CD74HC32MT Equivalent & Substitute Parts

Part Overview

The CD74HC32MT is a 4-channel 2-input OR gate logic integrated circuit manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement continuity. The CD74HC32MT operates across a 2V to 6V supply voltage range and is suitable for general-purpose digital logic applications requiring OR gate functionality. Equivalent parts maintain identical or superior electrical characteristics while preserving pin compatibility and functional equivalence.

Key Parameters

Parameter	Value	Unit
Logic Type	OR Gate	—
Number of Circuits	4	—
Number of Inputs	2	—
Voltage - Supply	2V ~ 6V	V
Current - Quiescent (Max)	2	µA
Current - Output High, Low	5.2, 5.2	mA
Input Logic Level - Low	0.5V ~ 1.8V	V
Input Logic Level - High	1.5V ~ 4.2V	V
Max Propagation Delay @ 6V, 50pF	15	ns
Operating Temperature	-55°C ~ 125°C	°C
Mounting Type	Surface Mount	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the CD74HC32MT is determined by strict equivalence across the following critical parameters:

Functional Equivalence: All substitute parts must implement 4-channel 2-input OR gate logic with identical pin configuration and signal behavior.

Electrical Compatibility: Supply voltage range (2V ~ 6V), input logic levels (Low: 0.5V ~ 1.8V; High: 1.5V ~ 4.2V), and output current specifications (5.2mA high and low) must be maintained or exceeded.

Packaging Compatibility: All substitutes must use 14-SOIC surface mount packaging with 0.154" (3.90mm) width to ensure PCB footprint compatibility.

Operating Temperature Range: Substitutes must support the full -55°C to 125°C operating range or a subset thereof that covers the application requirement.

Compliance Standards: RoHS3 compliance and MSL 1 rating are maintained across all active substitutes.

Substitutes are grouped by manufacturer and product status (active vs. obsolete) to facilitate procurement decisions based on long-term availability.

Parameter Comparison

Part Number	Manufacturer	Status	Quiescent Current (µA)	Propagation Delay (ns)	Temp Range (°C)	Package	Inventory (Pcs)
CD74HC32MT	Texas Instruments	Obsolete	2	15 @ 6V, 50pF	-55 ~ 125	14-SOIC	1067
CD74HC32M96	Texas Instruments	Active	2	15 @ 6V, 50pF	-55 ~ 125	14-SOIC	24756
MC74HC32ADR2G	onsemi	Active	1	13 @ 6V, 50pF	-55 ~ 125	14-SOIC	43289
74HC32D,653	Nexperia USA Inc.	Active	2	15 @ 6V, 50pF	-40 ~ 125	14-SOIC	3700
74HC32D-Q100,118	Nexperia USA Inc.	Active	2	15 @ 6V, 50pF	-40 ~ 125	14-SOIC	1065
74HC32S14-13	Diodes Incorporated	Active	20	15 @ 6V, 50pF	-40 ~ 125	14-SOIC	65100
MC74HC32ADG	onsemi	Active	1	13 @ 6V, 50pF	-55 ~ 125	14-SOIC	1235
MM74HC32M	Fairchild Semiconductor	Active	2	17 @ 6V, 50pF	-40 ~ 85	14-SOIC	1114
MM74HC32MX	Fairchild Semiconductor	Active	2	17 @ 6V, 50pF	-40 ~ 85	14-SOIC	18412
NLV74HC32ADG	onsemi	Obsolete	1	19 @ 6V, 50pF	-55 ~ 125	14-SOIC	1519
NLV74HC32ADR2G	onsemi	Obsolete	1	13 @ 6V, 50pF	-55 ~ 125	14-SOIC	2040

Engineering Selection Recommendations

Primary Recommendation - Active Equivalent with Extended Temperature Range:

CD74HC32M96 (Texas Instruments) is the direct active equivalent to CD74HC32MT. It maintains identical electrical specifications (2 µA quiescent current, 15 ns propagation delay) and the full -55°C to 125°C operating temperature range. This part is manufactured by the same supplier as the obsolete part and provides the highest compatibility assurance. Inventory availability is substantial (24,756 pcs).

