74LVC1G74GD,125 Equivalent & Substitute Parts

Part Overview

The 74LVC1G74GD,125 is a single D-type flip-flop logic IC manufactured by Nexperia USA Inc., designed for general-purpose digital logic applications requiring edge-triggered storage and complementary outputs. This device operates across a wide supply voltage range (1.65V to 5.5V) and features a 200 MHz clock frequency with 4.1ns maximum propagation delay at 5V with 50pF load.

The 74LVC1G74GD,125 is classified as obsolete. Equivalent substitute parts are available in active product status from both Nexperia USA Inc. and NXP Semiconductors, offering identical or superior electrical performance with improved availability and long-term supply assurance.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LVC1G74GD,125
Manufacturer	Nexperia USA Inc.
Series	74LVC
Function	Set(Preset) and Reset
Type	D-Type Flip-Flop
Number of Elements	1
Number of Bits per Element	1
Output Type	Complementary
Clock Frequency	200 MHz
Max Propagation Delay @ 5V, 50pF	4.1ns
Trigger Type	Positive Edge
Current - Output High/Low	32mA / 32mA
Voltage - Supply	1.65V ~ 5.5V
Current - Quiescent (Iq)	4 µA
Input Capacitance	4 pF
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 of the 74LVC1G74GD,125 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Clock Frequency: 200 MHz (all substitutes match)
Max Propagation Delay @ 5V, 50pF: 4.1ns (all substitutes match)
Trigger Type: Positive Edge (all substitutes match)
Current - Output High/Low: 32mA / 32mA (all substitutes match)
Voltage - Supply: 1.65V ~ 5.5V (all substitutes match)
Input Capacitance: 4 pF (all substitutes match)
Operating Temperature: -40°C ~ 125°C (all substitutes match)

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount (all substitutes match)
Package / Case: 8-XFDFN (all substitutes match)
Function: Set(Preset) and Reset (all substitutes match)
Output Type: Complementary (all substitutes match)

Substitution Categories:

Direct Package Equivalents (8-XSON, 8-XFDFN): 74LVC1G74GS,115, 74LVC1G74GN,115, 74LVC1G74GT,115, 74LVC1G74GT-Q100X
Alternative Package (8-VSSOP, 8-VFSOP): 74LVC1G74DC,125
Dual-Element Variants (74LVC2G74 series): 74LVC2G74GN,115, 74LVC2G74GS,115, 74LVC2G74GT,115

All listed substitutes maintain identical electrical performance and functional characteristics. Differences exist only in packaging format, supplier device package dimensions, quiescent current specifications (40 µA vs. 4 µA), and product status (active vs. obsolete).

Parameter Comparison

Parameter	74LVC1G74GD,125	74LVC1G74DC,125	74LVC1G74GS,115	74LVC1G74GN,115	74LVC1G74GT,115	74LVC1G74GT-Q100X	74LVC2G74GN,115	74LVC2G74GS,115	74LVC2G74GT,115
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	NXP Semiconductors	NXP Semiconductors	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	NXP USA Inc.
Clock Frequency	200 MHz	200 MHz	200 MHz	200 MHz	200 MHz	200 MHz	200 MHz	200 MHz	200 MHz
Max Propagation Delay @ 5V, 50pF	4.1ns	4.1ns	4.1ns	4.1ns	4.1ns	4.1ns	4.1ns	4.1ns	4.1ns
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	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V
Current - Output High/Low	32mA / 32mA	32mA / 32mA	32mA / 32mA	32mA / 32mA	32mA / 32mA	32mA / 32mA	32mA / 32mA	32mA / 32mA	32mA / 32mA
Current - Quiescent (Iq)	4 µA	4 µA	4 µA	40 µA	40 µA	4 µA	40 µA	40 µA	40 µA
Input Capacitance	4 pF	4 pF	4 pF	4 pF	4 pF	4 pF	4 pF	4 pF	4 pF
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	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-XFDFN	8-VFSOP (0.091", 2.30mm)	8-XFDFN	8-XFDFN	8-XFDFN	8-XFDFN	8-XFDFN	8-XFDFN	8-XFDFN
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (Same Package, Same Pinout):

Select 74LVC1G74GS,115 or 74LVC1G74GT-Q100X for applications requiring the 8-XFDFN package with identical footprint compatibility. Both parts are in active product status with ROHS3 compliance. The 74LVC1G74GT-Q100X includes AEC-Q100 automotive qualification for applications requiring automotive-grade components.

