74HCT299D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT299D,652 is a universal shift register logic IC manufactured by NXP USA Inc., featuring 2 elements with 8 bits per element in a 20-SOIC surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part operates within a 4.5V to 5.5V supply voltage range with tri-state output configuration, suitable for digital logic applications requiring shift register functionality.

Substiute Parts

74HCT299D,652

NXP USA Inc.In Stock: 110074HCT299D,652 Datasheet

Current PartRFQ

CD74HCT299M

Texas InstrumentsIn Stock: 1605CD74HCT299M Datasheet

MFR RecommendedRFQ

CD74HCT299M96

Texas InstrumentsIn Stock: 31503CD74HCT299M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HCT299D,652 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Logic Type: Shift Register (2 Element, 8 Bit, Universal Function)
• Output Type: Tri-State
• Voltage - Supply: 4.5V ~ 5.5V
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount
• Base Product Number: 74HCT299
• RoHS Status: ROHS3 Compliant

The substitute parts CD74HCT299M and CD74HCT299M96, both manufactured by Texas Instruments, meet all electrical and mechanical requirements for direct substitution. Both parts maintain identical logic functionality, pin configuration, and package dimensions. The primary differences relate to product status and packaging format (Tube vs. Tape & Reel), which do not affect electrical performance or circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

The CD74HCT299M96 is the primary recommended substitute for the obsolete 74HCT299D,652. This part is manufactured by Texas Instruments with Active product status, ensuring long-term availability and supply chain stability. The CD74HCT299M96 is supplied in Tape & Reel format, which is standard for high-volume production environments and automated assembly processes.

The CD74HCT299M serves as an alternative substitute with Last Time Buy status. This part is available in Tube packaging, suitable for lower-volume applications or manual assembly scenarios. Both Texas Instruments substitutes maintain full electrical and mechanical compatibility with the original NXP part while offering extended operating temperature range (-55°C to 125°C versus -40°C to 125°C).

All substitute parts carry ROHS3 compliance certification, meeting environmental and regulatory requirements equivalent to the original component.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT299M96 be used as a direct replacement for 74HCT299D,652?

A: Yes. Both parts share identical logic functionality, pin configuration, electrical specifications (4.5V ~ 5.5V supply, tri-state output), and 20-SOIC package dimensions. The CD74HCT299M96 offers extended temperature range (-55°C to 125°C) and Active product status, making it suitable for direct substitution in all applications.

Q: What is the difference between CD74HCT299M and CD74HCT299M96?

A: Both parts are electrically identical. The primary difference is packaging format: CD74HCT299M is supplied in Tube packaging, while CD74HCT299M96 is supplied in Tape & Reel format. Tape & Reel packaging is standard for automated assembly and high-volume production. Selection depends on manufacturing process requirements and order quantities.

Q: Are there any pin configuration differences between the NXP and Texas Instruments versions?

A: No. All three parts (74HCT299D,652, CD74HCT299M, and CD74HCT299M96) use identical 20-SOIC pin configurations and are pin-for-pin compatible. No circuit modifications are required for substitution.

Q: Does the extended operating temperature range of the Texas Instruments parts affect compatibility?

A: No. The extended temperature range (-55°C to 125°C on TI parts versus -40°C to 125°C on the NXP part) represents an expanded capability. Applications operating within the original -40°C to 125°C range will function identically on either part.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 74HCT299D,652, CD74HCT299M, and CD74HCT299M96 are all ROHS3 compliant, meeting environmental and regulatory standards for electronic component manufacturing and use.