74LVC32ADB,112 OR Gate IC Equivalent & Substitute Parts

Part Overview

The 74LVC32ADB,112 is a 4-channel 2-input OR gate logic IC manufactured by Nexperia USA Inc., packaged in 14-SSOP surface mount configuration. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74LVC32 series operates across a wide voltage range (1.2V to 3.6V) and is suitable for low-power digital logic applications requiring OR gate functionality.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	1.2V ~ 3.6V
Current - Quiescent (Max)	40 µA
Current - Output High/Low	24mA / 24mA
Input Logic Level - Low	0.7V ~ 0.8V
Input Logic Level - High	1.7V ~ 2V
Max Propagation Delay @ 3.3V, 50pF	3.8ns
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	14-SSOP (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74LVC32ADB,112 is determined by the following critical parameters:

Functional Equivalence: All substitute parts must maintain 4-channel 2-input OR gate configuration with identical logic type and circuit count.

Electrical Compatibility: Supply voltage range, input/output logic levels, output current capability, and propagation delay must remain within acceptable tolerances for the target application. The original part operates at 1.2V minimum; substitutes with higher minimum voltage (2V or 1.65V) are acceptable for 3.3V and 5V systems.

Package Compatibility: Substitutes are grouped by package type—14-SSOP (original package) and 14-TSSOP (thermally enhanced variant). Both packages are surface mount with identical pin counts and compatible footprints for most applications.

Packaging Format: Substitutes are available in multiple formats (Tape & Reel, Bulk, Cut Tape, Tube) affecting procurement and assembly processes but not electrical function.

Product Status & Compliance: Active substitutes are preferred over obsolete parts. All listed substitutes maintain ROHS3 compliance and MSL 1 rating, ensuring environmental and moisture compatibility.

Parameter Comparison

Part Number	Manufacturer	Package Type	Voltage Supply	Quiescent Current (Max)	Propagation Delay @ 3.3V	Operating Temp	Product Status
74LVC32ADB,112	Nexperia USA Inc.	14-SSOP	1.2V ~ 3.6V	40 µA	3.8ns	-40°C ~ 125°C	Obsolete
74LVC32APW,118	Nexperia USA Inc.	14-TSSOP	1.2V ~ 3.6V	40 µA	5ns	-40°C ~ 125°C	Active
74LCX32MTCX	onsemi	14-TSSOP	2V ~ 3.6V	10 µA	5.5ns	-40°C ~ 85°C	Active
SN74LVC32ADB	Texas Instruments	14-SSOP	Not specified	Not specified	Not specified	Not specified	Active
SN74LVC32ADBR	Texas Instruments	14-SSOP	1.65V ~ 3.6V	1 µA	3.6ns	-40°C ~ 125°C	Active
SN74LVC32AMPWREP	Texas Instruments	14-TSSOP	2V ~ 3.6V	10 µA	3.8ns	-55°C ~ 125°C	Active
SN74LVC32APW	Texas Instruments	14-TSSOP	1.65V ~ 3.6V	1 µA	3.6ns	-40°C ~ 125°C	Active
SN74LVC32APWT	Texas Instruments	14-TSSOP	1.65V ~ 3.6V	1 µA	3.6ns	-40°C ~ 125°C	Active
SN74LVC32AQPWREP	Texas Instruments	14-TSSOP	2V ~ 3.6V	10 µA	3.8ns	-40°C ~ 125°C	Active
SN74LVC32AQPWRG4Q1	Texas Instruments	14-TSSOP	2V ~ 3.6V	10 µA	3.8ns	-40°C ~ 125°C	Active (Automotive)
SN74LVC32AQPWRQ1	Texas Instruments	14-TSSOP	2V ~ 3.6V	10 µA	3.8ns	-40°C ~ 125°C	Active (Automotive)

Engineering Selection Recommendations

Direct Package Replacement (14-SSOP): SN74LVC32ADBR and SN74LVC32ADB from Texas Instruments provide direct footprint compatibility with the original 74LVC32ADB,112. Both are active products with full electrical specifications. SN74LVC32ADBR offers superior quiescent current performance (1 µA vs. 40 µA) and faster propagation delay (3.6ns vs. 3.8ns), making it the preferred 14-SSOP substitute.

