CD74HC299M Equivalent & Substitute Parts

Part Overview

The CD74HC299M is a universal shift register IC manufactured by Texas Instruments, designed for multiplexed 8-bit shift register applications in logic circuits. This device features tri-state output capability and operates across a wide supply voltage range of 2V to 6V, making it suitable for diverse digital logic applications. The main part is currently in Last Time Buy status, indicating limited availability and the necessity to identify equivalent substitute components for ongoing production and maintenance requirements.

Substiute Parts

CD74HC299M

Texas InstrumentsIn Stock: 2280CD74HC299M Datasheet

Current PartRFQ

CD74HC299M96

Texas InstrumentsIn Stock: 1734CD74HC299M96 Datasheet

MFR RecommendedRFQ

74HC299D,653

Nexperia USA Inc.In Stock: 288974HC299D,653 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD74HC299M are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Logic Type & Function: Register, Multiplexed with Universal function capability
• Bit Configuration: 1 Element, 8 Bit per Element
• Output Characteristics: Tri-State output type
• Electrical Specifications: Supply voltage range 2V ~ 6V; Operating temperature range within or compatible with -55°C ~ 125°C
• Package Compatibility: 20-SOIC surface mount package with 0.295" (7.50mm) width
• Compliance Standards: ROHS3 Compliant; MSL Level 1

The substitute parts CD74HC299M96 (Texas Instruments) and 74HC299D,653 (Nexperia USA Inc.) meet these core substitution criteria. Both maintain identical logic functionality, bit configuration, output type, and package specifications. Variations in product status and operating temperature ranges are noted but do not preclude substitution within specified application parameters.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are qualified replacements for the CD74HC299M based on electrical and mechanical parameter equivalence. The CD74HC299M96 (Texas Instruments) maintains identical specifications including the extended operating temperature range of -55°C ~ 125°C and is available in Active product status with alternative packaging options (Cut Tape and Digi-Reel). The 74HC299D,653 (Nexperia USA Inc.) provides an equivalent alternative with a slightly narrower operating temperature range of -40°C ~ 125°C and is supplied in Tape & Reel packaging format.

Selection between substitutes should be based on:

• Availability and Lead Time: Both substitutes are in Active status with current inventory
• Packaging Requirements: CD74HC299M96 offers flexible packaging (Cut Tape or Digi-Reel); 74HC299D,653 is supplied in Tape & Reel format
• Temperature Range Requirements: For applications requiring operation below -40°C, CD74HC299M96 is the appropriate selection
• Compliance Verification: Both parts maintain ROHS3 compliance and MSL Level 1 rating

Frequently Asked Questions (FAQ)

Q: Can CD74HC299M96 be used as a direct replacement for CD74HC299M?

A: Yes. CD74HC299M96 is a direct functional and mechanical equivalent. Both are manufactured by Texas Instruments, share identical logic specifications (Register, Multiplexed, 8-bit, Universal function, Tri-State output), operate at 2V ~ 6V supply voltage, and are packaged in 20-SOIC format. The primary difference is product status (Active vs. Last Time Buy) and packaging format options.

Q: What is the difference between CD74HC299M96 and 74HC299D,653?

A: Both parts are functionally equivalent shift registers with identical logic type, bit configuration, output characteristics, and package specifications. The key differences are: manufacturer (Texas Instruments vs. Nexperia USA Inc.), operating temperature range (CD74HC299M96 supports -55°C ~ 125°C; 74HC299D,653 supports -40°C ~ 125°C), and packaging format (Cut Tape/Digi-Reel vs. Tape & Reel).

Q: Are there any pin compatibility issues when substituting these parts?

A: No. All three parts use the 20-SOIC package with identical pinout and electrical characteristics. Pin-for-pin substitution is supported without circuit modification.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. CD74HC299M, CD74HC299M96, and 74HC299D,653 are all ROHS3 compliant with MSL Level 1 rating, ensuring equivalent environmental and regulatory compliance.

Q: Which substitute should I select for high-temperature applications below -40°C?

A: CD74HC299M96 is the appropriate selection, as it maintains the extended operating temperature range of -55°C ~ 125°C. The 74HC299D,653 has a minimum operating temperature of -40°C and is not suitable for applications requiring operation below this threshold.

Q: What packaging formats are available for each substitute?

A: CD74HC299M is supplied in Tube packaging. CD74HC299M96 is available in Cut Tape (CT) and Digi-Reel® formats. 74HC299D,653 is supplied in Tape & Reel (TR) format. Packaging selection should align with production assembly requirements and inventory management practices.