74LVC74AD-Q100J Equivalent & Substitute Parts

Part Overview

The 74LVC74AD-Q100J is a dual D-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc. in a 14-SOIC surface mount package. This device features complementary outputs, positive edge triggering, and set/reset functionality, operating across a supply voltage range of 1.2V to 3.6V with a maximum clock frequency of 150 MHz. The part is actively produced and carries AEC-Q100 automotive qualification with ROHS3 compliance. Equivalent and substitute parts are identified based on matching functional specifications, electrical parameters, and package compatibility to support design flexibility and supply chain alternatives.

Key Parameters

Parameter	Value
Part Number	74LVC74AD-Q100J
Manufacturer	Nexperia USA Inc.
Type	D-Type Flip-Flop, 2 Element, 1 Bit
Package	14-SOIC (0.154", 3.90mm Width)
Clock Frequency	150 MHz
Propagation Delay	5.2ns @ 3.3V, 50pF
Supply Voltage	1.2V ~ 3.6V
Output Current	24mA (High), 24mA (Low)
Quiescent Current	10 µA
Operating Temperature	-40°C ~ 125°C
Grade	Automotive (AEC-Q100)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 74LVC74AD-Q100J are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalent: Parts that match all critical electrical specifications and package dimensions, differing only in packaging format (bulk vs. tape & reel) or manufacturer designation.

Similar Parts: Parts that maintain functional equivalence (D-type flip-flop, 2 element, 1 bit, complementary output, positive edge trigger) and compatible package form factor but with allowable variations in one or more of the following parameters: clock frequency, propagation delay, supply voltage range, input capacitance, or operating temperature range.

Key parameters determining substitution eligibility:

Function: Set/Reset capability
Type: D-Type flip-flop architecture
Output Type: Complementary outputs
Number of Elements: 2
Number of Bits per Element: 1
Trigger Type: Positive edge
Package: 14-SOIC form factor
Mounting: Surface mount

Parameter Comparison

Part Number	Manufacturer	Clock Frequency	Propagation Delay @ 3.3V, 50pF	Supply Voltage	Operating Temperature	Input Capacitance	Package	Product Status
74LVC74AD-Q100J	Nexperia USA Inc.	150 MHz	5.2ns	1.2V ~ 3.6V	-40°C ~ 125°C	4 pF	14-SOIC (0.154", 3.90mm)	Active
74LVC74AD,118	NXP Semiconductors	150 MHz	5.2ns	1.2V ~ 3.6V	-40°C ~ 125°C	4 pF	14-SOIC (0.154", 3.90mm)	Active
74LCX74M	Fairchild Semiconductor	150 MHz	7ns	2V ~ 3.6V	-40°C ~ 85°C	7 pF	14-SOIC (0.154", 3.90mm)	Active
MC74LCX74DG	onsemi	150 MHz	7ns	2V ~ 3.6V	-40°C ~ 85°C	7 pF	14-SOIC (0.154", 3.90mm)	Active
MC74LCX74DR2G	onsemi	150 MHz	7ns	2V ~ 3.6V	-40°C ~ 85°C	7 pF	14-SOIC (0.154", 3.90mm)	Active
SN74LVC74ADE4	Texas Instruments	150 MHz	5.2ns	1.65V ~ 3.6V	-40°C ~ 125°C	5 pF	14-SOIC (0.154", 3.90mm)	Discontinued at DiGi Electronics
SN74LVC74ADT	Texas Instruments	150 MHz	5.2ns	1.65V ~ 3.6V	-40°C ~ 125°C	5 pF	14-SOIC (0.154", 3.90mm)	Active
SN74LVC74AMDREP	Texas Instruments	100 MHz	5.2ns	2V ~ 3.6V	-55°C ~ 125°C	5 pF	14-SOIC (0.154", 3.90mm)	Active
SN74LVC74ANSR	Texas Instruments	150 MHz	5.2ns	1.65V ~ 3.6V	-40°C ~ 125°C	5 pF	14-SOIC (0.209", 5.30mm)	Active

Engineering Selection Recommendations

Direct Parametric Equivalent: 74LVC74AD,118 (NXP Semiconductors) is the primary parametric equivalent, matching all electrical specifications and package dimensions. Both parts are actively produced and ROHS3 compliant. Selection between these two depends on packaging format availability (tape & reel vs. bulk) and supply chain requirements.

