SN74HC03NS NAND Gate IC Equivalent & Substitute Parts

Part Overview

The SN74HC03NS is a 4-channel 2-input NAND gate IC with open drain output configuration, manufactured by Texas Instruments in 14-SO surface mount packaging. This logic component is discontinued at DiGi Electronics, making substitute part identification essential for ongoing design support and procurement continuity. The open drain architecture enables direct interfacing with multiple voltage domains and pull-up resistor configurations in digital logic applications.

Substiute Parts

SN74HC03NS

Texas InstrumentsIn Stock: 3150SN74HC03NS Datasheet

Current PartRFQ

SN74HC03NSR

Texas InstrumentsIn Stock: 3425SN74HC03NSR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC03NS is determined by strict equivalence across the following critical parameters:

• Logic function: 4-channel 2-input NAND gate with open drain output
• Electrical specifications: 2V to 6V supply voltage, 2 µA maximum quiescent current, 5.2mA maximum output low current
• Propagation delay: 23ns maximum at 6V with 50pF load
• Package: 14-SOIC surface mount form factor
• Compliance: ROHS3 compliant, MSL 1 (Unlimited)

Substitute parts must maintain identical logic architecture, electrical performance within specified tolerances, and physical package compatibility. Packaging format (tube versus tape & reel) does not affect functional substitution but impacts procurement and handling procedures.

Parameter Comparison

Engineering Selection Recommendations

The SN74HC03NSR serves as the direct functional equivalent to the SN74HC03NS. Both parts are manufactured by Texas Instruments with identical electrical specifications, logic architecture, and package geometry. The primary distinction is product status and packaging format: the SN74HC03NSR maintains active production status while the SN74HC03NS is discontinued, and the SN74HC03NSR is supplied in tape & reel format versus tube packaging.

For new designs or ongoing production requiring the SN74HC03NS functionality, the SN74HC03NSR is the appropriate selection. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility. The tape & reel packaging of the SN74HC03NSR is standard for high-volume manufacturing and automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC03NSR directly replace the SN74HC03NS in existing designs?

A: Yes. The SN74HC03NSR is electrically and functionally identical to the SN74HC03NS. Both parts share the same logic function, electrical specifications, propagation delay characteristics, and 14-SOIC package dimensions. No circuit modifications are required.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging contains loose components suitable for manual handling and small-quantity applications. Tape & reel packaging presents components in continuous carrier tape for automated pick-and-place assembly. Both formats contain identical components; packaging selection depends on assembly method and volume requirements.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the SN74HC03NS and SN74HC03NSR maintain identical ROHS3 compliance, MSL 1 (Unlimited) rating, REACH unaffected status, and ECCN/HTSUS classifications.

Q: Why is the SN74HC03NS discontinued?

A: The SN74HC03NS is discontinued at DiGi Electronics. The SN74HC03NSR remains in active production and serves the same market requirements with identical performance characteristics.

Q: What are the critical parameters for substitution compatibility?

A: Substitution compatibility is determined by: 4-channel 2-input NAND gate logic function, open drain output configuration, 2V to 6V supply voltage range, 23ns maximum propagation delay at 6V with 50pF load, and 14-SOIC surface mount package. All these parameters are identical between the main part and substitute.