BU4069UBF-E2 Equivalent & Substitute Parts

Part Overview

The BU4069UBF-E2 is a 6-channel inverter logic IC manufactured by Rohm Semiconductor in the 4000B series. This device features a 14-SOP package and operates across a supply voltage range of 3V to 16V with a maximum quiescent current of 4 µA. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain the same logic function, pin configuration, and electrical characteristics while offering active product status from alternative manufacturers.

Substiute Parts

BU4069UBF-E2

Rohm SemiconductorIn Stock: 31942BU4069UBF-E2 Datasheet

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CD4069UBM

Texas InstrumentsIn Stock: 1426CD4069UBM Datasheet

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CD4069UBM96

Texas InstrumentsIn Stock: 105324CD4069UBM96 Datasheet

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CD4069UBMT

Texas InstrumentsIn Stock: 1309CD4069UBMT Datasheet

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CD4069UBNSR

Texas InstrumentsIn Stock: 42273CD4069UBNSR Datasheet

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HEC4069UBT,112

NXP USA Inc.In Stock: 1196HEC4069UBT,112 Datasheet

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HEC4069UBT,118

NXP USA Inc.In Stock: 796HEC4069UBT,118 Datasheet

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HEF4069UBT,653

Nexperia USA Inc.In Stock: 10868HEF4069UBT,653 Datasheet

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MC14069UBDG

onsemiIn Stock: 5020MC14069UBDG Datasheet

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MC14069UBDR2G

onsemiIn Stock: 142660MC14069UBDR2G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BU4069UBF-E2 is determined by the following critical parameters:

• Logic function: 6-channel inverter with single input per channel
• Supply voltage compatibility: Minimum 3V, maximum 16V (BU4069UBF-E2 upper limit)
• Input/output logic levels: Low 1V ~ 2.5V, High 4V ~ 12.5V
• Output current capability: Minimum 3mA per output
• Propagation delay: Maximum 40ns at 15V with 50pF load
• Package type: 14-pin SOIC variants
• Compliance: ROHS3 compliant, MSL 1

Substitute parts are grouped by manufacturer and packaging variant while maintaining functional equivalence across the 4000B logic series. All identified substitutes meet or exceed the electrical specifications of the original part, with several offering extended operating temperature ranges and improved quiescent current characteristics.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are ROHS3 compliant with MSL 1 rating, matching the compliance profile of the original BU4069UBF-E2. Selection should prioritize parts with active product status for long-term availability and supply chain stability.

For applications requiring the original 16V maximum supply voltage specification, the BU4069UBF-E2 operates at this upper limit. Substitute parts from Texas Instruments (CD4069 series) and onsemi (MC14069 series) extend the maximum supply voltage to 18V, providing additional design margin. NXP and Nexperia variants limit maximum supply to 15V, which remains compatible with the original 3V to 16V range for applications operating below 15V.

Quiescent current is significantly reduced in all active substitutes (1 µA versus 4 µA), offering improved power efficiency. Output current capability varies: Texas Instruments and NXP/Nexperia parts deliver 3.4mA, while onsemi variants provide 8.8mA per output, suitable for higher-drive applications.

Propagation delay specifications range from 25ns (NXP) to 55ns (onsemi), all exceeding the original 40ns specification. For timing-critical applications, NXP HEC4069UBT variants and Nexperia HEF4069UBT,653 offer the fastest performance.

Package width variations exist within the 14-SOIC family: most substitutes use 0.154" (3.90mm) width, while CD4069UBNSR uses 0.209" (5.30mm) width. Verify PCB footprint compatibility before selection.

Frequently Asked Questions (FAQ)

Q: Can the BU4069UBF-E2 be directly replaced with any of these substitutes?

A: Yes, all listed parts are functional equivalents within the 4000B logic series. They maintain the same 6-channel inverter configuration, single input per channel, and 14-pin SOIC package pinout. Verify supply voltage requirements and package width compatibility with your PCB design.

Q: What is the primary reason for substitution?

A: The BU4069UBF-E2 is classified as obsolete. Active substitute parts from Texas Instruments, NXP, Nexperia, and onsemi ensure continued design support and production availability.

Q: Are there supply voltage limitations when substituting?

A: The original part operates at 3V to 16V. Most substitutes support 3V to 18V, providing additional margin. NXP and Nexperia variants limit maximum supply to 15V. Confirm your application operates within the selected substitute's voltage range.

Q: How do package width variations affect PCB compatibility?

A: Most substitutes use 14-SOIC with 0.154" (3.90mm) width. The CD4069UBNSR variant uses 0.209" (5.30mm) width. Verify your PCB footprint accommodates the selected part's package dimensions before ordering.

Q: Which substitute offers the best propagation delay performance?

A: NXP HEC4069UBT,112 and HEC4069UBT,118 deliver 25ns propagation delay at 15V with 50pF load, the fastest among all listed substitutes. Nexperia HEF4069UBT,653 provides 30ns performance. Original BU4069UBF-E2 specifies 40ns.

Q: Do all substitutes meet the same compliance standards?

A: Yes, all listed substitutes are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's compliance profile.

Q: Which substitute has the highest output current capability?

A: onsemi MC14069UBDG and MC14069UBDR2G deliver 8.8mA per output (high and low), compared to 3mA in the original part and 3.4mA in most other substitutes. Select these variants for applications requiring higher output drive capability.