For Alternative Package Compatibility:

The 74LVC1G74DC,125 provides electrical equivalence in an 8-VFSOP package (0.091", 2.30mm width) for designs where the larger VSSOP footprint is acceptable. This part is active and ROHS3 compliant.

For Dual-Element Requirements:

The 74LVC2G74 series (74LVC2G74GN,115, 74LVC2G74GS,115, 74LVC2G74GT,115) provides two independent D-type flip-flops in a single package. These are electrically equivalent but contain dual elements rather than single elements. All are active and ROHS3 compliant.

Quiescent Current Consideration:

Parts specified with 40 µA quiescent current (74LVC1G74GN,115, 74LVC1G74GT,115, 74LVC2G74 series) differ from the original 4 µA specification. This represents a 10x increase in standby power consumption and should be evaluated for battery-powered or low-power applications.

Supply Chain and Availability:

All substitute parts are in active product status with significantly higher inventory levels compared to the obsolete 74LVC1G74GD,125. Selection should prioritize active parts to ensure long-term availability and supply continuity.

Frequently Asked Questions (FAQ)

Q: Can I use 74LVC1G74GS,115 as a direct replacement for 74LVC1G74GD,125?

A: Yes. Both parts share identical electrical specifications (200 MHz clock frequency, 4.1ns propagation delay, 1.65V–5.5V supply range, 32mA output current, 4 µA quiescent current) and the same 8-XFDFN package. The primary difference is product status: 74LVC1G74GS,115 is active with higher availability.

Q: What is the difference between 74LVC1G74 and 74LVC2G74?

A: The 74LVC1G74 contains a single D-type flip-flop element, while the 74LVC2G74 contains two independent D-type flip-flop elements in the same package. Both share identical electrical performance per element. The 74LVC2G74 is suitable only if your application requires dual flip-flops.

Q: Why do some substitutes specify 40 µA quiescent current instead of 4 µA?

A: The 74LVC1G74GN,115, 74LVC1G74GT,115, and 74LVC2G74 series are specified with 40 µA quiescent current, representing a different manufacturing process or test condition. This increases standby power consumption by 10x. For low-power applications, select parts with 4 µA specification (74LVC1G74GS,115, 74LVC1G74GT-Q100X, 74LVC1G74DC,125).

Q: Is 74LVC1G74GT-Q100X suitable for automotive applications?

A: Yes. The 74LVC1G74GT-Q100X carries AEC-Q100 automotive qualification and is ROHS3 compliant. It is the appropriate choice for automotive-grade designs requiring the 8-XFDFN package.

Q: Can I use 74LVC1G74DC,125 if my PCB layout is designed for 8-XFDFN?

A: No. The 74LVC1G74DC,125 uses an 8-VFSOP package (0.091", 2.30mm width), which has a different footprint than 8-XFDFN. PCB layout modification is required. Use this part only if your design accommodates the VSSOP footprint.

Q: Are all substitute parts ROHS3 compliant?

A: Most are. The 74LVC1G74GN,115 and 74LVC1G74GT,115 do not specify RoHS status in the provided data. Confirm RoHS compliance with the manufacturer if this is a requirement for your application.

Q: What is the difference between Nexperia USA Inc. and NXP Semiconductors versions?

A: Both manufacturers produce equivalent parts within the 74LVC1G74 and 74LVC2G74 series. Nexperia USA Inc. and NXP Semiconductors are related entities. Parts are functionally and electrically identical; selection can be based on availability and packaging preference.

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