74AHCT32S14-13 Equivalent & Substitute Parts

Part Overview

The 74AHCT32S14-13 is a 4-channel 2-input OR Gate logic IC manufactured by Diodes Incorporated in 14-SOIC surface mount packaging. This part is classified as Active status with 775 units in stock. The 74AHCT32 series serves as a fundamental logic building block in digital circuit design, offering standard propagation delay and output drive characteristics suitable for general-purpose logic applications.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for compatible logic families with enhanced performance characteristics or extended temperature ratings.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	4.5V ~ 5.5V
Current - Quiescent (Max)	20 µA
Current - Output High/Low	8mA / 8mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ 5V, 50pF	7.9ns
Operating Temperature	-40°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74AHCT32S14-13 is determined by the following critical parameters:

Logic Function: Must be 4-channel 2-input OR Gate
Package Type: Must be 14-SOIC (0.154", 3.90mm Width) surface mount
Voltage Supply Range: Must support 4.5V ~ 5.5V operation
Output Drive Capability: Must provide 8mA output current (high and low)
Input Logic Levels: Must accept 0.8V (low) and 2V (high) thresholds
Propagation Delay: Must not exceed 7.9ns @ 5V, 50pF load
Compliance: Must maintain ROHS3 compliance and MSL 1 rating

Substitute parts are grouped into two categories: parametric equivalents from the same manufacturer (Diodes Incorporated) and direct equivalents from alternative manufacturers (Texas Instruments, onsemi) that meet or exceed the specified electrical and mechanical parameters.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Voltage Supply	Quiescent Current (Max)	Output Current	Propagation Delay @ 5V, 50pF	Operating Temperature	Packaging	Product Status	Inventory
74AHCT32S14-13	Diodes Incorporated	74AHCT	4.5V ~ 5.5V	20 µA	8mA / 8mA	7.9ns	-40°C ~ 125°C	Tape & Reel (TR)	Active	775 Pcs
MC74VHCT32ADR2G	onsemi	74VHCT	2V ~ 5.5V	2 µA	8mA / 8mA	7.5ns	-55°C ~ 125°C	Tape & Reel (TR)	Active	2060 Pcs
SN74AHCT32DR	Texas Instruments	74AHCT	4.5V ~ 5.5V	2 µA	8mA / 8mA	7.9ns	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	Active	98921 Pcs
SN74AHCT32D	Texas Instruments	74AHCT	4.5V ~ 5.5V	2 µA	8mA / 8mA	7.9ns	-40°C ~ 85°C	Tube	Last Time Buy	2642 Pcs
SN74AHCT32MDREP	Texas Instruments	74AHCT	4.5V ~ 5.5V	2 µA	8mA / 8mA	7.9ns	-55°C ~ 125°C	Tape & Reel (TR)	Active	1009 Pcs
SN74AHCT32QDRG4Q1	Texas Instruments	74AHCT	4.5V ~ 5.5V	2 µA	8mA / 8mA	7.9ns	-40°C ~ 125°C	Tape & Reel (TR)	Active	3496 Pcs
SN74AHCT32QDRQ1	Texas Instruments	74AHCT	4.5V ~ 5.5V	2 µA	8mA / 8mA	7.9ns	-40°C ~ 125°C	Tape & Reel (TR)	Active	9449 Pcs

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs)

SN74AHCT32QDRG4Q1 and SN74AHCT32QDRQ1 from Texas Instruments are the preferred substitutes. Both parts carry Active product status, AEC-Q100 automotive qualification, and extended temperature range (-40°C ~ 125°C). These variants provide the widest operating temperature envelope and are suitable for applications requiring automotive-grade reliability.

SN74AHCT32MDREP offers extended temperature range (-55°C ~ 125°C) with Active status and Tape & Reel packaging, making it suitable for industrial and military-grade applications.

Secondary Substitutes (Packaging Alternatives)

SN74AHCT32DR from Texas Instruments provides the highest inventory availability (98921 units) with Active status. Operating temperature is limited to -40°C ~ 85°C. This part is suitable for commercial applications where extended temperature range is not required.

SN74AHCT32D is designated Last Time Buy status and should be avoided for new designs despite adequate electrical specifications.

Alternative Logic Family

MC74VHCT32ADR2G from onsemi represents a different logic family (74VHCT) with enhanced specifications: lower quiescent current (2 µA vs. 20 µA), wider supply voltage range (2V ~ 5.5V), faster propagation delay (7.5ns), and extended temperature range (-55°C ~ 125°C). This part is suitable as a drop-in replacement where lower power consumption is beneficial.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 74AHCT32S14-13 with any 74AHCT32 variant?

A: Not all variants are equivalent. Substitutes must maintain the same 14-SOIC package, 4.5V ~ 5.5V supply voltage range, 8mA output drive, and 7.9ns maximum propagation delay. Packaging format (Tape & Reel vs. Tube vs. Cut Tape) affects manufacturing compatibility. Verify product status before selecting Last Time Buy parts.

Q: What is the difference between 74AHCT and 74VHCT logic families?

A: The 74VHCT family (MC74VHCT32ADR2G) operates at lower supply voltages (2V minimum vs. 4.5V minimum) and draws significantly less quiescent current (2 µA vs. 20 µA). Both families are pin-compatible in 14-SOIC packaging and meet the same logic function requirements. The 74VHCT variant is suitable for battery-powered or low-power applications.

Q: Are automotive-qualified parts (AEC-Q100) required for my application?

A: Automotive qualification is necessary only for automotive or safety-critical applications. SN74AHCT32QDRG4Q1 and SN74AHCT32QDRQ1 carry AEC-Q100 qualification. For general commercial applications, standard Active-status parts are sufficient.

Q: What packaging formats are available, and does it matter?

A: Available formats include Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and Tube. Tape & Reel is standard for automated assembly. Cut Tape & Digi-Reel is suitable for mixed-volume production. Tube packaging is used for manual assembly or low-volume applications. Select based on your manufacturing process requirements.

Q: Can I use SN74AHCT32D as a substitute?

A: SN74AHCT32D carries Last Time Buy status, indicating the manufacturer has discontinued or will discontinue production. While electrically compatible, this part should not be selected for new designs. Use Active-status alternatives instead.

Q: What is the temperature range difference, and does it affect substitution?

A: The 74AHCT32S14-13 operates -40°C ~ 125°C. SN74AHCT32DR is limited to -40°C ~ 85°C, which is insufficient for extended-temperature applications. SN74AHCT32MDREP, SN74AHCT32QDRG4Q1, SN74AHCT32QDRQ1, and MC74VHCT32ADR2G all support -40°C ~ 125°C or wider ranges. Select based on your application's thermal requirements.

Q: Is RoHS3 compliance maintained across all substitutes?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.

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