CD74HC4024PWT Equivalent & Substitute Parts

Part Overview

The CD74HC4024PWT is a 7-bit binary counter IC manufactured by Texas Instruments, designed for digital counting applications requiring negative edge triggering. This component operates across a wide supply voltage range of 2V to 6V and supports count rates up to 35 MHz. The device features asynchronous reset capability and is housed in a 14-TSSOP surface mount package.

The CD74HC4024PWT is classified as obsolete, which necessitates identifying functionally equivalent alternatives for new designs and production continuity. Substitute parts must maintain identical electrical specifications, package dimensions, and pin configurations to ensure direct replacement without circuit redesign.

Substiute Parts

CD74HC4024PWT

Texas InstrumentsIn Stock: 1053CD74HC4024PWT Datasheet

Current PartRFQ

CD74HC4024PWR

Texas InstrumentsIn Stock: 18181CD74HC4024PWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC4024PWT is determined by strict equivalence across the following critical parameters:

• Logic Function: Binary counter with identical bit width (7-bit) and counting direction (up)
• Electrical Performance: Count rate of 35 MHz, supply voltage range 2V to 6V, and asynchronous reset functionality
• Trigger Characteristics: Negative edge triggering for clock input
• Package Compatibility: 14-TSSOP surface mount package with matching pin configuration and thermal characteristics
• Environmental Compliance: ROHS3 compliance and MSL rating of 1

The CD74HC4024PWR qualifies as a parametric equivalent substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction is product status and packaging format availability.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC4024PWR is the primary substitute for the obsolete CD74HC4024PWT. Both components are manufactured by Texas Instruments and maintain identical electrical specifications, package dimensions, and pin configurations. The CD74HC4024PWR carries active product status, ensuring continued availability and manufacturing support.

Selection between these parts should be based on procurement requirements and supply chain considerations. The CD74HC4024PWR is available in Cut Tape (CT) and Digi-Reel packaging formats with significantly higher inventory levels (18,100 units versus 954 units), making it the preferred choice for production applications.

Both parts satisfy ROHS3 compliance and REACH requirements, with MSL rating of 1 indicating unlimited shelf life under standard storage conditions.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC4024PWR directly replace the CD74HC4024PWT without circuit modification?

A: Yes. Both parts are pin-for-pin compatible with identical electrical specifications, package dimensions, and functional characteristics. No circuit redesign is required.

Q: What is the difference between the CD74HC4024PWT and CD74HC4024PWR?

A: The primary differences are product status (obsolete versus active) and packaging availability. The CD74HC4024PWR is supplied in Cut Tape and Digi-Reel formats with higher inventory levels. All electrical and mechanical specifications are identical.

Q: Are there any thermal or environmental differences between these parts?

A: No. Both parts operate across the same temperature range (-55°C to 125°C), support identical supply voltage ranges (2V to 6V), and maintain the same MSL rating of 1.

Q: What does the 14-TSSOP package specification mean?

A: 14-TSSOP refers to a 14-pin Thin Shrink Small Outline Package with a body width of 0.173 inches (4.40mm). This is a surface mount package suitable for automated assembly processes.

Q: Are both parts RoHS compliant?

A: Yes. Both the CD74HC4024PWT and CD74HC4024PWR are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic components.

Q: What is the significance of the 35 MHz count rate specification?

A: The 35 MHz count rate defines the maximum frequency at which the counter can reliably process negative edge trigger pulses. Both substitute parts maintain this specification.