74HC299N,652 Equivalent & Substitute Parts

Part Overview

The 74HC299N,652 is a universal shift register IC manufactured by NXP Semiconductors, featuring 1 element with 8 bits per element in a 20-DIP package. This component is classified as obsolete and operates across a supply voltage range of 2V to 6V with tri-state output capability. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for system redesign, legacy product support, and component procurement continuity.

Substiute Parts

74HC299N,652

NXP SemiconductorsIn Stock: 104474HC299N,652 Datasheet

Current PartRFQ

CD74HC299E

Harris CorporationIn Stock: 2836CD74HC299E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC299N,652 is determined by the following critical parameters:

• Logic Function: Universal shift register with multiplexed register architecture
• Bit Configuration: 1 element, 8 bits per element
• Output Configuration: Tri-state output capability
• Voltage Compatibility: Supply voltage range of 2V to 6V
• Package Compatibility: 20-DIP through-hole mounting (0.300", 7.62mm)
• Series Compatibility: 74HC logic family

The CD74HC299E meets all functional and electrical requirements for direct substitution. Both parts share identical logic architecture, bit configuration, output type, voltage specifications, and package form factor. The substitute maintains compatibility across all critical electrical parameters while operating within the same 74HC series standard.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC299E is a direct functional equivalent to the 74HC299N,652 for applications requiring universal shift register functionality in the 74HC logic family. Both components share identical electrical specifications, package form factor, and operational characteristics.

Compliance Consideration: The main part (74HC299N,652) carries ROHS3 compliance certification, while the substitute (CD74HC299E) is RoHS non-compliant. Selection between these parts depends on regulatory requirements applicable to the end application. For applications subject to RoHS directives, the 74HC299N,652 is the appropriate choice. For legacy systems or applications without RoHS requirements, the CD74HC299E provides functional equivalence.

Temperature Range: The CD74HC299E offers an extended lower operating temperature limit (-55°C versus -40°C), providing broader environmental compatibility for applications requiring operation at lower temperatures.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC299E directly replace the 74HC299N,652 in existing designs?

A: Yes, the CD74HC299E is a direct functional substitute. Both parts share identical logic architecture, 8-bit configuration, tri-state output, 2V to 6V supply voltage range, and 20-DIP package form factor. Pin-for-pin compatibility is maintained.

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

A: The main differences are manufacturer (NXP Semiconductors versus Harris Corporation), RoHS compliance status (ROHS3 compliant versus non-compliant), and operating temperature range (-40°C to 125°C versus -55°C to 125°C).

Q: Are there any package compatibility issues?

A: No. Both parts use identical 20-DIP (0.300", 7.62mm) through-hole packaging. PCB layouts and socket compatibility are maintained without modification.

Q: Which part should be selected for new designs?

A: For new designs, evaluate regulatory requirements. If RoHS compliance is mandatory, the 74HC299N,652 is required. If extended low-temperature operation is needed, the CD74HC299E provides -55°C capability. Both parts are obsolete; consider evaluating modern alternatives for long-term product viability.

Q: Is the voltage supply range identical between both parts?

A: Yes. Both the 74HC299N,652 and CD74HC299E operate across the same 2V to 6V supply voltage range, ensuring electrical compatibility in existing power supply designs.