SN74HC32PWT Equivalent & Substitute Parts

Part Overview

The SN74HC32PWT is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in 14-TSSOP surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design requirements and production needs. The 74HC32 logic family provides standard OR gate functionality across multiple manufacturers, with variants available in different packaging formats and performance grades.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	2V to 6V
Operating Temperature Range	-40°C to 85°C
Package Type	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SN74HC32PWT is determined by strict equivalence across the following parameters: logic type (OR gate), circuit count (4 channels), input count (2 inputs per channel), package type (14-TSSOP), and mounting method (surface mount). All substitute parts maintain these core specifications. Voltage supply range, operating temperature range, quiescent current, output current, propagation delay, and compliance certifications may vary within acceptable engineering tolerances for the 74HC32 logic family. Substitute parts are grouped by manufacturer and product status to facilitate selection based on availability and supply chain requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Logic Type	Circuits / Inputs	Voltage Supply	Operating Temp	Max Propagation Delay @ 6V, 50pF	Quiescent Current (Max)	Product Status	Packaging
SN74HC32PWT	Texas Instruments	OR Gate	4 / 2	2V – 6V	-40°C to 85°C	17ns	2 µA	Discontinued	Cut Tape (CT)
SN74HC32PWR	Texas Instruments	OR Gate	4 / 2	2V – 6V	-40°C to 85°C	17ns	2 µA	Active	Cut Tape (CT)
MC74HC32ADTR2G	onsemi	OR Gate	4 / 2	2V – 6V	-55°C to 125°C	13ns	1 µA	Active	Cut Tape (CT)
MM74HC32MTC	Fairchild Semiconductor	OR Gate	4 / 2	2V – 6V	-40°C to 85°C	17ns	2 µA	Active	Bulk
74HC32PW,118	Nexperia USA Inc.	OR Gate	4 / 2	2V – 6V	-40°C to 125°C	15ns	2 µA	Active	Tape & Reel (TR)
74HC32PW-Q100,118	Nexperia USA Inc.	OR Gate	4 / 2	2V – 6V	-40°C to 125°C	15ns	2 µA	Active	Tape & Reel (TR)
74HC32T14-13	Diodes Incorporated	OR Gate	4 / 2	2V – 6V	-40°C to 125°C	15ns	20 µA	Active	Tape & Reel (TR)
MM74HC32MTCX	onsemi	OR Gate	4 / 2	2V – 6V	-40°C to 85°C	17ns	2 µA	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Replacement (Identical Specifications): SN74HC32PWR from Texas Instruments is the direct active equivalent to the discontinued SN74HC32PWT, maintaining identical electrical characteristics and operating temperature range. This part is recommended for designs requiring no specification changes.

Enhanced Performance Variant: MC74HC32ADTR2G from onsemi provides improved propagation delay (13ns versus 17ns) and lower quiescent current (1 µA versus 2 µA), with an extended operating temperature range (-55°C to 125°C). This variant is suitable for applications requiring enhanced performance margins or wider temperature operation.

Automotive Grade Option: 74HC32PW-Q100,118 from Nexperia USA Inc. includes AEC-Q100 automotive qualification and extended temperature range (-40°C to 125°C), making it appropriate for automotive and industrial applications requiring formal qualification documentation.

Standard Alternatives: 74HC32PW,118 (Nexperia), 74HC32T14-13 (Diodes Incorporated), MM74HC32MTC (Fairchild Semiconductor), and MM74HC32MTCX (onsemi) all maintain core functional equivalence with the original part. Selection among these alternatives should be based on packaging format preference (Tape & Reel versus Bulk), inventory availability, and supply chain considerations. All substitute parts are ROHS3 compliant and carry MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can SN74HC32PWR be used as a direct replacement for SN74HC32PWT? A: Yes. SN74HC32PWR is functionally and electrically identical to SN74HC32PWT, with the same operating temperature range, propagation delay, and quiescent current specifications. The primary difference is product status: SN74HC32PWR is active while SN74HC32PWT is discontinued.

Q: What is the difference between the Nexperia 74HC32PW,118 and 74HC32PW-Q100,118 variants? A: Both parts are manufactured by Nexperia USA Inc. with identical electrical specifications. The 74HC32PW-Q100,118 variant includes AEC-Q100 automotive qualification and is designated for automotive applications. The standard 74HC32PW,118 is suitable for general industrial and commercial applications.

Q: Does MC74HC32ADTR2G from onsemi offer any advantages over the original SN74HC32PWT? A: MC74HC32ADTR2G provides three measurable advantages: faster propagation delay (13ns versus 17ns), lower quiescent current (1 µA versus 2 µA), and extended operating temperature range (-55°C to 125°C versus -40°C to 85°C). These improvements make it suitable for performance-critical or wide-temperature applications.

Q: Are all substitute parts available in the same 14-TSSOP package? A: Yes. All substitute parts listed use the 14-TSSOP (0.173", 4.40mm Width) surface mount package, ensuring mechanical and electrical compatibility with existing PCB designs.

Q: What packaging formats are available for 74HC32 substitutes? A: Substitute parts are available in three packaging formats: Cut Tape (CT) & Digi-Reel, Bulk, and Tape & Reel (TR). Selection depends on production volume and supply chain requirements. All formats contain the same die and electrical specifications.

Q: Are all substitute parts RoHS compliant? A: All listed substitute parts are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited) rating, meeting current environmental and handling requirements for commercial and industrial applications.

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