CD4040BF3A Equivalent & Substitute Parts

Part Overview

The CD4040BF3A is a 12-bit binary counter IC manufactured by Texas Instruments, belonging to the 4000B logic series. This component functions as a single-element counter with negative edge triggering and asynchronous reset capability. The device operates across a wide supply voltage range of 3V to 18V and maintains an operating temperature range of -55°C to 125°C, making it suitable for diverse industrial and commercial applications.

The CD4040BF3A is classified as an active product with full ROHS3 compliance and is currently in production. Finding equivalent or substitute parts becomes necessary when the primary part experiences supply constraints, when specific packaging requirements must be met, or when performance parameters require adjustment for particular application demands.

Substiute Parts

CD4040BF3A

Texas InstrumentsIn Stock: 3817CD4040BF3A Datasheet

Current PartRFQ

CD4040BE

Texas InstrumentsIn Stock: 3154CD4040BE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD4040BF3A is determined by strict adherence to the following critical parameters:

Functional Parameters (Must Match):

• Logic Type: Binary Counter
• Number of Bits per Element: 12 Bit
• Number of Elements: 1
• Direction: Up
• Trigger Type: Negative Edge
• Reset: Asynchronous
• Voltage - Supply: 3 V ~ 18 V
• Operating Temperature: -55°C ~ 125°C

Performance Parameters (Must Be Equal or Exceed):

• Count Rate: Minimum 24 MHz

Compliance Parameters (Must Match or Exceed):

• RoHS Status: ROHS3 Compliant or equivalent

Package Compatibility:

• Mounting Type: Through Hole
• Pin Configuration: 16-pin DIP family packages

The CD4040BE qualifies as a direct substitute based on matching all functional parameters, compliance certifications, and mounting type. Variations in package designation (CDIP versus PDIP) and count rate performance are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

CD4040BE as Direct Substitute:

The CD4040BE is qualified as a direct substitute for the CD4040BF3A based on functional equivalence across all critical parameters. Both devices share identical logic architecture, bit configuration, trigger characteristics, and compliance certifications. Both maintain active product status with full ROHS3 compliance, ensuring long-term availability and regulatory alignment.

The primary distinction between these parts is the count rate specification: the CD4040BF3A operates at 24 MHz while the CD4040BE operates at 12 MHz. This difference reflects manufacturing process variations within the same logic family. Selection between these parts depends on application timing requirements. Applications requiring maximum count rate performance must use the CD4040BF3A. Applications with count rate requirements at or below 12 MHz can utilize the CD4040BE without functional compromise.

Both devices employ through-hole mounting in 16-pin DIP-family packages with identical 0.300" (7.62mm) pitch, ensuring mechanical compatibility in PCB layouts designed for either variant.

Frequently Asked Questions (FAQ)

Q: Can CD4040BE replace CD4040BF3A in all applications?

A: The CD4040BE functions as a direct substitute for applications where the maximum count rate requirement does not exceed 12 MHz. If your application requires count rates between 12 MHz and 24 MHz, the CD4040BF3A must be used. Both devices are functionally identical in all other parameters including logic operation, voltage range, temperature range, and pin configuration.

Q: What is the difference between 16-CDIP and 16-DIP packaging?

A: Both designations refer to 16-pin dual inline packages with 0.300" (7.62mm) pitch. CDIP and DIP are variant nomenclatures for the same physical package family. These packages are mechanically and electrically interchangeable in standard through-hole PCB applications. The physical dimensions and pin spacing are identical.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the CD4040BF3A and CD4040BE carry ROHS3 compliance certification, meeting current environmental and regulatory requirements for electronic components.

Q: What supply voltage range do these parts support?

A: Both the CD4040BF3A and CD4040BE operate across the identical supply voltage range of 3V to 18V, providing flexibility for diverse circuit designs and power supply configurations.

Q: Do both parts have the same operating temperature range?

A: Yes. Both devices operate across the identical temperature range of -55°C to 125°C (TA), qualifying them for industrial and extended-temperature applications.

Q: What is the significance of the asynchronous reset function?

A: Asynchronous reset allows the counter to be cleared independent of clock input, providing immediate reset capability without waiting for the next clock edge. Both the CD4040BF3A and CD4040BE implement identical asynchronous reset architecture.

Q: Are these parts currently in production?

A: Yes. Both the CD4040BF3A and CD4040BE maintain active product status with Texas Instruments, ensuring continued availability and manufacturing support.