74AHCT2G00GD,125 Equivalent & Substitute Parts

Part Overview

The 74AHCT2G00GD,125 is a NAND Gate IC featuring 2 channels with 2 inputs per channel, packaged in an 8-XSON (2x3) surface mount configuration. Manufactured by Nexperia USA Inc., this logic component operates within a 4.5V to 5.5V supply voltage range and is designed for high-speed digital switching applications. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	2
Number of Inputs	2
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	1 µA
Current - Output High, Low	8mA, 8mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	7.9ns @ 5V, 50pF
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74AHCT2G00GD,125 is determined by strict equivalence across the following critical parameters:

Logic function: NAND Gate with identical 2-channel, 2-input configuration
Electrical specifications: Matching supply voltage range (4.5V ~ 5.5V), quiescent current, output drive capability, input logic thresholds, and propagation delay
Operating temperature range: -40°C ~ 125°C
Series designation: 74AHCT
Base product number: 74AHCT2G00
Compliance certifications: ROHS3, REACH Unaffected, EAR99
Moisture sensitivity: MSL 1

The 74AHCT2G00DC,125 qualifies as a direct substitute based on identical electrical and functional parameters. The primary difference is packaging format: the substitute uses 8-VSSOP (0.091", 2.30mm Width) instead of 8-XSON (2x3), with corresponding changes to the supplier device package designation.

Parameter Comparison

Parameter	74AHCT2G00GD,125 (Main)	74AHCT2G00DC,125 (Substitute)
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.
Logic Type	NAND Gate	NAND Gate
Number of Circuits	2	2
Number of Inputs	2	2
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Max)	1 µA	1 µA
Current - Output High, Low	8mA, 8mA	8mA, 8mA
Input Logic Level - Low	0.8V	0.8V
Input Logic Level - High	2V	2V
Max Propagation Delay @ V, Max CL	7.9ns @ 5V, 50pF	7.9ns @ 5V, 50pF
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount
Supplier Device Package	8-XSON (2x3)	8-VSSOP
Package / Case	8-XFDFN	8-VFSOP (0.091", 2.30mm Width)
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The 74AHCT2G00DC,125 is the qualified substitute for the obsolete 74AHCT2G00GD,125. Both parts maintain identical electrical performance, logic function, and compliance certifications. The substitute is currently in active production status, ensuring availability for new designs and production continuity.

Selection between these parts is determined by PCB layout requirements and package footprint compatibility. The main part uses an 8-XSON (2x3) package, while the substitute uses an 8-VSSOP package with different dimensional specifications. PCB design must accommodate the selected package geometry, as the two packages are not interchangeable without layout modification.

Both parts satisfy ROHS3 compliance and REACH requirements, with identical moisture sensitivity ratings and export classifications. No additional qualification or testing is required when transitioning from the obsolete part to the active substitute, provided package footprint compatibility is confirmed.

Frequently Asked Questions (FAQ)

Q: Can the 74AHCT2G00DC,125 be used as a direct replacement for the 74AHCT2G00GD,125?

A: Yes, from an electrical and functional standpoint. Both parts are identical in logic function, electrical specifications, operating temperature range, and compliance certifications. The primary consideration is package compatibility. The substitute uses 8-VSSOP packaging instead of 8-XSON (2x3), requiring PCB footprint verification before implementation.

Q: What is the key difference between these two parts?

A: The parts differ only in packaging format and product status. The main part (74AHCT2G00GD,125) uses 8-XSON (2x3) packaging and is obsolete. The substitute (74AHCT2G00DC,125) uses 8-VSSOP packaging and is in active production. All electrical parameters and logic specifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical ROHS3 compliance, REACH Unaffected status, EAR99 export classification, and MSL 1 moisture sensitivity ratings. No additional compliance verification is required when substituting between these parts.

Q: What should I verify before using the substitute part?

A: Confirm that your PCB layout can accommodate the 8-VSSOP package footprint (0.091", 2.30mm Width) instead of the original 8-XSON (2x3) package. Verify pin assignments match your schematic. No electrical or thermal re-qualification is necessary.

Q: Is the substitute part currently available?

A: Yes. The 74AHCT2G00DC,125 is listed as active production status with inventory availability, making it suitable for both new designs and production continuity of existing applications.

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