors directly impact procurement and long-term availability.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Output Current (mA)	Supply Voltage	Temp Range (°C)	Package	Status
74LVC125ADB,112	Nexperia USA Inc.	Buffer, Non-Inverting	4 x 1-bit	24/24	1.2V ~ 3.6V	-40 ~ 125	14-SSOP	Obsolete
74LVC125APW,118	Nexperia USA Inc.	Buffer, Non-Inverting	4 x 1-bit	24/24	1.2V ~ 3.6V	-40 ~ 125	14-TSSOP	Active
74LCX125MTC	Fairchild Semiconductor	Buffer, Non-Inverting	4 x 1-bit	24/24	2V ~ 3.6V	-40 ~ 85	14-TSSOP	Active
74LCX125MTCX	onsemi	Buffer, Non-Inverting	4 x 1-bit	24/24	2V ~ 3.6V	-40 ~ 85	14-TSSOP	Active
CLVC125AQPWRG4Q1	Texas Instruments	Buffer, Non-Inverting	4 x 1-bit	24/24	1.65V ~ 3.6V	-40 ~ 125	14-TSSOP	Active
SN74LVC125ADBR	Texas Instruments	Buffer, Non-Inverting	4 x 1-bit	24/24	1.65V ~ 3.6V	-40 ~ 125	14-SSOP	Active
SN74LVC125AIPWREP	Texas Instruments	Buffer, Non-Inverting	4 x 1-bit	24/24	1.65V ~ 3.6V	-40 ~ 85	14-TSSOP	Active
SN74LVC125APW	Texas Instruments	Buffer, Non-Inverting	4 x 1-bit	24/24	1.65V ~ 3.6V	-40 ~ 125	14-TSSOP	Active
SN74LVC125APWRE4	Texas Instruments	Buffer, Non-Inverting	4 x 1-bit	24/24	1.65V ~ 3.6V	-40 ~ 125	14-TSSOP	Discontinued at DiGi Electronics
SN74LVC125APWT	Texas Instruments	Buffer, Non-Inverting	4 x 1-bit	24/24	1.65V ~ 3.6V	-40 ~ 125	14-TSSOP	Active
SN74LVC125AQPWRQ1	Texas Instruments	Buffer, Non-Inverting	4 x 1-bit	24/24	1.65V ~ 3.6V	-40 ~ 125	14-TSSOP	Active

Engineering Selection Recommendations

14-SSOP Package (Direct Footprint Match):

SN74LVC125ADBR (Texas Instruments): Active product with identical package and extended temperature range (-40°C to 125°C). ROHS3 compliant. Recommended for direct replacement in existing PCB layouts.

14-TSSOP Package (Functionally Equivalent, Different Footprint):

74LVC125APW,118 (Nexperia USA Inc.): Active product from original manufacturer. Maintains full voltage and temperature specifications of the obsolete part. ROHS3 compliant.
SN74LVC125APW (Texas Instruments): Active product with extended temperature range (-40°C to 125°C). ROHS3 compliant. Suitable for new designs.
SN74LVC125APWT (Texas Instruments): Active product with identical specifications to SN74LVC125APW. ROHS3 compliant.
SN74LVC125AQPWRQ1 (Texas Instruments): Active automotive-grade product (AEC-Q100 qualified) with extended temperature range. ROHS3 compliant. Recommended for automotive applications.
CLVC125AQPWRG4Q1 (Texas Instruments): Active automotive-grade product (AEC-Q100 qualified). ROHS3 compliant. Suitable for automotive applications.

Alternative Series (Reduced Temperature Range):

74LCX125MTCX (onsemi): Active product with reduced operating temperature range (-40°C to 85°C) and minimum supply voltage of 2V. ROHS3 compliant. Suitable only for applications not requiring full -40°C to 125°C range.
74LCX125MTC (Fairchild Semiconductor): Active product with reduced operating temperature range (-40°C to 85°C) and minimum supply voltage of 2V. Suitable only for applications not requiring full -40°C to 125°C range.

Avoid:

SN74LVC125APWRE4: Discontinued at DiGi Electronics; procurement may be limited.

Frequently Asked Questions (FAQ)

Q: Can I use a 14-TSSOP package substitute in place of the 14-SSOP original? A: No, not without PCB redesign. The 14-TSSOP package (0.173", 4.40mm width) has a different footprint than the 14-SSOP package (0.209", 5.30mm width). Pin spacing and pad layout differ. For existing PCB designs, use SN74LVC125ADBR, which maintains the 14-SSOP package. For new designs, 14-TSSOP alternatives are acceptable.

Q: What is the difference between 74LVC and 74LCX series? A: The 74LVC series supports a supply voltage range of 1.2V to 3.6V with operating temperature range of -40°C to 125°C. The 74LCX series has a minimum supply voltage of 2V and reduced operating temperature range of -40°C to 85°C. Use 74LVC series for applications requiring full voltage and temperature specifications.

Q: Are automotive-grade versions available? A: Yes. CLVC125AQPWRG4Q1 and SN74LVC125AQPWRQ1 are both AEC-Q100 qualified automotive-grade products. Both are active and ROHS3 compliant.

Q: Why is the original 74LVC125ADB,112 obsolete? A: The part is listed as obsolete by Nexperia USA Inc. Active alternatives from the same manufacturer (74LVC125APW,118) and other manufacturers (Texas Instruments, onsemi) provide equivalent functionality and are recommended for new designs and ongoing procurement.

Q: Can I substitute a part with a lower minimum supply voltage? A: Only if your application operates at or above that part's minimum voltage. The 74LCX series requires minimum 2V supply, while 74LVC series operates from 1.2V. If your design uses 1.2V to 2V supply range, use only 74LVC series parts.

Q: What does ROHS3 compliance mean? A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, mercury, cadmium, and other hazardous materials. All listed substitutes are ROHS3 compliant.

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