CD4040BCN Equivalent & Substitute Parts

Part Overview

The CD4040BCN is a 12-bit binary counter IC manufactured by onsemi, housed in a 16-DIP package. This device functions as a negative-edge-triggered counter with asynchronous reset capability, operating across a supply voltage range of 3V to 15V and a maximum count rate of 12 MHz. The CD4040BCN is classified as an obsolete product, making identification of compatible substitute parts essential for ongoing system maintenance, repair, and legacy design support.

Substiute Parts

CD4040BCN

onsemiIn Stock: 1806CD4040BCN Datasheet

Current PartRFQ

CD4040BE

Texas InstrumentsIn Stock: 3154CD4040BE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CD4040BE qualifies as a direct substitute for the CD4040BCN based on the following critical parameters:

• Logic Function: Both devices are 12-bit binary counters with identical counting direction (up) and trigger mechanism (negative edge)
• Reset Architecture: Both employ asynchronous reset
• Count Rate: Both support 12 MHz maximum count rate
• Package Configuration: Both use 16-DIP (0.300", 7.62mm) through-hole packaging with identical pin configuration
• Operating Temperature Range: Both operate across -55°C to 125°C
• Series Classification: Both belong to the 4000B logic series

The CD4040BE, manufactured by Texas Instruments, maintains full electrical and mechanical compatibility with the CD4040BCN. The primary distinction is the expanded supply voltage range (3V to 18V versus 3V to 15V), which provides additional operational flexibility without compromising compatibility in applications designed for the original part's voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

The CD4040BE is the appropriate substitute for the CD4040BCN in all applications requiring a 12-bit binary counter with the specified electrical and mechanical characteristics. The CD4040BE offers the advantage of active product status, ensuring continued availability and manufacturing support. Additionally, the CD4040BE carries ROHS3 compliance certification, meeting modern environmental and regulatory requirements for new designs and system upgrades.

For legacy systems currently operating with the CD4040BCN, the CD4040BE provides direct functional replacement without circuit modification, provided the system supply voltage remains within the original 3V to 15V specification range. The expanded voltage tolerance of the CD4040BE (up to 18V) permits operation in higher-voltage applications without redesign.

Frequently Asked Questions (FAQ)

Q: Can the CD4040BE replace the CD4040BCN in existing circuit designs?

A: Yes. The CD4040BE is electrically and mechanically compatible with the CD4040BCN. Both devices share identical pin configurations, logic function, count rate, and operating temperature range. Direct substitution is possible without circuit modification when the supply voltage remains within 3V to 15V.

Q: What is the primary difference between these two parts?

A: The CD4040BE supports an extended supply voltage range (3V to 18V) compared to the CD4040BCN (3V to 15V). Additionally, the CD4040BE is an active product with ROHS3 compliance, while the CD4040BCN is obsolete.

Q: Are the package dimensions identical?

A: Yes. Both the CD4040BCN and CD4040BE use 16-DIP (0.300", 7.62mm) through-hole packaging with identical pin spacing and mechanical footprint.

Q: Does the CD4040BE require any design changes for integration?

A: No design changes are required. The CD4040BE is a pin-for-pin and functionally equivalent replacement. Existing PCB layouts and circuit designs require no modification.

Q: What certifications does the CD4040BE carry?

A: The CD4040BE is ROHS3 compliant and carries REACH Unaffected status, meeting current environmental and regulatory standards for electronic components.