CD4051BE-NG Equivalent & Substitute Parts

Part Overview

The CD4051BE-NG is a single-circuit 8:1 multiplexer/demultiplexer switch manufactured by Texas Instruments, housed in a 16-pin DIP package. This component functions as an analog switch with SP8T (Single Pole, 8 Throw) open/closed configuration, featuring 240Ohm on-state resistance and operation across a 3V to 20V single supply voltage range. The CD4051BE-NG is designated as Last Time Buy, indicating discontinued production status. Identifying equivalent substitute parts is essential for design continuity, long-term component sourcing, and production planning when original inventory becomes unavailable.

Substiute Parts

CD4051BE-NG

Texas InstrumentsIn Stock: 788CD4051BE-NG Datasheet

Current PartRFQ

CD4051BE

Texas InstrumentsIn Stock: 20366CD4051BE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD4051BE-NG is determined by strict equivalence across the following critical parameters:

Functional Parameters:

• Multiplexer/Demultiplexer configuration: 8:1
• Number of circuits: 1
• On-state resistance: 240Ohm maximum
• Channel-to-channel matching: 5Ohm maximum
• Supply voltage range: 3V ~ 20V (single supply)
• Bandwidth: 20MHz minimum (-3dB)
• Leakage current: 100nA maximum

Physical Parameters:

• Package type: 16-DIP
• Mounting method: Through Hole
• Pin count and spacing: 0.300" (7.62mm)

Compliance Parameters:

• RoHS3 compliance required
• Manufacturer: Texas Instruments

The CD4051BE differs from CD4051BE-NG in packaging specification (Tube versus unspecified) and product status (Active versus Last Time Buy). Both parts share identical electrical specifications and functional characteristics, making CD4051BE a direct functional equivalent suitable for substitution in applications where the CD4051BE-NG is no longer available.

Parameter Comparison

Engineering Selection Recommendations

The CD4051BE serves as the direct substitute for the CD4051BE-NG based on the following engineering criteria:

Electrical Equivalence: All functional parameters—multiplexer configuration, on-state resistance, supply voltage range, bandwidth, and leakage current—are identical between the two parts. No electrical performance degradation or circuit redesign is required.

Physical Compatibility: Both parts utilize the 16-DIP through-hole package with identical pin spacing (0.300", 7.62mm), ensuring direct PCB footprint compatibility without layout modifications.

Compliance Alignment: Both parts maintain ROHS3 compliance, satisfying regulatory requirements for equivalent component substitution.

Availability Advantage: The CD4051BE holds Active product status with 20,300 pieces in stock, compared to the CD4051BE-NG Last Time Buy designation with 706 pieces available. This availability differential makes CD4051BE the preferred selection for ongoing production and future design requirements.

Packaging Consideration: The CD4051BE is supplied in Tube packaging, which is standard for high-volume production environments. Verify packaging requirements against procurement specifications before final selection.

Frequently Asked Questions (FAQ)

Q: Can CD4051BE replace CD4051BE-NG in existing designs without circuit modification?

A: Yes. The CD4051BE is electrically and physically identical to the CD4051BE-NG across all specified parameters. No circuit redesign, PCB layout changes, or firmware modifications are required. Direct substitution is supported.

Q: What is the difference between CD4051BE-NG and CD4051BE?

A: The primary differences are product status and packaging specification. CD4051BE-NG is designated Last Time Buy with unspecified packaging, while CD4051BE is Active status with Tube packaging. All electrical and mechanical specifications are identical.

Q: Are there any parameter variations between the two parts that could affect circuit performance?

A: No. The on-state resistance, channel matching, supply voltage range, bandwidth, leakage current, and operating temperature range are identical. Both parts meet the same electrical specifications for 8:1 multiplexer/demultiplexer applications.

Q: Is the 16-DIP package pinout identical between both parts?

A: Yes. Both parts use the 16-DIP package with 0.300" (7.62mm) pin spacing. Pin assignments and functional connections are identical, enabling direct socket compatibility.

Q: What is the inventory status for each part?

A: CD4051BE-NG has 706 pieces available (Last Time Buy status). CD4051BE has 20,300 pieces available (Active status). For long-term sourcing, CD4051BE is the recommended selection.

Q: Do both parts meet RoHS3 compliance requirements?

A: Yes. Both CD4051BE-NG and CD4051BE are ROHS3 compliant, satisfying environmental and regulatory requirements for equivalent component selection.

Q: Can CD4051BE be used in applications requiring the full -55°C to 125°C operating temperature range?

A: Yes. Both parts are rated for -55°C to 125°C operating temperature, supporting applications across industrial, automotive, and extended-temperature environments.