CD74HCT03M Equivalent & Substitute Parts

Part Overview

The CD74HCT03M is a NAND Gate IC featuring 4 channels with 2 inputs per channel and open drain output configuration in a 14-SOIC surface mount package. Manufactured by Texas Instruments, this logic component operates across a 4.5V to 5.5V supply voltage range with a maximum propagation delay of 24ns at 4.5V with 50pF load. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design requirements and production needs.

Key Parameters

Parameter	Value
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	-55°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 for the CD74HCT03M is determined by strict equivalence across the following critical parameters:

Logic Type: NAND Gate with identical 4-channel, 2-input configuration
Electrical Specifications: Matching voltage supply range (4.5V ~ 5.5V), quiescent current (2 µA max), output current (4mA), input logic levels, and propagation delay (24ns @ 4.5V, 50pF)
Package Compatibility: 14-SOIC surface mount package with 0.154" width (3.90mm)
Functional Features: Open drain output configuration
Compliance: ROHS3 compliant, MSL 1 rating

Substitute parts must maintain identical electrical performance and physical compatibility to ensure direct replacement without circuit redesign.

Parameter Comparison

Parameter	CD74HCT03M (Main)	CD74HCT03M96	74HCT03D,653
Manufacturer	Texas Instruments	Texas Instruments	Nexperia USA Inc.
Product Status	Discontinued	Active	Active
Logic Type	NAND Gate	NAND Gate	NAND Gate
Number of Circuits	4	4	4
Number of Inputs	2	2	2
Features	Open Drain	Open Drain	Open Drain
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA	2 µA	2 µA
Current - Output High, Low	-, 4mA	-, 4mA	-, 4mA
Input Logic Level - Low	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V
Max Propagation Delay @ V, Max CL	24ns @ 4.5V, 50pF	24ns @ 4.5V, 50pF	24ns @ 4.5V, 50pF
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-SOIC	14-SOIC	14-SOIC
Packaging Format	Tube	Cut Tape & Digi-Reel	Tape & Reel
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

CD74HCT03M96 is the primary direct substitute, manufactured by Texas Instruments with active product status and identical electrical and mechanical specifications. This part maintains full compatibility with the discontinued CD74HCT03M across all critical parameters including supply voltage, logic levels, propagation delay, and 14-SOIC package configuration. Packaging is available in Cut Tape and Digi-Reel format.

74HCT03D,653 manufactured by Nexperia USA Inc. is an alternative substitute with active product status and equivalent electrical performance. This part differs in operating temperature range (-40°C ~ 125°C versus -55°C ~ 125°C) and is supplied in Tape & Reel packaging. Selection of this part is appropriate for applications where the reduced lower temperature limit is acceptable.

Both substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT03M96 be used as a direct replacement for CD74HCT03M?

A: Yes. CD74HCT03M96 is electrically and mechanically equivalent to CD74HCT03M. Both parts share identical logic configuration (4-channel NAND gate with 2 inputs), electrical specifications (4.5V ~ 5.5V supply, 24ns propagation delay, 2 µA quiescent current), and 14-SOIC package. The primary difference is packaging format and active product status.

Q: What is the difference between CD74HCT03M96 and 74HCT03D,653?

A: Both are functionally equivalent NAND gate ICs with identical electrical performance and 14-SOIC packaging. The key difference is operating temperature range: CD74HCT03M96 operates from -55°C to 125°C, while 74HCT03D,653 operates from -40°C to 125°C. Additionally, they are manufactured by different suppliers (Texas Instruments versus Nexperia USA Inc.) and supplied in different packaging formats.

Q: Are the 14-SOIC packages physically identical between all three parts?

A: Yes. All three parts use the 14-SOIC package with 0.154" width (3.90mm), ensuring identical PCB footprint and mounting compatibility.

Q: Does the operating temperature difference between substitutes affect circuit performance?

A: The operating temperature range specifies the environmental conditions under which the part functions within specification. Selection between -55°C ~ 125°C and -40°C ~ 125°C depends on application requirements. For applications requiring operation below -40°C, CD74HCT03M96 is required.

Q: Are all substitute parts RoHS compliant?

A: Yes. CD74HCT03M96 and 74HCT03D,653 are both ROHS3 compliant with MSL 1 rating, matching the compliance profile of the original CD74HCT03M.

Q: What packaging formats are available for the substitute parts?

A: CD74HCT03M96 is available in Cut Tape and Digi-Reel format. 74HCT03D,653 is available in Tape & Reel format. Selection depends on production volume and assembly requirements.

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