74HCT03D,652 NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74HCT03D,652 is a NAND Gate IC featuring 4 channels with 2 inputs per channel and open drain output configuration in a 14-SO surface mount package. Manufactured by Nexperia USA Inc., this component operates within the 4.5V to 5.5V supply voltage range and is classified as obsolete. Due to its obsolete product status and limited availability relative to active alternatives, identifying equivalent substitute parts is necessary for design continuity and procurement flexibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HCT03D,652
Manufacturer	Nexperia USA Inc.
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Features	Open Drain
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	-, 4mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	24ns @ 4.5V, 50pF
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 74HCT03D,652 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Logic Type: NAND Gate (4 channels, 2 inputs per channel)
Features: Open Drain output configuration
Voltage - Supply: 4.5V ~ 5.5V
Current - Output Low: 4mA
Input Logic Levels: Low 0.8V, High 2V
Max Propagation Delay: 24ns @ 4.5V, 50pF
Mounting Type: Surface Mount
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Base Product Number: 74HCT03

All substitute parts maintain identical functional specifications and package dimensions, ensuring direct replacement capability in existing circuit designs.

Parameter Comparison

Parameter	74HCT03D,652 (Nexperia)	CD74HCT03M (Harris)	CD74HCT03M96 (TI)	CD74HCT03MT (TI)
Logic Type	NAND Gate	NAND Gate	NAND Gate	NAND Gate
Number of Circuits	4	4	4	4
Number of Inputs	2	2	2	2
Features	Open Drain	Open Drain	Open Drain	Open Drain
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA	2 µA	2 µA	2 µA
Current - Output High, Low	-, 4mA	-, 4mA	-, 4mA	-, 4mA
Input Logic Level - Low	0.8V	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V	2V
Max Propagation Delay @ V, Max CL	24ns @ 4.5V, 50pF	24ns @ 4.5V, 50pF	24ns @ 4.5V, 50pF	24ns @ 4.5V, 50pF
Operating Temperature	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Obsolete	Active	Obsolete
RoHS Status	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

CD74HCT03M96 (Texas Instruments) is the primary substitute for new designs and procurement. This part maintains active product status, ensuring long-term availability and supply chain stability. It carries ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), meeting modern environmental and regulatory requirements. The extended operating temperature range (-55°C to 125°C) provides additional thermal margin compared to the original part.

CD74HCT03MT (Texas Instruments) serves as an alternative substitute with identical electrical specifications and ROHS3 compliance. Although classified as obsolete, it remains available in inventory and maintains the same functional performance as the primary substitute.

CD74HCT03M (Harris Corporation) is functionally equivalent but carries RoHS non-compliance status. This part is suitable only for applications where RoHS compliance is not a requirement. Its obsolete status may limit future availability.

All three substitute parts are pin-compatible and functionally interchangeable with the 74HCT03D,652 within the specified electrical and thermal operating ranges.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT03M96 directly replace 74HCT03D,652 in existing designs?

A: Yes. CD74HCT03M96 is a direct replacement. Both parts share identical logic type (4-channel NAND gate with 2 inputs), open drain output configuration, supply voltage range (4.5V ~ 5.5V), output current rating (4mA), input logic levels, propagation delay (24ns @ 4.5V, 50pF), and 14-SOIC package dimensions. Pin-to-pin compatibility is maintained.

Q: What is the difference between CD74HCT03M96 and CD74HCT03MT?

A: Both parts are manufactured by Texas Instruments and share identical electrical specifications. The primary difference is packaging format: CD74HCT03M96 is supplied in Cut Tape (CT) & Digi-Reel format, while CD74HCT03MT is supplied in Tape & Reel (TR) format. Both carry ROHS3 compliance and unlimited MSL rating.

Q: Why is CD74HCT03M (Harris) listed as a substitute if it is RoHS non-compliant?

A: CD74HCT03M maintains functional equivalence with the original part and is included for applications where RoHS compliance is not mandated. However, for new designs and applications subject to environmental regulations, CD74HCT03M96 or CD74HCT03MT are preferred.

Q: Does the extended operating temperature range of substitute parts affect compatibility?

A: No. The substitute parts operate across -55°C to 125°C, which encompasses the original part's -40°C to 125°C range. This extended range provides additional thermal margin and does not impact compatibility in applications using the original temperature specification.

Q: Are all substitute parts available in the same 14-SOIC package?

A: Yes. All substitute parts use the 14-SOIC (0.154", 3.90mm Width) package, ensuring mechanical compatibility with existing PCB layouts and component placement equipment.

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