CD4024BCM Binary Counter IC Equivalent & Substitute Parts

Part Overview

The CD4024BCM is a 7-bit binary counter IC manufactured by onsemi, housed in a 14-SOIC surface mount package. This component functions as a negative edge-triggered counter with asynchronous reset capability, operating across a 3V to 15V supply range with a maximum count rate of 12 MHz. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Logic Type	Binary Counter
Number of Bits	7 Bit
Number of Elements	1
Direction	Up
Trigger Type	Negative Edge
Reset Type	Asynchronous
Count Rate	12 MHz
Voltage Supply Range	3V to 15V
Operating Temperature	-55°C to 125°C
Package Type	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Series	4000B

Substitute Part Grouping Explanation

Substitution eligibility for the CD4024BCM is determined by strict adherence to the following core parameters:

Critical Matching Parameters:

Logic Type: Binary Counter
Number of Bits: 7 Bit
Number of Elements: 1
Direction: Up
Trigger Type: Negative Edge
Reset Type: Asynchronous
Package Type: 14-SOIC (0.154", 3.90mm Width)
Operating Temperature Range: -55°C to 125°C

Allowable Variations:

Voltage Supply Range: Minimum 3V, Maximum ≥15V (CD4024BCM operates 3V–15V; substitutes operating 3V–18V are compatible)
Count Rate: ≥12 MHz (higher rates are acceptable for backward compatibility)
Manufacturer: Different manufacturers within the 4000B series are interchangeable
Packaging Format: Tape & Reel, Cut Tape, or Tube acceptable for equivalent electrical function
Product Status: Active parts preferred over obsolete or discontinued alternatives

All identified substitutes maintain identical pin configuration, logic function, and electrical characteristics within the specified tolerance bands.

Parameter Comparison

Part Number	Manufacturer	Count Rate (MHz)	Voltage Supply (V)	Package	Packaging Format	Product Status	RoHS Status
CD4024BCM	onsemi	12	3–15	14-SOIC	Bulk	Obsolete	Not Specified
MC14024BDR2G	onsemi	12	3–18	14-SOIC	Tape & Reel	Active	ROHS3 Compliant
NLV14024BDR2G	onsemi	12	3–18	14-SOIC	Tape & Reel	Active	ROHS3 Compliant
CD4024BM	Harris Corporation	24	3–18	14-SOIC	Bulk	Obsolete	ROHS3 Compliant
CD4024BM96	Texas Instruments	24	3–18	14-SOIC	Cut Tape & Digi-Reel	Active	ROHS3 Compliant
CD4024BMT	Texas Instruments	24	3–18	14-SOIC	Tape & Reel	Discontinued at DiGi Electronics	ROHS3 Compliant
CD4024BNSR	Texas Instruments	24	3–18	14-SO	Cut Tape & Digi-Reel	Active	ROHS3 Compliant
MC14024BDG	onsemi	12	3–18	14-SOIC	Tube	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: MC14024BDR2G

MC14024BDR2G is the optimal substitute for CD4024BCM. Both parts share identical electrical specifications (12 MHz count rate, 3V–15V compatible supply range) and package geometry (14-SOIC, 0.154" width). MC14024BDR2G holds Active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. Tape & Reel packaging supports automated assembly workflows.

Secondary Recommendation: NLV14024BDR2G

NLV14024BDR2G provides equivalent functionality with Active status and ROHS3 compliance. Electrical parameters match MC14024BDR2G. This part is suitable where onsemi sourcing diversity is required or where specific supply chain requirements favor this variant.

Alternative Recommendation: CD4024BM96

CD4024BM96 (Texas Instruments) offers enhanced performance with 24 MHz count rate, doubling the maximum frequency of CD4024BCM. This part maintains full backward compatibility while providing operational headroom for timing-critical applications. Active product status and ROHS3 compliance ensure availability. Use this substitute when higher count rates provide design margin or future performance scaling.

Secondary Alternative: MC14024BDG

MC14024BDG matches CD4024BCM electrical specifications exactly (12 MHz, 3V–15V compatible). Tube packaging is suitable for manual assembly or lower-volume production. Active status and ROHS3 compliance are confirmed.

Not Recommended: CD4024BM, CD4024BMT, CD4024BNSR

CD4024BM (Harris Corporation) is obsolete. CD4024BMT is discontinued at DiGi Electronics. CD4024BNSR uses 14-SO package (0.209", 5.30mm width), which differs from the original 14-SOIC footprint and requires PCB redesign. These alternatives introduce supply chain risk or design modification requirements.

Frequently Asked Questions (FAQ)

Q: Can MC14024BDR2G directly replace CD4024BCM without PCB modification?

A: Yes. Both parts use identical 14-SOIC package geometry (0.154", 3.90mm width), pin configuration, and electrical function. No PCB layout changes are required. Tape & Reel packaging of MC14024BDR2G is compatible with standard pick-and-place assembly equipment.

Q: What is the difference between CD4024BM96 and MC14024BDR2G?

A: Both are functionally equivalent 7-bit binary counters in 14-SOIC packages. The primary difference is count rate: CD4024BM96 operates at 24 MHz maximum, while MC14024BDR2G operates at 12 MHz. CD4024BM96 provides higher frequency capability and is manufactured by Texas Instruments; MC14024BDR2G is manufactured by onsemi. Both are Active products with ROHS3 compliance.

Q: Why is CD4024BNSR not recommended as a direct substitute?

A: CD4024BNSR uses a 14-SO package (0.209", 5.30mm width) instead of the 14-SOIC package (0.154", 3.90mm width) of CD4024BCM. The different package footprint requires PCB redesign and re-qualification. Use CD4024BNSR only when package change is acceptable.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitutes (MC14024BDR2G, NLV14024BDR2G, CD4024BM96, MC14024BDG) are ROHS3 compliant. CD4024BCM (original part) does not specify RoHS status. Compliance confirmation is available for all active alternatives.

Q: What is the supply voltage compatibility between CD4024BCM and its substitutes?

A: CD4024BCM operates 3V to 15V. All recommended substitutes operate 3V to 18V, providing full backward compatibility. Designs using 3V to 15V supply rails will function identically with substitute parts. The extended 18V upper limit of substitutes does not affect existing circuit operation.

Q: Can I use CD4024BM96 in a design originally specified for CD4024BCM?

A: Yes. CD4024BM96 is fully backward compatible. The 24 MHz count rate exceeds the 12 MHz specification of CD4024BCM, providing additional timing margin. All other electrical and mechanical parameters are compatible. This substitution is suitable for designs where higher frequency capability is beneficial or neutral.

Q: Which substitute offers the best long-term availability?

A: CD4024BM96 (Texas Instruments, Active status, 22,055 units in stock) and MC14024BDR2G (onsemi, Active status, 2,000 units in stock) both offer strong availability. CD4024BM96 has the largest current inventory. Both manufacturers maintain active production of 4000B series logic ICs.

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