NC7SZ32M5 OR Gate IC Equivalent & Substitute Parts

Part Overview

The NC7SZ32M5 is a single-channel, 2-input OR gate logic IC manufactured by onsemi in SOT-23-5 surface mount packaging. This part operates across a wide supply voltage range of 1.65V to 5.5V with low quiescent current of 2 µA and output drive capability of 32mA. The NC7SZ32M5 is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	1
Number of Inputs	2
Voltage Supply Range	1.65V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	32mA / 32mA
Max Propagation Delay @ 5V, 50pF	4.5ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	SC-74A, SOT-753
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the NC7SZ32M5 is determined by the following critical parameters:

Functional Equivalence: All substitute parts must be single-channel, 2-input OR gate logic ICs with identical logic function.

Electrical Compatibility: Supply voltage range must encompass or match the 1.65V ~ 5.5V specification. Output drive current (32mA minimum) and propagation delay (4.5ns maximum at 5V, 50pF) define performance boundaries.

Package Compatibility: Primary substitutes use SOT-23-5 packaging (SC-74A, SOT-753) for direct board-level replacement. Secondary substitutes in SC-70-5 packaging (5-TSSOP, SOT-353) are functionally equivalent but require PCB layout modification.

Compliance & Status: Active product status is preferred for long-term availability. RoHS3 compliance and REACH unaffected status ensure regulatory alignment.

Substitutes are grouped into two categories: direct replacements (identical package, electrical performance) and functional equivalents (different package, compatible electrical specifications).

Parameter Comparison

Part Number	Manufacturer	Product Status	Package	Voltage Supply	Quiescent Current (Max)	Output Current	Propagation Delay @ 5V	Operating Temp	RoHS Status
NC7SZ32M5	onsemi	Obsolete	SOT-23-5	1.65V ~ 5.5V	2 µA	32mA / 32mA	4.5ns	-40°C ~ 85°C	Not specified
NC7SZ32M5X	onsemi	Active	SOT-23-5	1.65V ~ 5.5V	2 µA	32mA / 32mA	4.5ns	-40°C ~ 85°C	ROHS3 Compliant
SN74LVC1G32DBVR	Texas Instruments	Active	SOT-23-5	1.65V ~ 5.5V	10 µA	32mA / 32mA	4ns	-40°C ~ 125°C	ROHS3 Compliant
SN74LVC1G32DBVT	Texas Instruments	Active	SOT-23-5	1.65V ~ 5.5V	10 µA	32mA / 32mA	4ns	-40°C ~ 125°C	ROHS3 Compliant
74LVC1G32GV,125	Nexperia USA Inc.	Active	SC-74A	1.65V ~ 5.5V	4 µA	32mA / 32mA	4ns	-40°C ~ 125°C	ROHS3 Compliant
SN74LVC1G32DCKR	Texas Instruments	Active	SC-70-5	1.65V ~ 5.5V	10 µA	32mA / 32mA	4ns	-40°C ~ 125°C	ROHS3 Compliant
SN74LVC1G32DCKT	Texas Instruments	Active	SC-70-5	1.65V ~ 5.5V	10 µA	32mA / 32mA	4ns	-40°C ~ 125°C	ROHS3 Compliant
SN74LVC1G32MDBVREP	Texas Instruments	Active	SOT-23-5	1.65V ~ 5.5V	10 µA	32mA / 32mA	4.5ns	-55°C ~ 125°C	ROHS3 Compliant
SN74AHC1G32DBVR	Texas Instruments	Active	SOT-23-5	2V ~ 5.5V	1 µA	8mA / 8mA	7.5ns	-40°C ~ 85°C	ROHS3 Compliant
SN74AHC1G32DBVT	Texas Instruments	Obsolete	SOT-23-5	2V ~ 5.5V	1 µA	8mA / 8mA	7.5ns	-40°C ~ 85°C	ROHS3 Compliant
MC74VHC1G32DTT1G	onsemi	Obsolete	5-TSOP	2V ~ 5.5V	1 µA	8mA / 8mA	7.5ns	-55°C ~ 125°C	ROHS3 Compliant

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended):

NC7SZ32M5X is the primary substitute. It is manufactured by onsemi, maintains identical electrical specifications and SOT-23-5 packaging, and carries active product status with ROHS3 compliance. This part provides seamless board-level compatibility with no design modifications required.

Tier 2 - Electrical Equivalent, Same Package:

SN74LVC1G32DBVR and SN74LVC1G32DBVT (Texas Instruments) and SN74LVC1G32MDBVREP (Texas Instruments) are functionally equivalent in SOT-23-5 packaging. These parts maintain the 1.65V ~ 5.5V supply range, 32mA output drive, and 4ns propagation delay. All carry active product status and ROHS3 compliance. The extended operating temperature range of SN74LVC1G32MDBVREP (-55°C ~ 125°C) provides additional thermal margin for demanding applications.

Tier 3 - Functional Equivalent, Different Package:

SN74LVC1G32DCKR and SN74LVC1G32DCKT (Texas Instruments) use SC-70-5 packaging instead of SOT-23-5. These parts maintain electrical compatibility but require PCB layout modification. Both are active products with ROHS3 compliance.

74LVC1G32GV,125 (Nexperia USA Inc.) uses SC-74A packaging with active product status and ROHS3 compliance.

Tier 4 - Reduced Output Drive (Not Recommended for Direct Replacement):

SN74AHC1G32DBVR and MC74VHC1G32DTT1G feature reduced output drive current (8mA vs. 32mA) and extended propagation delay (7.5ns vs. 4.5ns). These parts are suitable only for applications with lower current requirements and relaxed timing constraints. SN74AHC1G32DBVT is obsolete and should be avoided.

Frequently Asked Questions (FAQ)

Q: Can NC7SZ32M5X directly replace NC7SZ32M5 without PCB modifications?

A: Yes. NC7SZ32M5X is a direct replacement with identical SOT-23-5 packaging, supply voltage range (1.65V ~ 5.5V), output drive (32mA), and propagation delay (4.5ns @ 5V, 50pF). No PCB layout changes are required.

Q: What is the key difference between SN74LVC1G32 and SN74AHC1G32 series?

A: The SN74LVC1G32 series provides 32mA output drive current and operates from 1.65V supply voltage. The SN74AHC1G32 series provides only 8mA output drive and requires minimum 2V supply. Choose SN74LVC1G32 for applications requiring higher current drive or lower supply voltage operation.

Q: Are SC-70-5 packaged parts (SN74LVC1G32DCKR, SN74LVC1G32DCKT) compatible with SOT-23-5 footprints?

A: No. SC-70-5 and SOT-23-5 are different package types with different pin configurations and PCB footprints. Board redesign is required to use SC-70-5 packaged parts.

Q: Which substitute offers the widest operating temperature range?

A: SN74LVC1G32MDBVREP operates from -55°C to 125°C, providing the widest temperature coverage. The original NC7SZ32M5 operates from -40°C to 85°C.

Q: Are all recommended substitutes RoHS3 compliant?

A: NC7SZ32M5X and all Texas Instruments and Nexperia substitutes listed carry ROHS3 compliance certification. The original NC7SZ32M5 does not specify RoHS status.

Q: What is the inventory status of recommended substitutes?

A: NC7SZ32M5X has 32,400 pcs in stock. SN74LVC1G32DBVR has 35,100 pcs. SN74LVC1G32DBVT has 33,100 pcs. SN74LVC1G32DCKR has 275,300 pcs. All recommended Tier 1 and Tier 2 substitutes maintain substantial inventory levels.

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