CD4520BE Equivalent & Substitute Parts

Part Overview

The CD4520BE is a binary counter IC manufactured by Texas Instruments, belonging to the 4000B logic series. This device functions as a 2-element, 4-bit binary counter with both positive and negative trigger capabilities, operating across a wide voltage range of 3V to 18V. The CD4520BE is currently in active production status with 18,401 units available in stock.

The CD4520BE is packaged in a 16-DIP (0.300", 7.62mm) through-hole configuration, making it suitable for breadboard prototyping and traditional PCB assembly methods. Identifying equivalent substitute parts becomes necessary when design requirements shift toward surface-mount technology, when through-hole inventory is unavailable, or when manufacturing processes require alternative packaging formats while maintaining identical electrical functionality.

Substiute Parts

CD4520BE

Texas InstrumentsIn Stock: 18493CD4520BE Datasheet

Current PartRFQ

CD4520BNSR

Texas InstrumentsIn Stock: 3208CD4520BNSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4520BE is determined by strict equivalence across all electrical and functional parameters. The CD4520BNSR qualifies as a direct substitute based on the following criteria:

Electrical Equivalence: Both parts maintain identical logic functionality as 2-element, 4-bit binary counters with asynchronous reset and synchronous timing. Count rate, trigger type (positive and negative), and supply voltage range (3V ~ 18V) are identical across both variants.

Operational Equivalence: Operating temperature range (-55°C ~ 125°C), series designation (4000B), and product status (Active) are maintained without deviation.

Compliance Equivalence: Both parts carry ROHS3 compliance, REACH Unaffected status, and identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Packaging Difference: The sole distinction between the CD4520BE and CD4520BNSR is the mounting technology. The CD4520BE uses through-hole mounting (16-DIP), while the CD4520BNSR uses surface-mount technology (16-SOIC). This packaging difference does not affect electrical or functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Selection between the CD4520BE and CD4520BNSR is determined by PCB assembly methodology and design constraints rather than electrical performance.

CD4520BE Selection: Choose this variant for through-hole assembly processes, breadboard prototyping, or applications where through-hole mounting is specified. This part maintains active production status with substantial inventory availability (18,401 units).

CD4520BNSR Selection: Choose this variant for surface-mount assembly processes, high-density PCB layouts, or manufacturing environments standardized on SMT technology. This part maintains active production status with ROHS3 compliance and identical electrical specifications to the CD4520BE.

Both parts carry identical compliance certifications (ROHS3 Compliant, REACH Unaffected, EAR99 ECCN classification) and maintain active product status with Texas Instruments. Selection criteria are based solely on packaging and assembly methodology requirements, not on functional or electrical differences.

Frequently Asked Questions (FAQ)

Q: Are the CD4520BE and CD4520BNSR electrically identical?

A: Yes. Both parts are functionally equivalent binary counters with identical electrical specifications, including 8 MHz count rate, 3V to 18V supply voltage range, asynchronous reset, synchronous timing, and -55°C to 125°C operating temperature range.

Q: What is the primary difference between these two parts?

A: The CD4520BE uses through-hole mounting (16-DIP package), while the CD4520BNSR uses surface-mount technology (16-SOIC package). This packaging difference does not affect electrical functionality or performance.

Q: Can I substitute the CD4520BE with the CD4520BNSR in an existing design?

A: Substitution requires PCB redesign to accommodate the different package footprint. The CD4520BE uses a 16-DIP through-hole footprint, while the CD4520BNSR uses a 16-SOIC surface-mount footprint. Electrical functionality remains identical after layout modification.

Q: Do both parts have the same compliance certifications?

A: Yes. Both the CD4520BE and CD4520BNSR are ROHS3 Compliant, REACH Unaffected, and carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: Which part should I select for new designs?

A: Selection depends on your assembly process. Use the CD4520BE for through-hole assembly or prototyping. Use the CD4520BNSR for surface-mount assembly or high-density PCB applications. Both maintain active production status.

Q: Are there any moisture sensitivity differences between these parts?

A: The CD4520BE has no applicable moisture sensitivity level (MSL). The CD4520BNSR carries MSL 1 (Unlimited) rating. This difference reflects standard industry practice for through-hole versus surface-mount packaging but does not affect functional equivalence.