74HC32DR2G Equivalent & Substitute Parts

Part Overview

The 74HC32DR2G is a 4-channel 2-input OR gate logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74HC32 series represents a standard logic function across multiple manufacturers, with several active alternatives available that maintain functional and electrical compatibility.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	2V to 6V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	5.2mA / 5.2mA
Input Logic Level - Low	0.5V to 1.8V
Input Logic Level - High	1.5V to 4.2V
Max Propagation Delay @ 6V, 50pF	13ns
Operating Temperature Range	-55°C to 125°C
Mounting Type	Surface Mount
Package	14-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 74HC32DR2G is determined by strict adherence to the following electrical and mechanical parameters:

Logic function: 4-channel 2-input OR gate
Supply voltage range: 2V to 6V minimum
Package type: 14-SOIC surface mount
Input/output logic levels: 0.5V–1.8V (low), 1.5V–4.2V (high)
Output current capability: 5.2mA minimum for both high and low states
Propagation delay: 13ns to 17ns @ 6V, 50pF load
Operating temperature: -55°C to 125°C or -40°C to 85°C

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications) and similar alternatives (functionally equivalent with minor specification variations). All listed substitutes maintain the same logic function, pin count, and package footprint.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Supply	Quiescent Current (Max)	Propagation Delay @ 6V, 50pF	Operating Temperature	Package
74HC32DR2G	onsemi	Obsolete	2V–6V	2 µA	13ns	-55°C to 125°C	14-SOIC
MC74HC32ADR2G	onsemi	Active	2V–6V	1 µA	13ns	-55°C to 125°C	14-SOIC
NLV74HC32ADR2G	onsemi	Obsolete	2V–6V	1 µA	13ns	-55°C to 125°C	14-SOIC
CD74HC32M96	Texas Instruments	Active	2V–6V	2 µA	15ns	-55°C to 125°C	14-SOIC
CD74HC32MT	Texas Instruments	Obsolete	2V–6V	2 µA	15ns	-55°C to 125°C	14-SOIC
MM74HC32MX	Fairchild Semiconductor	Active	2V–6V	2 µA	17ns	-40°C to 85°C	14-SOIC
MM74HC32M	Fairchild Semiconductor	Active	2V–6V	2 µA	17ns	-40°C to 85°C	14-SOIC
74HC32D,653	Nexperia USA Inc.	Active	2V–6V	2 µA	15ns	-40°C to 125°C	14-SOIC
74HC32D-Q100,118	Nexperia USA Inc.	Active	2V–6V	2 µA	15ns	-40°C to 125°C	14-SOIC
SN74HC32D	Texas Instruments	Discontinued	2V–6V	2 µA	17ns	-40°C to 85°C	14-SOIC
CD74HC32M	Harris Corporation	Obsolete	2V–6V	2 µA	15ns	-55°C to 125°C	14-SOIC

Engineering Selection Recommendations

For replacement of the obsolete 74HC32DR2G, the following selection criteria apply:

Primary Recommendation: MC74HC32ADR2G (onsemi) This part is the direct parametric equivalent with active product status. It maintains identical electrical specifications (13ns propagation delay, -55°C to 125°C operating range) and is RoHS3 compliant with unlimited moisture sensitivity level. This represents the lowest-risk substitution path.

Secondary Recommendations: CD74HC32M96 (Texas Instruments) Active status with 15ns propagation delay and -55°C to 125°C operating range. RoHS3 compliant. Suitable for applications where the extended temperature range and slightly higher propagation delay are acceptable.

Automotive-Grade Alternative: 74HC32D-Q100,118 (Nexperia USA Inc.) For applications requiring AEC-Q100 qualification, this part provides automotive-grade certification with active product status and -40°C to 125°C operating range.

Temperature-Constrained Applications: MM74HC32MX or MM74HC32M (Fairchild Semiconductor) Both parts are active with -40°C to 85°C operating range. Suitable only for applications where the reduced temperature range is acceptable. 17ns propagation delay represents the maximum among available substitutes.

Parts with obsolete or discontinued status (NLV74HC32ADR2G, CD74HC32MT, SN74HC32D, CD74HC32M) should be avoided for new designs unless existing inventory is available and acceptable for the application timeline.

Frequently Asked Questions (FAQ)

Q: Can I use MM74HC32MX as a direct replacement for 74HC32DR2G? A: Functionally yes, but with limitations. Both are 4-channel 2-input OR gates in 14-SOIC packaging with identical logic levels and output current. However, MM74HC32MX has a reduced operating temperature range (-40°C to 85°C versus -55°C to 125°C) and slightly higher propagation delay (17ns versus 13ns). Use only if your application operates within -40°C to 85°C.

Q: What is the difference between MC74HC32ADR2G and 74HC32DR2G? A: Both are onsemi products with identical electrical performance (13ns propagation delay, -55°C to 125°C). The key difference is product status: 74HC32DR2G is obsolete while MC74HC32ADR2G is active. MC74HC32ADR2G also has lower quiescent current (1 µA versus 2 µA) and is RoHS3 compliant.

Q: Are all 14-SOIC packaged 74HC32 variants pin-compatible? A: Yes. All listed substitutes use 14-SOIC surface mount packaging with identical pin assignments. Physical footprint compatibility is guaranteed across all alternatives.

Q: Which substitute has the fastest propagation delay? A: The 74HC32DR2G and MC74HC32ADR2G both specify 13ns propagation delay at 6V with 50pF load. This represents the fastest performance among available substitutes.

Q: Can I use a part with -40°C to 85°C operating range in a -55°C to 125°C application? A: No. Operating temperature range is a hard specification limit. Parts rated for -40°C to 85°C (MM74HC32MX, MM74HC32M, SN74HC32D) cannot be used in applications requiring -55°C to 125°C operation.

Q: What does RoHS3 compliance mean for this part? A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements. MC74HC32ADR2G, CD74HC32M96, CD74HC32MT, 74HC32D,653, and 74HC32D-Q100,118 are RoHS3 compliant. CD74HC32M is RoHS non-compliant.

Q: Is NLV74HC32ADR2G suitable for new designs? A: No. Although it offers identical electrical specifications to 74HC32DR2G and includes AEC-Q100 automotive qualification, it is classified as obsolete. For automotive applications, use 74HC32D-Q100,118 (active status) instead.

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