CD4724BCN Equivalent & Substitute Parts

Part Overview

The CD4724BCN is a D-Type, Addressable 8-bit latch IC in a 16-PDIP package, designed for digital logic applications requiring addressable storage and retrieval of data. This component operates across a wide supply voltage range of 3V to 15V and is part of the 4000B logic series. The CD4724BCN is currently classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

CD4724BCN

onsemiIn Stock: 1580CD4724BCN Datasheet

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CD4724BE

Texas InstrumentsIn Stock: 1478CD4724BE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4724BCN is determined by strict equivalence across the following critical parameters:

• Logic Architecture: D-Type, Addressable configuration with 1:8 channel multiplexing
• Electrical Performance: 50ns propagation delay and standard output type
• Package Compatibility: 16-DIP (0.300", 7.62mm) through-hole mounting
• Supply Voltage: Minimum 3V to 15V operating range (substitute must support this range or broader)
• Temperature Range: -55°C to 125°C operational specification
• Output Drive Capability: 8.8mA output current specification

The CD4724BE from Texas Instruments meets all substitution criteria, maintaining identical logic functionality, package form factor, and core electrical characteristics while offering active product status and enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The CD4724BE from Texas Instruments is the direct functional equivalent for CD4724BCN applications. Selection of the CD4724BE is supported by the following engineering factors:

Product Status: The CD4724BE maintains active product status with ongoing manufacturer support, ensuring long-term availability and supply chain reliability compared to the obsolete CD4724BCN.

Electrical Compatibility: Both devices share identical logic architecture, propagation delay (50ns), operating temperature range (-55°C to 125°C), and package form factor (16-DIP). The CD4724BE operates across a broader supply voltage range (3V to 18V), providing enhanced flexibility for systems operating at the upper voltage limits.

Output Drive Consideration: The CD4724BE specifies 6.8mA output current compared to 8.8mA for the CD4724BCN. This reduction in output drive capability is acceptable for standard logic applications where the lower current remains sufficient for typical load impedances and fan-out requirements.

Compliance and Certification: The CD4724BE carries ROHS3 compliance certification, meeting modern environmental and regulatory standards. Both devices maintain REACH Unaffected status and identical ECCN/HTSUS classifications.

Packaging and Mounting: Identical 16-DIP through-hole package specifications ensure direct mechanical and electrical compatibility without PCB redesign or adapter requirements.

Frequently Asked Questions (FAQ)

Q: Can the CD4724BE directly replace the CD4724BCN without circuit modifications?

A: Yes. The CD4724BE is a direct pin-for-pin and functional equivalent. Identical package geometry (16-DIP), logic configuration (D-Type, Addressable 1:8), and electrical timing (50ns propagation delay) permit direct substitution in existing PCB designs without modification.

Q: What is the significance of the lower output current specification (6.8mA vs 8.8mA) in the CD4724BE?

A: The CD4724BE output current of 6.8mA remains within standard logic drive specifications for typical digital applications. This reduction does not affect functionality in standard logic circuits where output impedance and fan-out requirements are within normal operating parameters. Applications requiring maximum output drive should evaluate specific load characteristics.

Q: Why is the CD4724BCN classified as obsolete?

A: The CD4724BCN is an older generation component from the 4000B logic series. Obsolescence reflects discontinuation of manufacturing and distribution by the original manufacturer (onsemi). The CD4724BE from Texas Instruments continues active production of the equivalent device.

Q: Does the broader supply voltage range (3V to 18V) of the CD4724BE provide any advantage?

A: The extended upper voltage limit (18V vs 15V) provides operational flexibility for systems designed to operate at higher supply voltages. For applications constrained to the original 3V to 15V range, both devices perform identically.

Q: Are there any compliance or certification differences between the two parts?

A: The CD4724BE carries ROHS3 compliance certification, meeting current environmental standards. Both devices maintain identical REACH Unaffected status and regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001).

Q: What packaging options are available for the CD4724BE?

A: The CD4724BE is supplied in Tube packaging. The 16-DIP form factor and through-hole mounting type remain consistent with the original CD4724BCN specification.