Texas Instruments 74LVC Series Alternatives: SN74LVC74ADT and SN74LVC74ADE4 maintain the 74LVC series designation with identical clock frequency and propagation delay. SN74LVC74ADT is actively produced and recommended for new designs. SN74LVC74ADE4 is discontinued at DiGi Electronics and should not be selected for new applications. Both support the extended operating temperature range of -40°C to 125°C. The minimum supply voltage is 1.65V compared to 1.2V for the primary part.

Extended Temperature Range Option: SN74LVC74AMDREP (Texas Instruments) extends the lower operating temperature to -55°C, suitable for military or extreme environment applications. Clock frequency is reduced to 100 MHz. Minimum supply voltage is 2V.

Package Variant: SN74LVC74ANSR uses a wider 14-SOIC package (0.209", 5.30mm width) compared to the standard 0.154" width. This part is electrically equivalent to other 74LVC variants but requires PCB layout adjustment for the larger package footprint.

74LCX Series Alternatives: MC74LCX74DG, MC74LCX74DR2G, and 74LCX74M (Fairchild) represent the 74LCX logic family. These parts accept a narrower supply voltage range (2V minimum vs. 1.2V) and operate at a reduced maximum temperature of 85°C. Propagation delay is 7ns compared to 5.2ns for 74LVC variants. These parts are suitable for applications where the reduced voltage range and temperature range are acceptable and where the slightly longer propagation delay does not impact system performance.

Frequently Asked Questions (FAQ)

Q: Can I use 74LVC74AD,118 as a direct replacement for 74LVC74AD-Q100J? A: Yes. Both parts are parametric equivalents with identical electrical specifications and 14-SOIC package dimensions. The difference is packaging format (bulk vs. tape & reel) and manufacturer designation. Verify tape & reel availability if your assembly process requires it.

Q: What is the difference between 74LVC and 74LCX series parts? A: The 74LVC series supports a lower minimum supply voltage (1.2V vs. 2V) and operates to a higher maximum temperature (125°C vs. 85°C). The 74LCX series has a slightly longer propagation delay (7ns vs. 5.2ns). Both are functionally equivalent D-type flip-flops. Select 74LVC for low-voltage or extended temperature applications; select 74LCX where supply voltage is guaranteed above 2V and operating temperature does not exceed 85°C.

Q: Is SN74LVC74ANSR compatible with my PCB designed for 74LVC74AD-Q100J? A: The SN74LVC74ANSR uses a wider 14-SOIC package (0.209" vs. 0.154" width). Electrical function is identical, but the larger package footprint requires PCB layout modification. Do not use this part as a direct drop-in replacement without verifying PCB pad spacing and clearance.

Q: Can I use MC74LCX74DR2G in an automotive application? A: The MC74LCX74DR2G is not listed with automotive qualification. The 74LVC74AD-Q100J carries AEC-Q100 automotive grade certification. For automotive applications, select parts explicitly qualified to AEC-Q100 or equivalent automotive standards.

Q: Why is SN74LVC74ADE4 listed as discontinued? A: SN74LVC74ADE4 is discontinued at DiGi Electronics. For new designs, use SN74LVC74ADT (active production) or 74LVC74AD,118 as alternatives. Existing inventory of discontinued parts may be available through secondary distributors, but long-term supply is not assured.

Q: What does "propagation delay" mean for flip-flop selection? A: Propagation delay is the time required for an output to respond to a clock edge at the input. The 74LVC74AD-Q100J has a maximum propagation delay of 5.2ns at 3.3V with 50pF load. The 74LCX series has 7ns delay. For high-speed applications where timing margins are critical, the shorter 5.2ns delay of 74LVC parts is preferred.

Q: Can I substitute SN74LVC74AMDREP if my application requires -55°C operation? A: Yes, SN74LVC74AMDREP extends the lower operating temperature to -55°C. However, the clock frequency is reduced to 100 MHz (vs. 150 MHz for the primary part) and the minimum supply voltage is 2V (vs. 1.2V). Verify that your application can tolerate these parameter changes before selection.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message