SN74HC151NS Equivalent & Substitute Parts

Part Overview

The SN74HC151NS is a Data Selector/Multiplexer integrated circuit manufactured by Texas Instruments, featuring a 1 x 8:1 multiplexing configuration in a 16-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The SN74HC151NS operates as a single-supply logic device suitable for digital signal routing and data selection applications in embedded systems and industrial electronics.

Identification of equivalent and substitute parts is necessary due to the Last Time Buy status of the SN74HC151NS. Locating functionally compatible alternatives ensures design continuity and long-term supply chain reliability for applications requiring 8:1 multiplexing functionality.

Substiute Parts

SN74HC151NS

Texas InstrumentsIn Stock: 3505SN74HC151NS Datasheet

Current PartRFQ

SN74HC151NSR

Texas InstrumentsIn Stock: 8123SN74HC151NSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC151NS is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Identical circuit configuration (1 x 8:1 multiplexer)
• Matching voltage supply range (2V ~ 6V single supply)
• Equivalent output current specifications (7.8mA high and low)
• Identical operating temperature range (-40°C ~ 85°C)

Mechanical & Packaging Requirements:

• Identical package type (16-SOIC with 0.209" / 5.30mm width)
• Surface mount mounting type
• Same supplier device package designation (16-SO)

Compliance Requirements:

• ROHS3 compliance maintained
• Moisture Sensitivity Level 1 (Unlimited)

The SN74HC151NSR qualifies as a direct substitute based on full parameter alignment across all electrical, mechanical, and compliance criteria. The primary distinction is packaging format (Tape & Reel versus individual units) and product status (Active versus Last Time Buy).

Parameter Comparison

Engineering Selection Recommendations

SN74HC151NSR Selection Basis:

The SN74HC151NSR is the direct functional equivalent of the SN74HC151NS. Both components share identical electrical specifications, package geometry, and compliance certifications. The SN74HC151NSR maintains Active product status, ensuring continued availability and long-term supply chain support compared to the Last Time Buy designation of the SN74HC151NS.

Selection of the SN74HC151NSR is appropriate for new designs and production continuity. The component maintains full ROHS3 compliance and identical thermal operating parameters. The Tape & Reel packaging format of the SN74HC151NSR is standard for high-volume manufacturing environments and automated assembly processes.

For applications with existing inventory of SN74HC151NS units, both parts are electrically and mechanically interchangeable without circuit modification or re-qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC151NSR directly replace the SN74HC151NS in existing designs?

A: Yes. The SN74HC151NSR is a direct substitute. All electrical parameters, package dimensions, pin configurations, and operating characteristics are identical. No circuit modifications are required.

Q: What is the difference between SN74HC151NS and SN74HC151NSR?

A: The primary differences are product status and packaging format. The SN74HC151NS is Last Time Buy with individual unit packaging, while the SN74HC151NSR is Active product supplied in Tape & Reel format. Electrical and mechanical specifications are identical.

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

A: No. Both components are ROHS3 compliant with identical Moisture Sensitivity Level 1 (Unlimited) ratings. Compliance certifications are equivalent.

Q: What is the significance of the Last Time Buy status for SN74HC151NS?

A: Last Time Buy indicates that Texas Instruments has discontinued production of this specific part number. Existing inventory is limited. The SN74HC151NSR, with Active status, is the recommended alternative for ongoing supply assurance.

Q: Can the SN74HC151NSR be used in automated assembly processes?

A: Yes. The Tape & Reel packaging format of the SN74HC151NSR is designed for automated pick-and-place assembly equipment and high-volume manufacturing environments.

Q: Are the pin configurations identical between SN74HC151NS and SN74HC151NSR?

A: Yes. Both components use the 16-SOIC package with identical pin assignments and functionality. PCB layouts require no modification.

Q: What voltage range is supported by both parts?

A: Both the SN74HC151NS and SN74HC151NSR operate with a single supply voltage range of 2V to 6V, suitable for standard logic-level applications.