74HC03D,652 NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74HC03D,652 is a NAND Gate IC manufactured by Nexperia USA Inc., featuring 4 channels with 2 inputs per channel in a 14-SO surface mount package. This logic component implements open drain output architecture and operates across a 2V to 6V supply voltage range. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Features	Open Drain
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	-, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	16ns
Operating Temperature	-40°C ~ 125°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 74HC03D,652 is determined by strict equivalence across the following electrical and mechanical parameters:

Logic Type: NAND Gate with 4 channels, 2 inputs per channel
Output Architecture: Open Drain configuration
Supply Voltage Range: 2V ~ 6V
Input/Output Logic Levels: Matching threshold specifications
Quiescent Current: Maximum 2 µA
Output Current: 5.2mA low
Package: 14-SOIC surface mount form factor
RoHS Compliance: ROHS3 Compliant status

Substitute parts are classified into two categories:

Direct Substitutes (Pin-Compatible, Electrical Equivalent): Parts meeting all electrical specifications and package requirements with active or recently active product status.

Similar Substitutes (Functional Equivalent, Package Variant or Status Consideration): Parts with matching electrical specifications but differing product status, packaging format, or minor parameter variations that remain within acceptable operating ranges.

Parameter Comparison

Part Number	Manufacturer	Product Status	Quiescent Current (Max)	Propagation Delay @ 6V, 50pF	Operating Temperature	Package	RoHS Status
74HC03D,652	Nexperia USA Inc.	Obsolete	2 µA	16ns	-40°C ~ 125°C	14-SO	ROHS3 Compliant
MC74HC03ADR2G	onsemi	Active	1 µA	20ns	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
CD74HC03M	Harris Corporation	Obsolete	2 µA	17ns	-55°C ~ 125°C	14-SOIC	RoHS non-compliant
CD74HC03M96	Texas Instruments	Active	2 µA	17ns	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
CD74HC03MT	Texas Instruments	Last Time Buy	2 µA	17ns	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
MC74HC03ADG	onsemi	Active	1 µA	20ns	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
SN74HC03D	Texas Instruments	Discontinued at DiGi Electronics	2 µA	23ns	-40°C ~ 85°C	14-SOIC	ROHS3 Compliant
SN74HC03DR	Texas Instruments	Active	2 µA	23ns	-40°C ~ 85°C	14-SOIC	ROHS3 Compliant
SN74HC03DT	Texas Instruments	Discontinued at DiGi Electronics	2 µA	23ns	-40°C ~ 85°C	14-SOIC	ROHS3 Compliant
SN74HC03NSR	Texas Instruments	Active	2 µA	23ns	-40°C ~ 85°C	14-SO	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation for Active Designs:

MC74HC03ADR2G (onsemi) or CD74HC03M96 (Texas Instruments) are the preferred substitutes. Both parts carry active product status and ROHS3 compliance. MC74HC03ADR2G offers lower quiescent current (1 µA) and extended operating temperature range (-55°C ~ 125°C). CD74HC03M96 maintains identical quiescent current specifications to the original part (2 µA) with equivalent propagation delay performance (17ns).

For Extended Temperature Range Applications:

MC74HC03ADG (onsemi) provides active product status with -55°C lower temperature bound, supporting applications requiring enhanced cold-temperature performance. This part is available in tube packaging.

For Existing Inventory or Legacy System Maintenance:

SN74HC03DR (Texas Instruments) remains active and maintains full electrical equivalence to the original 74HC03D,652 specification, including identical quiescent current and output current ratings. This part is available in cut tape and digi-reel packaging formats.

Parts to Avoid for New Designs:

CD74HC03M (Harris Corporation) is obsolete and RoHS non-compliant. SN74HC03D and SN74HC03DT are discontinued at DiGi Electronics. CD74HC03MT carries Last Time Buy status, indicating limited future availability.

Frequently Asked Questions (FAQ)

Q: Can MC74HC03ADR2G directly replace 74HC03D,652 in existing PCB designs?

A: Yes. Both parts implement identical NAND gate logic with 4 channels and 2 inputs per channel. The 14-SOIC package footprint is mechanically compatible with the original 14-SO package. Electrical specifications for supply voltage (2V ~ 6V), input logic levels, and output current (5.2mA) are equivalent. The lower quiescent current (1 µA vs. 2 µA) represents an improvement.

Q: What is the difference between 14-SO and 14-SOIC packaging?

A: Both designations refer to 14-pin surface mount small outline packages. The primary difference is body width: 14-SO measures 5.30mm width, while 14-SOIC measures 3.90mm width. PCB footprints differ accordingly. Verify your PCB design accommodates the substitute part's specific package dimensions before implementation.

Q: Why do some substitutes show higher propagation delay (23ns vs. 16ns)?

A: Propagation delay variation reflects manufacturing process differences between suppliers. SN74HC03 variants from Texas Instruments specify 23ns maximum delay at 6V with 50pF load, while Nexperia and onsemi parts specify 16-20ns under identical conditions. All values remain within acceptable logic circuit timing margins for standard 74HC series applications. Verify timing requirements against your specific circuit design.

Q: Is RoHS compliance mandatory for my application?

A: ROHS3 compliance is required for products sold into European Union markets and many regulated industries. All recommended active substitutes carry ROHS3 certification. CD74HC03M (Harris Corporation) is RoHS non-compliant and unsuitable for RoHS-regulated applications.

Q: Which substitute offers the best long-term availability?

A: MC74HC03ADR2G (onsemi) and CD74HC03M96 (Texas Instruments) both carry active product status with no discontinuation notices. onsemi parts typically maintain longer production lifecycles. Verify current inventory and lead times with your component distributor for procurement planning.

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