CD4043BCN Equivalent & Substitute Parts

Part Overview

The CD4043BCN is a quad S-R latch integrated circuit manufactured by onsemi, featuring tri-state output capability in a 16-DIP package. This component belongs to the 4000B logic series and is classified as obsolete. The CD4043BCN provides four independent 1:1 S-R latch circuits with tri-state outputs, making it suitable for applications requiring latching logic with output control. Due to its obsolete status, identifying equivalent substitute parts is essential for design continuity and procurement planning.

Substiute Parts

CD4043BCN

onsemiIn Stock: 2300CD4043BCN Datasheet

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CD4043BE

Harris CorporationIn Stock: 1319CD4043BE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD4043BCN are identified based on the following critical parameters that determine functional and mechanical compatibility:

• Logic Type: S-R Latch (4 independent channels)
• Output Configuration: Tri-State output
• Circuit Ratio: 1:1
• Package Type: 16-DIP (0.300", 7.62mm)
• Mounting Method: Through Hole
• Supply Voltage Range: Minimum 3V, maximum 15V or higher
• Operating Temperature Range: -55°C ~ 125°C
• Independent Circuits: 4 channels

The CD4043BE meets all these criteria and is classified as a direct substitute for the CD4043BCN.

Parameter Comparison

Engineering Selection Recommendations

The CD4043BE is a direct functional equivalent to the CD4043BCN. Both components share identical logic architecture, package form factor, and operating specifications within the 4000B series. The CD4043BE offers an extended supply voltage range (3V ~ 18V versus 3V ~ 15V) and faster propagation delay (50ns versus 60ns), making it suitable for applications currently using the CD4043BCN.

Both parts are classified as obsolete. The CD4043BCN carries REACH Unaffected status, while the CD4043BE is RoHS non-compliant. Selection between these parts should be based on compliance requirements specific to the application and regional regulations.

Frequently Asked Questions (FAQ)

Q: Can the CD4043BE directly replace the CD4043BCN in existing designs?

A: Yes. Both parts are pin-compatible 16-DIP packages with identical latch logic architecture, tri-state output configuration, and operating temperature range. The CD4043BE's extended voltage range and faster propagation delay are backward-compatible with CD4043BCN specifications.

Q: What are the key differences between CD4043BCN and CD4043BE?

A: The primary differences are manufacturer (onsemi versus Harris Corporation), supply voltage range (15V maximum versus 18V maximum), propagation delay (60ns versus 50ns), and output current specifications. The CD4043BE provides improved performance margins in these parameters.

Q: Are there any compliance or regulatory differences between these parts?

A: The CD4043BCN is REACH Unaffected. The CD4043BE is RoHS non-compliant. Applications subject to RoHS or REACH regulations must verify compliance requirements before selection.

Q: Is the 16-DIP package still available for new designs?

A: Both parts are classified as obsolete. For new designs, evaluation of modern logic latch alternatives in current packaging technologies (such as surface-mount options) is recommended for long-term supply chain stability.

Q: What is the significance of the 1:1 circuit configuration?

A: The 1:1 configuration indicates a single S-R latch per circuit channel. With four independent circuits, the CD4043BCN and CD4043BE each provide four separate latch functions within a single 16-pin package.