CD4047BCN Equivalent & Substitute Parts

Part Overview

The CD4047BCN is a monostable/astable multivibrator logic IC manufactured by onsemi, designed for timing and pulse generation applications. It operates across a wide supply voltage range of 3V to 15V with a propagation delay of 80 nanoseconds. The device is currently classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The CD4047 series remains widely available through alternative manufacturers, ensuring design continuity despite the original part's discontinued status.

Substiute Parts

CD4047BCN

onsemiIn Stock: 1952CD4047BCN Datasheet

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CD4047BE

Texas InstrumentsIn Stock: 2213CD4047BE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4047BCN is determined by the following critical parameters:

• Logic Function: Both astable and monostable multivibrator operation must be supported
• Propagation Delay: 80 ns specification must be maintained
• Supply Voltage Range: Minimum 3V to 15V compatibility required
• Package Type: 14-DIP through-hole form factor with 0.300" (7.62mm) pitch
• Independent Circuits: Single circuit configuration
• Operating Temperature Range: -55°C to 125°C

The CD4047BE from Texas Instruments meets all these core substitution criteria while maintaining functional and electrical equivalence. Both parts share the same base product number (CD4047) and belong to the 4000B logic series.

Parameter Comparison

Engineering Selection Recommendations

The CD4047BE from Texas Instruments is the direct functional equivalent for CD4047BCN applications. Selection is based on the following engineering factors:

Product Status: The CD4047BE maintains active product status with ongoing manufacturer support, whereas the CD4047BCN is obsolete. This ensures long-term availability and supply chain reliability.

Compliance & Certifications: The CD4047BE is ROHS3 compliant, meeting current environmental and regulatory standards. Both parts maintain REACH Unaffected status and EAR99 export classification.

Electrical Performance: The CD4047BE provides a wider supply voltage range (3V to 18V versus 3V to 15V), offering greater design flexibility. Output current specifications are lower on the TI variant (6.8 mA versus 8.8 mA), which remains adequate for standard logic-level applications and reduces power dissipation.

Physical Compatibility: Identical 14-DIP package geometry ensures direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can CD4047BE replace CD4047BCN in existing designs? A: Yes. Both parts share identical logic function, propagation delay, operating temperature range, and package form factor. The CD4047BE is electrically compatible and can be substituted directly on the PCB.

Q: What are the differences between these parts? A: The primary differences are manufacturer (onsemi versus Texas Instruments), product status (obsolete versus active), output current capability (8.8 mA versus 6.8 mA), and maximum supply voltage (15V versus 18V). The CD4047BE offers a wider operating voltage range and lower power consumption.

Q: Is the lower output current of the CD4047BE a concern? A: For standard logic-level applications, 6.8 mA output current is sufficient. If your design requires the full 8.8 mA output capability, verify actual load requirements before substitution. Most CD4047 applications operate well within the TI variant's specifications.

Q: Are there any package considerations? A: Both parts use identical 14-DIP through-hole packaging with 0.300" (7.62mm) pitch. No PCB modifications are required for physical substitution.

Q: Why is the CD4047BCN listed as obsolete? A: onsemi has discontinued this part number. The CD4047 function remains available through active manufacturers like Texas Instruments, ensuring design continuity.

Q: What certifications apply to the substitute part? A: The CD4047BE is ROHS3 compliant and maintains REACH Unaffected status, meeting current environmental regulations for electronic components.