Thermally Enhanced Alternative (14-TSSOP): The 14-TSSOP package variants (SN74LVC32APW, SN74LVC32APWT, 74LVC32APW,118) provide improved thermal characteristics while maintaining electrical compatibility. These are suitable for designs where PCB layout permits package migration. SN74LVC32APW and SN74LVC32APWT from Texas Instruments offer the lowest quiescent current (1 µA) and fastest propagation delay (3.6ns).

Automotive-Grade Options: SN74LVC32AQPWRG4Q1 and SN74LVC32AQPWRQ1 are AEC-Q100 qualified automotive-grade variants. These are appropriate for automotive and high-reliability applications requiring formal qualification documentation.

Alternative Manufacturer: 74LVC32APW,118 from Nexperia USA Inc. maintains the same voltage range as the original part (1.2V ~ 3.6V) and is available in active status with high inventory levels.

Cross-Manufacturer Option: 74LCX32MTCX from onsemi is functionally equivalent but operates at a higher minimum voltage (2V) and narrower temperature range (-40°C to 85°C). This part is suitable for 3.3V systems but not for applications requiring 1.2V operation.

Frequently Asked Questions (FAQ)

Q: Can I use a 14-TSSOP package substitute in place of the original 14-SSOP package?

A: Yes, with PCB layout modification. Both packages are surface mount with identical pin counts and electrical compatibility. The 14-TSSOP package is narrower (4.40mm vs. 5.30mm width) and offers improved thermal performance. Footprint adjustment is required during PCB redesign.

Q: What is the difference between SN74LVC32APW and SN74LVC32APWT?

A: Both parts are electrically identical 14-TSSOP packages from Texas Instruments with identical specifications. The difference is packaging format: SN74LVC32APW is supplied in Tube format, while SN74LVC32APWT is supplied in Tape & Reel format. Selection depends on assembly process requirements.

Q: Is the 74LCX32MTCX from onsemi a direct substitute?

A: The 74LCX32MTCX is functionally equivalent but has a higher minimum supply voltage (2V vs. 1.2V) and narrower operating temperature range (-40°C to 85°C vs. -40°C to 125°C). It is suitable for 3.3V systems but not for applications requiring lower voltage operation or extended temperature range.

Q: Why do some substitutes have lower quiescent current?

A: Texas Instruments variants (SN74LVC32APW, SN74LVC32APWT, SN74LVC32ADBR) specify 1 µA quiescent current compared to 40 µA for the original Nexperia part. This reflects improved process technology and lower standby power consumption. Both specifications are within acceptable logic IC parameters.

Q: Are automotive-grade variants (SN74LVC32AQPWRG4Q1, SN74LVC32AQPWRQ1) compatible with standard applications?

A: Yes. Automotive-grade parts meet all standard logic IC requirements and are fully compatible with non-automotive applications. They include AEC-Q100 qualification, which provides additional reliability assurance. Use in standard applications incurs no functional penalty.

Q: What is the significance of the "REP" suffix in part numbers like SN74LVC32AMPWREP?

A: The "REP" suffix indicates a replacement or repackaged variant. These parts maintain full electrical and functional equivalence to their base part numbers. Selection between REP and non-REP variants depends on procurement availability and supply chain requirements.

Q: Can I substitute based on propagation delay alone?

A: No. While propagation delay is important for timing-critical applications, substitution must account for all parameters: supply voltage range, input/output logic levels, quiescent current, operating temperature, and package compatibility. All listed substitutes maintain functional equivalence across these parameters.

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