CD4020BPW Binary Counter IC - Equivalent & Substitute Parts

Part Overview

The CD4020BPW is a 14-bit binary counter IC manufactured by Texas Instruments, belonging to the 4000B logic series. This component functions as a negative-edge-triggered counter with asynchronous reset capability, designed for digital counting and frequency division applications across a wide supply voltage range of 3V to 18V.

The CD4020BPW is designated as Last Time Buy, indicating discontinued production. Identifying functionally equivalent substitute parts is essential for ongoing design support, production continuity, and long-term component availability.

Substiute Parts

CD4020BPW

Texas InstrumentsIn Stock: 1417CD4020BPW Datasheet

Current PartRFQ

CD4020BPWR

Texas InstrumentsIn Stock: 7031CD4020BPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4020BPW is determined by strict equivalence across the following critical parameters:

• Logic Function: Binary counter with identical bit width (14-bit) and counting direction (up)
• Trigger Characteristics: Negative-edge triggering and asynchronous reset must match exactly
• Electrical Performance: Count rate of 24 MHz and supply voltage range of 3V to 18V must be maintained
• Physical Form Factor: 16-TSSOP package with surface mount capability
• Environmental Compliance: ROHS3 compliance and operating temperature range of -55°C to 125°C

The CD4020BPWR qualifies as a direct substitute based on identical electrical specifications and package geometry. The primary distinction is packaging format: the original part uses Tube packaging, while the substitute uses Tape & Reel (TR) format.

Parameter Comparison

Engineering Selection Recommendations

The CD4020BPWR is a direct functional equivalent to the CD4020BPW. Both parts share identical electrical characteristics, pin configuration, and performance specifications within the 16-TSSOP package.

The CD4020BPWR is recommended for new designs and production continuity due to its Active product status, ensuring long-term availability. The CD4020BPW, classified as Last Time Buy, has limited remaining inventory and should be reserved for legacy system support only.

From a compliance perspective, both parts maintain ROHS3 compliance and are REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

The distinction between Tube and Tape & Reel packaging is a logistics consideration. Tape & Reel format is standard for high-volume automated assembly processes, while Tube packaging is typically used for lower-volume or manual assembly applications. The electrical and mechanical performance of the die and package remains identical.

Frequently Asked Questions (FAQ)

Q: Can CD4020BPWR be used as a direct replacement for CD4020BPW in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The CD4020BPWR can be substituted without circuit modification, PCB redesign, or firmware changes. The only difference is packaging format (Tape & Reel versus Tube).

Q: What does "Last Time Buy" status mean for the CD4020BPW?

A: Last Time Buy indicates that the manufacturer has discontinued production and will not accept new orders after a specified cutoff date. Existing inventory is limited. The CD4020BPWR, with Active status, is the recommended long-term alternative.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts operate identically across all specified parameters: 14-bit binary counting, 24 MHz count rate, negative-edge triggering, asynchronous reset, and 3V to 18V supply voltage range.

Q: Does packaging format affect circuit performance?

A: No. Tube and Tape & Reel packaging contain identical die and lead frames. The packaging format is a supply chain and assembly process consideration only. Electrical performance, timing, and reliability are unaffected.

Q: Are both parts suitable for the full operating temperature range?

A: Yes. Both CD4020BPW and CD4020BPWR are rated for -55°C to 125°C operation, making them suitable for industrial, automotive, and military applications requiring extended temperature performance.

Q: What is the significance of ROHS3 compliance for both parts?

A: ROHS3 compliance confirms that both parts meet European Union restrictions on hazardous substances, specifically the absence of lead, cadmium, mercury, and other restricted materials. This is a regulatory requirement for components sold in EU markets and many other regions.