HCF4076BEY Equivalent & Substitute Parts

Part Overview

The HCF4076BEY is a D-Type flip-flop logic integrated circuit manufactured by STMicroelectronics, configured as a single element with 4-bit positive edge triggering capability. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement requirements. The part operates across a wide supply voltage range of 3V to 20V and features tri-state, non-inverted outputs suitable for digital logic applications requiring edge-triggered data capture and storage.

Substiute Parts

HCF4076BEY

STMicroelectronicsIn Stock: 1042HCF4076BEY Datasheet

Current PartRFQ

CD4076BE

Harris CorporationIn Stock: 5025CD4076BE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCF4076BEY is determined by strict equivalence across the following critical parameters:

Functional Parameters:

• D-Type flip-flop configuration with single element, 4-bit architecture
• Positive edge trigger mechanism
• Tri-state, non-inverted output configuration
• Reset function capability

Electrical Parameters:

• Clock frequency: 16 MHz minimum
• Maximum propagation delay: 180ns @ 15V, 50pF
• Output current capability: 6.8mA (high and low)
• Input capacitance: 5 pF
• Operating temperature range: -55°C ~ 125°C

Physical Parameters:

• 16-DIP package format with 0.300" (7.62mm) pitch
• Through-hole mounting compatibility

Compliance Parameters:

• ECCN classification: EAR99
• HTSUS code: 8542.39.0001

The CD4076BE manufactured by Harris Corporation meets all functional, electrical, and physical equivalence criteria, with documented compatibility within the 4000B logic series.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CD4076BE (Harris Corporation)

The CD4076BE is a direct functional equivalent to the HCF4076BEY across all critical electrical and physical parameters. Both components are members of the 4000B logic series and share identical pin configurations, timing characteristics, and output specifications.

Compliance Considerations:

The HCF4076BEY carries ROHS3 compliance certification, while the CD4076BE is RoHS non-compliant. Applications subject to RoHS regulatory requirements must account for this distinction. Both components share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Supply Voltage Range:

The CD4076BE operates within a supply voltage range of 3V to 18V, compared to the HCF4076BEY range of 3V to 20V. Applications requiring operation above 18V supply voltage cannot use the CD4076BE as a substitute.

Quiescent Current:

The CD4076BE exhibits lower quiescent current consumption (20 µA) relative to the HCF4076BEY (100 µA), providing potential power efficiency advantages in low-power applications.

Obsolescence Status:

Both the HCF4076BEY and CD4076BE are classified as obsolete products. Long-term design strategies should evaluate modern CMOS logic alternatives within the 4000-series family or contemporary logic families offering equivalent functionality with active manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the CD4076BE be used as a direct replacement for the HCF4076BEY in all applications?

A: The CD4076BE is functionally equivalent across timing, output configuration, and pin assignment. However, two constraints apply: (1) applications requiring supply voltages above 18V cannot use the CD4076BE, and (2) designs subject to RoHS compliance requirements must account for the CD4076BE's non-compliant status.

Q: What is the significance of the different quiescent current specifications?

A: The CD4076BE draws 20 µA quiescent current compared to 100 µA for the HCF4076BEY. This difference affects power consumption in standby or idle states. Applications with stringent power budgets benefit from the CD4076BE's lower quiescent current, while this parameter is negligible in high-frequency or high-current applications.

Q: Are the 16-DIP packages physically interchangeable?

A: Yes. Both the HCF4076BEY and CD4076BE use identical 16-DIP (0.300", 7.62mm) through-hole packages. Pin-to-pin compatibility is confirmed across all 16 pins, enabling direct socket substitution without PCB modification.

Q: Why are both parts classified as obsolete?

A: The HCF4076BEY and CD4076BE represent legacy 4000B-series CMOS logic technology. Obsolescence reflects discontinuation of manufacturing by their respective manufacturers. Existing inventory remains available through component distributors, but new designs should evaluate active alternatives.

Q: What compliance certifications differ between these parts?

A: The HCF4076BEY is ROHS3 compliant, while the CD4076BE is RoHS non-compliant. Both share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. Regulatory requirements for end-use applications determine which part is acceptable.

Q: Are there timing or frequency limitations when substituting the CD4076BE?

A: No. Both parts specify identical clock frequency (16 MHz) and maximum propagation delay (180ns @ 15V, 50pF). Timing-critical applications experience no performance degradation with the CD4076BE substitute.

Q: What should be verified before implementing the CD4076BE as a substitute?

A: Confirm that the application's supply voltage requirement does not exceed 18V. Verify that RoHS compliance is not a regulatory requirement. Validate that the lower quiescent current of the CD4076BE does not introduce unexpected circuit behavior in applications with specific power management expectations.