SN74HC11NS Equivalent & Substitute Parts

Part Overview

The SN74HC11NS is a 3-channel AND gate logic integrated circuit manufactured by Texas Instruments in the 74HC series. This device performs AND logic operations with three independent circuits, each accepting three inputs. The SN74HC11NS is classified as discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design requirements and component procurement.

The functional purpose of this AND gate IC is to provide three independent 3-input AND logic functions in a single 14-pin surface mount package. Substitution becomes critical when the primary part number reaches end-of-life status or when alternative packaging formats are required for manufacturing processes.

Substiute Parts

SN74HC11NS

Texas InstrumentsIn Stock: 4336SN74HC11NS Datasheet

Current PartRFQ

SN74HC11NSR

Texas InstrumentsIn Stock: 3258SN74HC11NSR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74HC11NS is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Equivalence Requirements:

• Logic Type: AND Gate (3 channels, 3 inputs per channel)
• Voltage Supply Range: 2V to 6V
• Quiescent Current: 2 µA maximum
• Output Current Capability: 5.2mA high and low
• Input Logic Levels: 0.5V–1.8V (low), 1.5V–4.2V (high)
• Propagation Delay: 17ns maximum at 6V with 50pF load
• Operating Temperature: -40°C to 85°C

Mechanical Equivalence Requirements:

• Package Type: 14-SOIC (0.209", 5.30mm Width)
• Mounting Type: Surface Mount
• Series: 74HC

Compliance Requirements:

• RoHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The SN74HC11NSR qualifies as a direct substitute because it maintains identical electrical specifications, package dimensions, and compliance certifications while offering active product status and alternative packaging availability (Cut Tape and Digi-Reel formats).

Parameter Comparison

Engineering Selection Recommendations

SN74HC11NSR Selection Basis:

The SN74HC11NSR is the primary substitute for the discontinued SN74HC11NS based on the following engineering factors:

1. Electrical Equivalence: All electrical parameters are identical, including supply voltage range, quiescent current, output current capability, input logic thresholds, propagation delay, and operating temperature range. This ensures direct functional replacement without circuit redesign.

2. Package Compatibility: Both parts use the 14-SOIC (0.209", 5.30mm Width) surface mount package. Pin-to-pin compatibility is maintained, allowing direct PCB layout reuse.

3. Compliance Certification: Both parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, satisfying regulatory and manufacturing requirements.

4. Product Status: The SN74HC11NSR holds active product status with Texas Instruments, ensuring long-term availability and supply chain stability compared to the discontinued SN74HC11NS.

5. Packaging Flexibility: The SN74HC11NSR is available in Cut Tape (CT) and Digi-Reel packaging formats, providing manufacturing process flexibility beyond the standard packaging of the main part.

Selection Criteria Summary:

• Use SN74HC11NSR for new designs and component replenishment
• Verify packaging format compatibility with assembly equipment (Cut Tape vs. Digi-Reel)
• Confirm inventory availability through authorized distributors

Frequently Asked Questions (FAQ)

Q1: Can the SN74HC11NSR be used as a direct replacement for the SN74HC11NS in existing designs?

A: Yes. The SN74HC11NSR is electrically and mechanically equivalent to the SN74HC11NS. All electrical parameters, including logic function, voltage supply range, current specifications, input/output logic levels, propagation delay, and operating temperature range are identical. The 14-SOIC package dimensions are the same, enabling direct PCB layout compatibility without modification.

Q2: What is the difference between the SN74HC11NS and SN74HC11NSR part numbers?

A: The primary difference is product status and packaging format. The SN74HC11NS is discontinued at DiGi Electronics, while the SN74HC11NSR maintains active product status. The SN74HC11NSR is available in Cut Tape (CT) and Digi-