Alternative - Superior Performance (Lower Power, Faster Propagation):

MC74HC32ADR2G (onsemi) and MC74HC32ADG (onsemi) both deliver reduced quiescent current (1 µA vs. 2 µA) and faster propagation delay (13 ns vs. 15 ns). Both maintain the full -55°C to 125°C temperature range and 14-SOIC packaging. These parts are suitable for applications where lower power consumption and faster switching are beneficial. MC74HC32ADR2G is available in cut tape format (43,289 pcs inventory), while MC74HC32ADG is supplied in tube packaging (1,235 pcs inventory).

Alternative - Automotive Grade with AEC-Q100 Qualification:

74HC32D-Q100,118 (Nexperia USA Inc.) is qualified to AEC-Q100 automotive standards and is recommended for automotive or high-reliability applications. Operating temperature range is -40°C to 125°C. Electrical specifications match the original part (2 µA quiescent, 15 ns propagation delay). Inventory is limited (1,065 pcs).

Alternative - High Volume Availability:

74HC32S14-13 (Diodes Incorporated) offers the highest inventory availability (65,100 pcs) among active substitutes. Quiescent current is elevated at 20 µA maximum, which may impact low-power applications. Operating temperature range is -40°C to 125°C. Propagation delay matches the original specification at 15 ns.

Not Recommended for New Designs:

MM74HC32M and MM74HC32MX (Fairchild Semiconductor) have restricted operating temperature range (-40°C to 85°C), which does not cover the full specification of the original part. These are suitable only for applications with narrower temperature requirements.

NLV74HC32ADG and NLV74HC32ADR2G (onsemi) are classified as obsolete and should not be selected for new procurement despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can CD74HC32M96 be used as a direct replacement for CD74HC32MT?

A: Yes. CD74HC32M96 is the active equivalent manufactured by Texas Instruments. It maintains identical electrical specifications, operating temperature range (-55°C to 125°C), and 14-SOIC packaging. The parts are functionally and electrically interchangeable.

Q: What is the difference between MC74HC32ADR2G and MC74HC32ADG?

A: Both parts are manufactured by onsemi and have identical electrical specifications. The primary difference is packaging format: MC74HC32ADR2G is supplied in cut tape and digi-reel format, while MC74HC32ADG is supplied in tube packaging. MC74HC32ADR2G is preferred for automated assembly processes.

Q: Why does 74HC32S14-13 have higher quiescent current (20 µA) compared to the original part (2 µA)?

A: 74HC32S14-13 is manufactured by Diodes Incorporated and has different internal design characteristics. The elevated quiescent current may impact battery-powered or ultra-low-power applications. This part is suitable for general-purpose applications where quiescent current is not a critical constraint.

Q: Is 74HC32D-Q100,118 suitable for automotive applications?

A: Yes. 74HC32D-Q100,118 carries AEC-Q100 automotive qualification from Nexperia USA Inc. It is recommended for automotive-grade designs. Operating temperature range is -40°C to 125°C, which covers standard automotive requirements but does not extend to the full -55°C lower limit of the original part.

Q: Can MM74HC32M or MM74HC32MX be used in applications requiring -55°C operation?

A: No. Both Fairchild Semiconductor parts have a minimum operating temperature of -40°C. They are not suitable for applications requiring the full -55°C to 125°C range of the original CD74HC32MT.

Q: What is the significance of RoHS3 compliance and MSL 1 rating?

A: RoHS3 compliance indicates the part meets European Union restrictions on hazardous substances. MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture control, making these parts suitable for standard storage and handling without special precautions.

Q: Are all substitute parts available in 14-SOIC packaging?

A: Yes. All substitute parts listed are available in 14-SOIC (0.154", 3.90mm width) surface mount packaging, ensuring PCB footprint compatibility with designs originally specified for CD74HC32MT.

Q: Which substitute offers the best balance of performance and availability?

A: CD74HC32M96 (Texas Instruments) provides the optimal balance. It is the direct active equivalent with identical specifications, full temperature range support, and substantial inventory availability (24,756 pcs). For applications prioritizing lower power consumption, MC74HC32ADR2G offers superior performance with excellent availability (43,289 pcs).

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message