SN74LVC125AMDREP Equivalent & Substitute Parts

Part Overview

The SN74LVC125AMDREP is a non-inverting buffer IC manufactured by Texas Instruments, designed for logic signal buffering applications with 3-state output capability. This device operates across a supply voltage range of 1.65V to 3.6V and is housed in a 14-SOIC surface mount package. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and compatibility options for applications requiring non-inverting buffer functionality with identical or compatible electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN74LVC125AMDREP
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	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V
Operating Temperature	-55°C ~ 125°C (TA)
Package / Case	14-SOIC (0.154", 3.90mm 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 SN74LVC125AMDREP are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Compatibility Criteria:

Logic Type: Buffer, Non-Inverting (4 elements, 1 bit per element)
Output Type: 3-State
Output Current: 24mA (both high and low)
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
RoHS3 Compliance
MSL Rating: 1 (Unlimited)

Allowable Parameter Variations:

Supply Voltage Range: Substitute parts must support the minimum 1.65V requirement; upper limit may extend beyond 3.6V
Operating Temperature: Substitute parts must support the minimum -40°C to 125°C range; extended lower temperature capability (-55°C) is not required
Packaging Format: Both Tape & Reel (TR) and Tube formats are acceptable for equivalent substitution

All identified substitutes maintain identical functional specifications, pinout compatibility, and mechanical form factor with the primary part.

Parameter Comparison

Parameter	SN74LVC125AMDREP (TI)	74LVC125AD,118 (Nexperia)	74LVC125AD-Q100J (Nexperia)	74LVC125AS14-13 (Diodes)	MC74LCX125DG (onsemi)	MC74LCX125DR2G (onsemi)
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	4	4	4	4	4	4
Number of Bits per Element	1	1	1	1	1	1
Output Type	3-State	3-State	3-State	3-State	3-State	3-State
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V	1.2V ~ 3.6V	1.2V ~ 3.6V	1.65V ~ 5.5V	2V ~ 3.6V	2V ~ 3.6V
Operating Temperature	-55°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active
Packaging Format	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

All identified substitute parts maintain active product status and full RoHS3 compliance, ensuring long-term availability and regulatory compliance equivalent to the primary SN74LVC125AMDREP device.

Nexperia 74LVC125AD,118: This substitute offers extended supply voltage range (1.2V minimum) and maintains the full operating temperature range (-40°C to 125°C). Suitable for applications requiring lower voltage operation while maintaining compatibility with the 1.65V minimum specification of the primary part.

Nexperia 74LVC125AD-Q100J: This variant includes AEC-Q100 automotive qualification, providing additional reliability certification for automotive and mission-critical applications. Electrical and thermal specifications are identical to the standard 74LVC125AD,118.

Diodes Incorporated 74LVC125AS14-13: This substitute extends the maximum supply voltage to 5.5V, providing broader voltage compatibility for mixed-voltage systems. The minimum supply voltage of 1.65V matches the primary part specification.

onsemi MC74LCX125DG and MC74LCX125DR2G: These substitutes operate within a narrower supply voltage range (2V to 3.6V) and reduced operating temperature range (-40°C to 85°C). Selection of these parts requires confirmation that application requirements fall within these constraints. The MC74LCX125DG is supplied in Tube packaging, while MC74LCX125DR2G is supplied in Tape & Reel format.

Frequently Asked Questions (FAQ)

Q: Can the 74LVC125AD,118 directly replace the SN74LVC125AMDREP?

A: Yes. Both devices share identical logic functionality (4-element non-inverting buffer with 3-state output), output current specifications (24mA), package form factor (14-SOIC), and compliance ratings (RoHS3, MSL 1). The 74LVC125AD,118 supports the required 1.65V minimum supply voltage and extends the upper limit to 3.6V, maintaining full compatibility.

Q: What is the difference between the Nexperia 74LVC125AD,118 and 74LVC125AD-Q100J?

A: Both parts are electrically and mechanically identical. The 74LVC125AD-Q100J includes AEC-Q100 automotive qualification, which certifies the device for automotive applications requiring enhanced reliability testing and traceability. Selection depends on application requirements for automotive-grade components.

Q: Are the onsemi MC74LCX125 variants fully compatible with the SN74LVC125AMDREP?

A: The MC74LCX125DG and MC74LCX125DR2G maintain identical logic functionality, output current, and package specifications. However, these devices operate within a narrower temperature range (-40°C to 85°C versus -55°C to 125°C) and narrower supply voltage range (2V to 3.6V versus 1.65V to 3.6V). Substitution is valid only if application requirements fall within these narrower specifications.

Q: What packaging format differences exist among the substitute parts?

A: The SN74LVC125AMDREP, Nexperia variants, and Diodes variant are supplied in Tape & Reel (TR) format. The onsemi MC74LCX125DG is supplied in Tube format, while the MC74LCX125DR2G is supplied in Tape & Reel format. Packaging format selection depends on assembly process requirements and volume considerations.

Q: Can I use the 74LVC125AS14-13 in applications requiring operation below 1.65V?

A: No. The 74LVC125AS14-13 specifies a minimum supply voltage of 1.65V, identical to the primary SN74LVC125AMDREP. The extended maximum voltage rating (5.5V) does not affect the minimum voltage requirement. Applications requiring operation below 1.65V require the Nexperia 74LVC125AD,118 or 74LVC125AD-Q100J, which support 1.2V minimum supply voltage.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory specifications of the primary SN74LVC125AMDREP.

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