74LVC74ADB,112 Equivalent & Substitute Parts

Part Overview

The 74LVC74ADB,112 is a dual D-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc. in 14-SSOP surface mount packaging. This device provides two independent D-type flip-flops with Set (Preset) and Reset functions, complementary outputs, and positive edge triggering. The part is classified as Obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LVC74ADB,112
Manufacturer	Nexperia USA Inc.
Series	74LVC
Package / Case	14-SSOP (0.209", 5.30mm Width)
Product Status	Obsolete
Type	D-Type Flip-Flop
Number of Elements	2
Number of Bits per Element	1
Clock Frequency	150 MHz
Max Propagation Delay @ 3.3V, 50pF	5.2 ns
Trigger Type	Positive Edge
Output Type	Complementary
Current - Output High, Low	24 mA, 24 mA
Voltage - Supply	1.2V ~ 3.6V
Current - Quiescent (Iq)	10 µA
Input Capacitance	4 pF
Operating Temperature	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74LVC74ADB,112 is determined by the following critical parameters:

Logic Function: Dual D-type flip-flop with Set/Reset, complementary outputs, positive edge trigger
Electrical Performance: Clock frequency of 150 MHz, propagation delay of 5.2 ns @ 3.3V/50pF, output drive of 24 mA
Supply Voltage Range: 1.2V to 3.6V operation
Package Type: 14-pin surface mount (SSOP or TSSOP variants acceptable)
Compliance: ROHS3 compliance and MSL rating

Substitute parts are grouped into two categories:

Category 1: Direct Package Match (14-SSOP) Parts maintaining identical 14-SSOP (0.209", 5.30mm) packaging with equivalent electrical specifications.

Category 2: Compatible Package Variant (14-TSSOP) Parts using 14-TSSOP (0.173", 4.40mm) packaging with equivalent or superior electrical specifications. These require PCB layout adjustment but maintain full functional compatibility.

Category 3: Parametric Equivalents Parts with identical electrical characteristics and packaging from alternative manufacturers.

Parameter Comparison

Part Number	Manufacturer	Package	Status	Clock Freq (MHz)	Prop Delay @ 3.3V (ns)	Supply Voltage (V)	Output Current (mA)	Temp Range (°C)	RoHS
74LVC74ADB,112	Nexperia USA Inc.	14-SSOP	Obsolete	150	5.2	1.2 ~ 3.6	24/24	-40 ~ 125	ROHS3
74LVC74ADB,112	NXP Semiconductors	14-SSOP	Active	150	5.2	1.2 ~ 3.6	24/24	-40 ~ 125	Not Specified
74LVC74APW,118	NXP Semiconductors	14-TSSOP	Active	150	5.2	1.2 ~ 3.6	24/24	-40 ~ 125	Not Specified
SN74LVC74ADBR	Texas Instruments	14-SSOP	Active	150	5.2	1.65 ~ 3.6	24/24	-40 ~ 125	ROHS3
SN74LVC74APW	Texas Instruments	14-TSSOP	Active	150	5.2	1.65 ~ 3.6	24/24	-40 ~ 125	ROHS3
SN74LVC74APWT	Texas Instruments	14-TSSOP	Active	150	5.2	1.65 ~ 3.6	24/24	-40 ~ 125	ROHS3
SN74LVC74AMPWREP	Texas Instruments	14-TSSOP	Active	100	5.2	2.0 ~ 3.6	24/24	-55 ~ 125	ROHS3
SN74LVC74AQPWREP	Texas Instruments	14-TSSOP	Active	150	5.2	2.0 ~ 3.6	24/24	-40 ~ 125	ROHS3
SN74LVC74AQPWRQ1	Texas Instruments	14-TSSOP	Active	150	5.2	2.0 ~ 3.6	24/24	-40 ~ 125	ROHS3
74LCX74MTCX	Fairchild Semiconductor	14-TSSOP	Active	150	7.0	2.0 ~ 3.6	24/24	Not Specified

Engineering Selection Recommendations

For Direct Replacement (Same Package - 14-SSOP):

The NXP Semiconductors 74LVC74ADB,112 (Active status) is the primary parametric equivalent, offering identical electrical specifications and packaging. The Texas Instruments SN74LVC74ADBR provides an alternative with Active product status and ROHS3 compliance, with a slightly narrower supply voltage range (1.65V minimum vs. 1.2V).

For Package-Compatible Substitution (14-TSSOP):

The following parts are functionally equivalent with package variant accommodation:

SN74LVC74APW and SN74LVC74APWT (Texas Instruments): Maintain 150 MHz clock frequency, 5.2 ns propagation delay, and full temperature range. ROHS3 compliant. Require PCB layout modification for the narrower 14-TSSOP footprint.
SN74LVC74AQPWREP and SN74LVC74AQPWRQ1 (Texas Instruments): Identical electrical performance with Active status and ROHS3 compliance. SN74LVC74AQPWRQ1 includes AEC-Q100 automotive qualification.
74LVC74APW,118 (NXP Semiconductors): Equivalent performance in 14-TSSOP package with Active status.

For Extended Temperature Range:

The SN74LVC74AMPWREP extends operating temperature to -55°C, suitable for industrial applications, though clock frequency is reduced to 100 MHz.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity. The SN74LVC74AQPWRQ1 is qualified to AEC-Q100 for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 14-SSOP package with a 14-TSSOP package variant?

A: Yes. Both packages contain 14 pins with identical pinout and electrical function. The 14-TSSOP is narrower (4.40mm vs. 5.30mm), requiring PCB footprint adjustment. Electrical performance remains equivalent.

Q: What is the minimum supply voltage for each substitute?

A: The original 74LVC74ADB,112 operates from 1.2V. Most Texas Instruments variants specify 1.65V minimum. The NXP 74LVC74APW,118 and NXP 74LVC74ADB,112 maintain 1.2V minimum. Verify your circuit's minimum supply voltage before selection.

Q: Are all substitutes ROHS3 compliant?

A: Texas Instruments parts (SN74LVC74 series) are explicitly ROHS3 compliant. The NXP 74LVC74APW,118 and Fairchild 74LCX74MTCX do not specify RoHS status in the provided data. Confirm compliance requirements with your procurement specifications.

Q: What is the difference between SN74LVC74APWT and SN74LVC74APW?

A: Both are identical electrically. SN74LVC74APWT is supplied in Tape & Reel packaging for automated assembly, while SN74LVC74APW is supplied in Tube packaging for manual handling. Select based on your assembly process requirements.

Q: Can I use the 74LCX74MTCX as a direct substitute?

A: The 74LCX74MTCX is functionally compatible but has a 7.0 ns propagation delay versus 5.2 ns for the original part. This 1.8 ns difference may affect timing-critical applications. Verify timing margins in your circuit before substitution.

Q: Is the SN74LVC74AQPWRQ1 suitable for automotive applications?

A: Yes. The SN74LVC74AQPWRQ1 carries AEC-Q100 automotive qualification, making it suitable for automotive-grade designs. It maintains full electrical equivalence with the original part.

Q: What inventory levels are available for each substitute?

A: Inventory varies by part and supplier. SN74LVC74APWT has 2,496 units, SN74LVC74APW has 1,900 units, and 74LVC74APW,118 has 56,962 units available. Confirm current availability with your component supplier.

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