SN74HC7002D NOR Gate IC Equivalent & Substitute Parts

Part Overview

The SN74HC7002D is a 4-channel NOR gate logic IC manufactured by Texas Instruments, housed in a 14-SOIC surface mount package. This component implements Schmitt trigger logic with dual inputs per channel, operating across a 2V to 6V supply voltage range. The part is currently discontinued at DiGi Electronics, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

SN74HC7002D

Texas InstrumentsIn Stock: 2434SN74HC7002D Datasheet

Current PartRFQ

SN74HC7002DR

Texas InstrumentsIn Stock: 2394SN74HC7002DR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC7002D is determined by strict equivalence across the following critical parameters:

• Logic Type: NOR Gate with identical 4-channel, 2-input configuration
• Schmitt Trigger Feature: Required for input hysteresis characteristics
• Voltage Supply Range: 2V ~ 6V (exact match)
• Current Specifications: Quiescent current 2 µA maximum; output drive 5.2mA high and low
• Propagation Delay: 22ns maximum at 6V with 50pF load
• Operating Temperature Range: -40°C ~ 85°C
• Package: 14-SOIC surface mount form factor
• Compliance: ROHS3 compliant, MSL Level 1

The SN74HC7002DR qualifies as a direct substitute based on identical electrical and mechanical specifications. The primary distinction is product status and packaging format availability.

Parameter Comparison

Engineering Selection Recommendations

The SN74HC7002DR is the direct equivalent for the discontinued SN74HC7002D. Both parts maintain identical electrical performance, thermal operating range, and compliance certifications. The SN74HC7002DR carries active product status, ensuring continued availability and supply chain support. The packaging format difference (Cut Tape and Digi-Reel options for the DR variant) accommodates various manufacturing and assembly workflows without affecting functional compatibility. Selection of the SN74HC7002DR eliminates obsolescence risk while preserving all circuit design parameters.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC7002DR be used as a direct replacement for the SN74HC7002D in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including logic function, voltage supply range, propagation delay, output drive capability, and operating temperature range. Pin configuration and package dimensions are identical.

Q: What is the difference between the SN74HC7002D and SN74HC7002DR?

A: The primary differences are product status and packaging availability. The SN74HC7002D is discontinued; the SN74HC7002DR is active. The DR variant offers Cut Tape and Digi-Reel packaging options, while the D variant uses standard packaging. Electrical specifications are identical.

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

A: No. Both parts carry identical ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status. Regulatory and environmental certifications are equivalent.

Q: Does the 14-SOIC package dimension remain the same for both parts?

A: Yes. Both the SN74HC7002D and SN74HC7002DR use the 14-SOIC package with 0.154" width (3.90mm). PCB footprints and assembly processes are identical.

Q: What supply voltage range is supported by the SN74HC7002DR?

A: The SN74HC7002DR operates across a 2V to 6V supply voltage range, identical to the SN74HC7002D. This range accommodates both 3.3V and 5V logic systems.