CD4031BF3A Equivalent & Substitute Parts Reference

Part Overview

The CD4031BF3A is a CMOS 64-stage static shift register manufactured by Texas Instruments, classified as a D-Type logic register element. This component is designed for digital signal processing and data manipulation applications requiring serial-to-parallel or parallel-to-serial conversion across 64-bit stages. The part is currently in active production status with 1250 pieces available in new original inventory. Identifying equivalent and substitute parts becomes necessary when addressing supply chain constraints, regional availability limitations, or specific compliance requirements for end-use applications.

Substiute Parts

CD4031BF3A

Texas InstrumentsIn Stock: 1325CD4031BF3A Datasheet

Current PartRFQ

CD4031BF3A

Harris CorporationIn Stock: 1273CD4031BF3A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD4031BF3A are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters:

Functional Parameters: Logic type (Register, D-Type), number of bits per element (64 Bit), and output type (Complementary) must remain identical to ensure functional compatibility at the circuit level.

Electrical Parameters: Supply voltage range (3V ~ 18V) and operating temperature range (-55°C ~ 125°C) must be maintained or exceeded to guarantee operation within specified environmental conditions.

Physical Parameters: Package type (16-CDIP), case dimensions (0.300", 7.62mm), and mounting method (Through Hole) must be identical to ensure PCB layout compatibility and assembly process alignment.

Product Family: Parts must belong to the 4000B series to maintain design consistency and pin configuration compatibility.

Substitute parts identified through this methodology are considered parametrically equivalent and may be used interchangeably in applications where the specified parameters are the controlling factors for component selection.

Parameter Comparison

Engineering Selection Recommendations

Functional Compatibility: Both the Texas Instruments CD4031BF3A and Harris Corporation CD4031BF3A are parametrically equivalent across all functional and electrical specifications. They share identical logic type, bit capacity, output characteristics, supply voltage range, operating temperature range, and physical packaging.

Compliance Considerations: The Texas Instruments version is ROHS3 compliant with no moisture sensitivity level designation, indicating compliance with current environmental regulations. The Harris Corporation version is RoHS non-compliant and carries a Moisture Sensitivity Level (MSL) rating of 3 (168 Hours), indicating moisture absorption characteristics requiring controlled storage and handling conditions.

Regulatory Status: The Harris Corporation version is marked as REACH Affected, which may impose additional regulatory requirements depending on end-use application jurisdiction and supply chain documentation requirements.

Selection Basis: Component selection should be based on compliance requirements of the target application and end-use market. For applications requiring RoHS3 compliance or operating in regulated environments, the Texas Instruments version is the appropriate choice. The Harris Corporation version may be suitable for applications without RoHS compliance mandates, provided moisture sensitivity handling procedures are implemented during storage, transportation, and assembly.

Frequently Asked Questions (FAQ)

Q: Can the Harris Corporation CD4031BF3A be used as a direct replacement for the Texas Instruments CD4031BF3A?

A: From a functional and electrical standpoint, yes. Both parts are parametrically identical in logic type, bit capacity, output type, supply voltage range, operating temperature range, and physical packaging. However, compliance differences exist. The Harris version is RoHS non-compliant and carries MSL 3 moisture sensitivity, while the Texas Instruments version is ROHS3 compliant with no moisture sensitivity designation. Selection depends on application compliance requirements.

Q: What does RoHS3 compliance mean for the Texas Instruments version?

A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials in electrical and electronic equipment. This is relevant for applications in regulated markets, particularly the European Union and regions with equivalent environmental standards.

Q: What is Moisture Sensitivity Level (MSL) 3, and why does it matter?

A: MSL 3 indicates the Harris Corporation component can absorb moisture and requires controlled storage conditions. The "168 Hours" specification means the component can be exposed to 85°C and 85% relative humidity for up to 168 hours before moisture absorption becomes problematic. Components with MSL ratings require dry storage, desiccant packaging, and controlled handling during assembly to prevent moisture-induced failures.

Q: Are the pin configurations identical between both versions?

A: Yes. Both parts use the 16-CDIP package with identical pin assignments, as they share the same base product number (CD4031) and belong to the same 4000B series. PCB layouts and circuit connections are directly compatible.

Q: What is the significance of the REACH Affected designation on the Harris version?

A: REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) is a European Union regulation governing chemical substances. The Harris version designation indicates the component or its manufacturing process involves substances regulated under REACH. This may require additional documentation and compliance verification for supply chains serving European markets.

Q: Can both parts be used interchangeably in the same circuit design?

A: Functionally and electrically, yes. Both parts operate identically within the specified voltage and temperature ranges and provide identical logic functionality. However, compliance and handling requirements differ. Design decisions should account for application regulatory requirements and supply chain documentation capabilities.

Q: What is the 16-CDIP package, and why is it important for substitution?

A: 16-CDIP (Ceramic Dual In-line Package) is a through-hole package with 16 pins spaced 0.300 inches apart. This standardized package format ensures both parts fit identical PCB footprints and assembly equipment configurations. Package compatibility is a critical substitution criterion for through-hole components.