SN74HC03NG4 Equivalent & Substitute Parts

Part Overview

The SN74HC03NG4 is a NAND Gate IC featuring 4 channels with 2 inputs per channel and open drain output configuration, housed in a 14-PDIP package. This component is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement. The SN74HC03 series maintains consistent functional and electrical characteristics across packaging variants, enabling direct substitution based on mechanical and supply chain requirements.

Substiute Parts

SN74HC03NG4

Texas InstrumentsIn Stock: 971SN74HC03NG4 Datasheet

Current PartRFQ

SN74HC03N

Texas InstrumentsIn Stock: 3800SN74HC03N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74HC03NG4 is determined by the following criteria:

Functional Equivalence: All substitute parts must maintain identical logic type (NAND Gate), circuit count (4 channels), input configuration (2 inputs per channel), and open drain output feature.

Electrical Compatibility: Supply voltage range (2V ~ 6V), quiescent current (2 µA max), output current (5.2mA), input logic levels, and propagation delay (23ns @ 6V, 50pF) must remain unchanged.

Mechanical Compatibility: Through-hole mounting type and 14-DIP package footprint (0.300", 7.62mm) are required for direct board-level substitution.

Compliance Requirements: RoHS3 compliance and REACH unaffected status must be maintained.

The SN74HC03N qualifies as a direct substitute based on identical electrical and mechanical specifications, with the primary distinction being packaging format (tube vs. individual) and product status (active vs. discontinued).

Parameter Comparison

Engineering Selection Recommendations

The SN74HC03N is the primary substitute for the discontinued SN74HC03NG4. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications. The SN74HC03N carries active product status, ensuring ongoing availability and supply chain continuity. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production runs.

Selection between these parts is determined by packaging requirements: the SN74HC03NG4 was supplied in individual packaging, while the SN74HC03N is supplied in tube packaging. For applications requiring individual component handling or specific packaging formats, procurement specifications should reflect the SN74HC03N with appropriate quantity and packaging adjustments.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC03N directly replace the SN74HC03NG4 on existing PCBs?

A: Yes. Both parts share identical 14-DIP footprints (0.300", 7.62mm) and through-hole mounting specifications. No PCB modifications are required for direct substitution.

Q: Are the electrical characteristics identical between these parts?

A: Yes. Supply voltage range (2V ~ 6V), quiescent current (2 µA max), output current (5.2mA), input logic levels, and propagation delay (23ns @ 6V, 50pF) are identical across both parts.

Q: What is the primary difference between SN74HC03NG4 and SN74HC03N?

A: The primary differences are product status (discontinued vs. active) and packaging format (individual vs. tube). Electrical and mechanical specifications remain unchanged.

Q: Do both parts meet current compliance requirements?

A: Yes. Both the SN74HC03NG4 and SN74HC03N are ROHS3 compliant and REACH unaffected, meeting current regulatory standards.

Q: Is the open drain output configuration maintained in the substitute part?

A: Yes. The SN74HC03N retains the open drain output feature, maintaining functional equivalence with the original SN74HC03NG4.