74LVC14ADB,112 Equivalent & Substitute Parts

Part Overview

The 74LVC14ADB,112 is a 6-channel inverter IC with Schmitt trigger inputs manufactured by Nexperia USA Inc. in a 14-SSOP package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The device operates across a 1.2V to 3.6V supply voltage range with Schmitt trigger functionality for noise immunity in digital logic applications.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Features	Schmitt Trigger
Voltage - Supply	1.2V ~ 3.6V
Current - Quiescent (Max)	40 µA
Current - Output High, Low	24mA, 24mA
Max Propagation Delay @ 3.3V, 50pF	6.4ns
Operating Temperature	-40°C ~ 125°C
Package / Case	14-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 74LVC14ADB,112 is determined by the following critical parameters:

Logic Function: All substitutes must be 6-channel inverters with Schmitt trigger inputs
Package Compatibility: Substitutes are grouped by package type (14-SSOP or 14-TSSOP)
Voltage Supply Range: Minimum supply voltage must accommodate the application requirements
Output Drive Capability: Output current ratings (24mA for both high and low states)
Propagation Delay: Maximum delay at 3.3V with 50pF load must meet timing requirements
Operating Temperature Range: Must support the required temperature environment
Compliance: RoHS3 compliance and REACH unaffected status

Substitutes are organized into two groups: direct package replacements (14-SSOP) and alternative package options (14-TSSOP) that require PCB layout modification.

Parameter Comparison

Part Number	Manufacturer	Package	Supply Voltage	Quiescent Current (Max)	Output Current (H/L)	Propagation Delay @ 3.3V, 50pF	Operating Temp	Product Status
74LVC14ADB,112	Nexperia USA Inc.	14-SSOP	1.2V ~ 3.6V	40 µA	24mA, 24mA	6.4ns	-40°C ~ 125°C	Obsolete
SN74LVC14ADBR	Texas Instruments	14-SSOP	1.65V ~ 3.6V	1 µA	24mA, 24mA	6.2ns	-40°C ~ 125°C	Active
SN74LVC14ADGVR	Texas Instruments	14-TVSOP	1.65V ~ 3.6V	1 µA	24mA, 24mA	6.2ns	-40°C ~ 125°C	Active
SN74LVC14APW	Texas Instruments	14-TSSOP	1.65V ~ 3.6V	1 µA	24mA, 24mA	6.2ns	-40°C ~ 125°C	Active
SN74LVC14APWRE4	Texas Instruments	14-TSSOP	1.65V ~ 3.6V	1 µA	24mA, 24mA	6.2ns	-40°C ~ 125°C	Discontinued at DiGi Electronics
SN74LVC14APWT	Texas Instruments	14-TSSOP	1.65V ~ 3.6V	1 µA	24mA, 24mA	6.2ns	-40°C ~ 125°C	Active
SN74LVC14AQPWREP	Texas Instruments	14-TSSOP	2V ~ 3.6V	10 µA	24mA, 24mA	6.4ns	-40°C ~ 125°C	Active
SN74LVC14AQPWRG4Q1	Texas Instruments	14-TSSOP	2V ~ 3.6V	10 µA	24mA, 24mA	6.4ns	-40°C ~ 125°C	Active
SN74LVC14AQPWRQ1	Texas Instruments	14-TSSOP	2V ~ 3.6V	10 µA	24mA, 24mA	6.4ns	-40°C ~ 125°C	Active
74LCX14MTCX	onsemi	14-TSSOP	2V ~ 3.6V	10 µA	24mA, 24mA	6.5ns	-40°C ~ 85°C	Active

Engineering Selection Recommendations

Direct Package Replacement (14-SSOP)

SN74LVC14ADBR from Texas Instruments is the primary direct replacement for the obsolete 74LVC14ADB,112. Both use the 14-SSOP package, eliminating PCB layout changes. The SN74LVC14ADBR is active in production, RoHS3 compliant, and REACH unaffected. The minimum supply voltage increases from 1.2V to 1.65V, and quiescent current decreases to 1 µA, representing improved power efficiency.

Alternative Package Options (14-TSSOP)

For applications where package footprint changes are acceptable, multiple Texas Instruments 14-TSSOP variants provide active production status:

SN74LVC14APW and SN74LVC14APWT offer standard commercial specifications with 1.65V minimum supply voltage and 1 µA quiescent current
SN74LVC14AQPWREP, SN74LVC14AQPWRG4Q1, and SN74LVC14AQPWRQ1 feature 2V minimum supply voltage with 10 µA quiescent current; the latter two include AEC-Q100 automotive qualification
74LCX14MTCX from onsemi provides an alternative 14-TSSOP option with 2V minimum supply voltage and 10 µA quiescent current; operating temperature range is limited to -40°C to 85°C

All substitutes maintain 24mA output drive capability and propagation delays within 6.2ns to 6.5ns at 3.3V with 50pF load.

Frequently Asked Questions (FAQ)

Q: Can I use SN74LVC14ADBR as a direct replacement without PCB modifications?

A: Yes. SN74LVC14ADBR uses the same 14-SSOP package as the 74LVC14ADB,112, requiring no PCB layout changes. Both are surface-mount devices with identical pin counts and spacing.

Q: What is the difference between 14-SSOP and 14-TSSOP packages?

A: 14-SSOP has a 5.30mm body width, while 14-TSSOP has a 4.40mm body width. These are not pin-compatible and require different PCB footprints. The TSSOP variant is more compact.

Q: Does the lower minimum supply voltage of SN74LVC14ADBR (1.65V vs 1.2V) affect compatibility?

A: The higher minimum voltage of SN74LVC14ADBR (1.65V) is compatible with applications operating at 1.65V and above. Applications requiring operation below 1.65V must use alternatives with lower minimum voltage specifications or the original Nexperia part if still available.

Q: Are the automotive-qualified variants (SN74LVC14AQPWRG4Q1, SN74LVC14AQPWRQ1) suitable for non-automotive applications?

A: Yes. Automotive-qualified parts meet AEC-Q100 standards and are suitable for any application. They provide additional reliability assurance but are not required for non-automotive use.

Q: What is the impact of quiescent current differences between substitutes?

A: The 74LVC14ADB,112 draws 40 µA maximum quiescent current, while most Texas Instruments substitutes draw 1 µA. This represents a 40x reduction in standby power consumption, beneficial for battery-powered or low-power applications. The onsemi 74LCX14MTCX and Texas Instruments AQPWR variants draw 10 µA, a 4x improvement.

Q: Can I use 74LCX14MTCX if my application requires operation above 85°C?

A: No. The 74LCX14MTCX operating temperature range is -40°C to 85°C. Applications requiring operation up to 125°C must use Texas Instruments variants or the original Nexperia part.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitutes are RoHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements equivalent to the original 74LVC14ADB,112.

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