74LVC3G34GD,125 Equivalent & Substitute Parts

Part Overview

The 74LVC3G34GD,125 is a non-inverting buffer IC manufactured by Nexperia USA Inc., featuring 3 elements with 1 bit per element and push-pull output capability. This device operates across a supply voltage range of 1.65V to 5.5V and is rated for operating temperatures from -40°C to 125°C. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LVC3G34GD,125
Manufacturer	Nexperia USA Inc.
Logic Type	Buffer, Non-Inverting
Number of Elements	3
Number of Bits per Element	1
Output Type	Push-Pull
Current - Output High, Low	32mA, 32mA
Voltage - Supply	1.65V ~ 5.5V
Operating Temperature	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount
Package / Case	8-XFDFN
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74LVC3G34GD,125 is determined by the following critical parameters:

Logic Type: Buffer, Non-Inverting
Output Type: Push-Pull
Current - Output High, Low: 32mA, 32mA
Voltage - Supply: 1.65V ~ 5.5V
Operating Temperature: -40°C ~ 125°C (TA)
Series: 74LVC

Substitute parts are grouped into two categories:

Direct Package Equivalent: The 74LVC3G34DC,125 maintains identical electrical specifications and the same 3-element configuration within a different package variant (8-VSSOP instead of 8-XFDFN). This part is active and suitable for direct replacement where package footprint compatibility exists.

Parametric Equivalents with Reduced Element Count: Parts with 1 or 2 elements (74LVC1G34 and 74LVC2G34 series) provide identical electrical performance per element but with fewer buffer elements. These require circuit redesign to accommodate the reduced element count and are suitable only when application requirements allow for element consolidation or when multiple devices can be paralleled.

Parameter Comparison

Parameter	74LVC3G34GD,125	74LVC3G34DC,125	74LVC2G34GM,115	74LVC2G34GM,132	74LVC1G34GM,115	74LVC1G34GM,132
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	3	3	2	2	1	1
Number of Bits per Element	1	1	1	1	1	1
Output Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Current - Output High, Low	32mA, 32mA	32mA, 32mA	32mA, 32mA	32mA, 32mA	32mA, 32mA	32mA, 32mA
Voltage - Supply	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-XFDFN	8-VFSOP	6-XFDFN	6-XFDFN	6-XFDFN	6-XFDFN
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	REACH Unaffected	ROHS3 Compliant	Not specified	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

For Direct Replacement (Preferred): The 74LVC3G34DC,125 is the primary substitute. It maintains all electrical specifications and element count identical to the 74LVC3G34GD,125 while offering active product status. The only difference is the package variant (8-VFSOP versus 8-XFDFN). This part is suitable for direct substitution provided PCB layout accommodates the VFSOP footprint. Both parts are ROHS3 compliant and operate within identical electrical and thermal parameters.

For Reduced Element Count Applications: The 74LVC2G34 series (74LVC2G34GM,115 and 74LVC2G34GM,132) provides 2 elements with identical per-element electrical performance. These parts are active and ROHS3 compliant. Selection between these variants depends on packaging requirements (both use 6-XFDFN) and availability. These parts require circuit redesign to accommodate the reduced element count.

For Single Element Applications: The 74LVC1G34 series (74LVC1G34GM,115 and 74LVC1G34GM,132) provides single-element buffer functionality with identical electrical specifications. These parts are active and suitable only for applications requiring a single buffer element. Multiple devices may be used in parallel to achieve higher element counts.

Frequently Asked Questions (FAQ)

Q: Can the 74LVC3G34DC,125 directly replace the 74LVC3G34GD,125?

A: Yes, the 74LVC3G34DC,125 is a direct electrical equivalent with identical specifications. The primary consideration is package compatibility. The 74LVC3G34GD,125 uses an 8-XFDFN package while the 74LVC3G34DC,125 uses an 8-VFSOP package. Verify that your PCB layout can accommodate the VFSOP footprint before substitution.

Q: What is the difference between the 74LVC3G34 and 74LVC2G34 series?

A: The primary difference is the number of buffer elements. The 74LVC3G34 contains 3 independent buffer elements, while the 74LVC2G34 contains 2 elements. All other electrical parameters—supply voltage, output current, operating temperature, and logic type—remain identical. Selection depends on the number of buffer channels required in your application.

Q: Are all substitute parts ROHS3 compliant?

A: The 74LVC3G34DC,125, 74LVC2G34GM,115, and 74LVC1G34GM,115 are confirmed ROHS3 compliant. The 74LVC2G34GM,132 and 74LVC1G34GM,132 do not have RoHS status specified in available documentation. Verify compliance requirements for your application before selection.

Q: Can I use multiple 74LVC1G34 devices to replace a single 74LVC3G34?

A: Yes, multiple 74LVC1G34 devices can be used in parallel to achieve the required number of buffer elements. However, this approach increases PCB area, component count, and assembly complexity. Direct substitution with the 74LVC3G34DC,125 or 74LVC2G34 series is preferred where package compatibility exists.

Q: What is the moisture sensitivity level for these parts?

A: The 74LVC3G34GD,125 has an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. The 74LVC3G34DC,125 and other active substitutes maintain this same MSL rating, allowing standard handling and storage procedures without special moisture control requirements.

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