74HC32D,652 Equivalent & Substitute Parts

Part Overview

The 74HC32D,652 is a 4-channel 2-input OR gate logic IC manufactured by Nexperia USA Inc. in a 14-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The 74HC32 series provides standard logic gating functionality across the 74HC family of CMOS logic devices, with electrical characteristics suitable for 2V to 6V supply voltage applications.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	5.2mA, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	15ns
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 (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74HC32D,652 is determined by the following critical parameters:

Logic function: 4-channel 2-input OR gate
Package type: 14-SOIC surface mount
Supply voltage range: 2V ~ 6V
Input/output logic levels and thresholds
Propagation delay characteristics
Operating temperature range
RoHS and environmental compliance status

Substitute parts must maintain identical logic functionality, package footprint compatibility, and electrical parameter ranges within acceptable tolerances. Parts are grouped by manufacturer and product status (active vs. obsolete) to facilitate procurement decisions.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Supply	Quiescent Current (Max)	Propagation Delay @ 6V, 50pF	Operating Temp	Package	RoHS Status
74HC32D,652	Nexperia USA Inc.	Obsolete	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-SOIC	ROHS3 Compliant
74HC32D,653	Nexperia USA Inc.	Active	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-SOIC	ROHS3 Compliant
CD74HC32M	Harris Corporation	Obsolete	2V ~ 6V	2 µA	15ns	-55°C ~ 125°C	14-SOIC	RoHS non-compliant
CD74HC32M96	Texas Instruments	Active	2V ~ 6V	2 µA	15ns	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
CD74HC32MT	Texas Instruments	Obsolete	2V ~ 6V	2 µA	15ns	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
MC74HC32ADG	onsemi	Active	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
MC74HC32ADR2G	onsemi	Active	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
MM74HC32M	Fairchild Semiconductor	Active	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C	14-SOIC	Not specified
MM74HC32MX	Fairchild Semiconductor	Active	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C	14-SOIC	Not specified
NLV74HC32ADR2G	onsemi	Obsolete	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
SN74HC32D	Texas Instruments	Discontinued at DiGi Electronics	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C	14-SOIC	ROHS3 Compliant

Engineering Selection Recommendations

For direct replacement of the 74HC32D,652, the 74HC32D,653 from Nexperia USA Inc. is the primary equivalent. Both parts share identical electrical specifications and package configuration, with the key distinction being that 74HC32D,653 maintains active product status.

For applications requiring extended temperature range operation (-55°C to 125°C), CD74HC32M96 from Texas Instruments or MC74HC32ADR2G from onsemi are suitable alternatives. Both are active products with ROHS3 compliance. MC74HC32ADR2G and MC74HC32ADG offer improved quiescent current performance (1 µA vs. 2 µA) and faster propagation delay (13ns vs. 15ns).

CD74HC32M from Harris Corporation and CD74HC32MT from Texas Instruments are obsolete alternatives and should be avoided for new designs unless existing inventory constraints require their use. CD74HC32M carries non-compliant RoHS status.

MM74HC32M and MM74HC32MX from Fairchild Semiconductor are active alternatives but feature reduced operating temperature range (-40°C to 85°C) and slower propagation delay (17ns), making them suitable only for applications with relaxed temperature and timing requirements.

SN74HC32D from Texas Instruments is discontinued at DiGi Electronics and carries similar temperature and timing limitations as the Fairchild options.

Frequently Asked Questions (FAQ)

Q: Can 74HC32D,653 be used as a direct replacement for 74HC32D,652?

A: Yes. Both parts are manufactured by Nexperia USA Inc., share identical electrical specifications, and use the same 14-SOIC package. The primary difference is product status: 74HC32D,653 is active while 74HC32D,652 is obsolete.

Q: What is the difference between onsemi MC74HC32ADG and MC74HC32ADR2G?

A: Both parts are electrically identical 4-channel 2-input OR gates from onsemi with identical specifications. The difference lies in packaging: MC74HC32ADG is supplied in tube packaging, while MC74HC32ADR2G is supplied in cut tape and Digi-Reel format. Selection depends on procurement and assembly requirements.

Q: Are there temperature range considerations when substituting parts?

A: Yes. The original 74HC32D,652 operates from -40°C to 125°C. Substitutes from Texas Instruments and onsemi extend the lower limit to -55°C, providing wider temperature coverage. Fairchild and some Texas Instruments alternatives limit operation to -40°C to 85°C, which is narrower than the original specification.

Q: Does propagation delay variation affect circuit performance?

A: Propagation delay differences exist among substitutes: 15ns (Nexperia, Texas Instruments CD74HC32M96), 13ns (onsemi), and 17ns (Fairchild, Texas Instruments SN74HC32D). Selection should account for timing-critical applications where faster or slower propagation delay may impact system performance.

Q: Are all substitute parts RoHS compliant?

A: Most active substitutes are ROHS3 compliant. CD74HC32M from Harris Corporation is RoHS non-compliant. Fairchild parts do not specify RoHS status. For applications requiring RoHS compliance, select from Nexperia, Texas Instruments CD74HC32M96, or onsemi active products.

Q: Can NLV74HC32ADR2G be used as a substitute?

A: NLV74HC32ADR2G is an automotive-grade part (AEC-Q100 qualified) from onsemi with identical logic specifications to the 74HC32D,652. However, it is classified as obsolete. Use only if existing inventory is available and automotive qualification is required.

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