74HC4024DB,118 Equivalent & Substitute Parts

Part Overview

The 74HC4024DB,118 is a 7-bit binary counter IC manufactured by NXP Semiconductors in a 14-SSOP surface mount package. This logic component functions as a negative edge-triggered counter with asynchronous reset capability, operating across a 2V to 6V supply voltage range. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74HC4024DB,118

NXP SemiconductorsIn Stock: 115174HC4024DB,118 Datasheet

Current PartRFQ

CD74HC4024PW

Texas InstrumentsIn Stock: 3071CD74HC4024PW Datasheet

MFR RecommendedRFQ

CD74HC4024PWR

Texas InstrumentsIn Stock: 18181CD74HC4024PWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HC4024DB,118 are identified based on strict equivalence across the following critical parameters:

• Base product number: 74HC4024
• Logic type: Binary Counter
• Bit configuration: 7-bit, single element
• Counter direction: Up
• Reset type: Asynchronous
• Trigger mechanism: Negative edge
• Supply voltage range: 2V to 6V
• Mounting type: Surface mount

The substitute parts CD74HC4024PW and CD74HC4024PWR, both manufactured by Texas Instruments, maintain functional equivalence through identical logic architecture and electrical specifications. Package variations (14-TSSOP vs. 14-SSOP) represent mechanical differences that do not affect core counter functionality when PCB layout accommodates the alternative footprint.

Parameter Comparison

Engineering Selection Recommendations

CD74HC4024PWR is the primary substitute for the 74HC4024DB,118. This Texas Instruments part maintains active product status, ensuring long-term availability and supply chain reliability. Both substitute parts carry ROHS3 compliance and REACH unaffected status, matching the environmental and regulatory certifications of the original part.

The 14-TSSOP package used by both Texas Instruments alternatives is mechanically compatible with standard surface mount assembly processes. PCB layout modification is required to accommodate the narrower 4.40mm package width compared to the original 5.30mm SSOP footprint.

CD74HC4024PW remains available as a secondary option, though its discontinued status at DiGi Electronics may limit future procurement viability compared to the active CD74HC4024PWR variant.

Frequently Asked Questions (FAQ)

Q: Can CD74HC4024PWR directly replace 74HC4024DB,118 without design changes?

A: Electrical and functional compatibility is complete. The 14-TSSOP package requires PCB footprint modification from the original 14-SSOP layout. Pin assignments and signal timing remain identical across all three parts.

Q: What is the significance of the count rate difference (90 MHz vs. 35 MHz)?

A: The 74HC4024DB,118 specifies a maximum count rate of 90 MHz, while both Texas Instruments substitutes specify 35 MHz. Applications operating below 35 MHz encounter no functional limitation. Designs requiring operation above 35 MHz must retain the original NXP part or identify alternative counter architectures.

Q: Are the operating temperature ranges compatible?

A: The Texas Instruments substitutes support -55°C to 125°C, which encompasses the original -40°C to 125°C range. This extended lower temperature specification provides additional operational margin in cold environment applications.

Q: Why are there two Texas Instruments part numbers (CD74HC4024PW and CD74HC4024PWR)?

A: Both parts are functionally identical 74HC4024 counters in 14-TSSOP packages. CD74HC4024PW is supplied in tube packaging, while CD74HC4024PWR is supplied in cut tape and Digi-Reel formats. CD74HC4024PWR maintains active product status and is recommended for new designs.

Q: What compliance certifications apply to substitute parts?

A: All three parts carry ROHS3 compliance and REACH unaffected status. ECCN classification is EAR99 for all variants, and HTSUS code 8542.39.0001 applies uniformly across the product group.