CD74HC194M Equivalent & Substitute Parts

Part Overview

The CD74HC194M is a bidirectional shift register manufactured by Texas Instruments, designed for logic applications requiring 4-bit data manipulation in both directions. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The CD74HC194M96 serves as the direct manufacturer-recommended substitute, offering identical electrical and mechanical specifications with active product status and improved inventory availability.

Substiute Parts

CD74HC194M

Texas InstrumentsIn Stock: 1946CD74HC194M Datasheet

Current PartRFQ

CD74HC194M96

Texas InstrumentsIn Stock: 2182CD74HC194M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CD74HC194M96 qualifies as a direct substitute based on the following critical parameters:

• Identical base product number (74HC194)
• Matching logic type, element count, and bit configuration
• Identical electrical specifications (2V ~ 6V supply, -55°C ~ 125°C operating range)
• Identical package and case dimensions (16-SOIC)
• Matching output type (Push-Pull)
• Equivalent compliance certifications (ROHS3, REACH Unaffected)

The primary distinction between these parts is packaging format and product lifecycle status. The CD74HC194M uses Tube packaging with Last Time Buy status, while the CD74HC194M96 uses Tape & Reel (TR) packaging with Active product status.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC194M96 is the manufacturer-designated substitute for the CD74HC194M. Selection between these parts should be based on the following factors:

CD74HC194M: Use only when Tube packaging is specifically required for manual assembly or low-volume applications. Availability is limited due to Last Time Buy status.

CD74HC194M96: Recommended for new designs and production applications. Active product status ensures long-term availability. Tape & Reel packaging is standard for automated assembly processes and high-volume manufacturing.

Both parts meet ROHS3 compliance and REACH requirements, making them suitable for regulated applications. The electrical and thermal specifications are identical, ensuring functional interchangeability in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can CD74HC194M96 replace CD74HC194M in existing designs?

A: Yes. Both parts share identical electrical specifications, pin configurations, and package dimensions. The only differences are packaging format (Tube vs. Tape & Reel) and product lifecycle status. Circuit-level functionality is unchanged.

Q: What is the significance of Last Time Buy status for CD74HC194M?

A: Last Time Buy indicates that Texas Instruments has discontinued production of this part number. Existing inventory will be depleted, and no future manufacturing runs are planned. The CD74HC194M96 with Active status is the recommended long-term alternative.

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

A: No. Both parts operate across the identical supply voltage range (2V ~ 6V) and temperature range (-55°C ~ 125°C). Thermal and electrical performance characteristics are equivalent.

Q: Does packaging format affect circuit performance?

A: No. Tube and Tape & Reel packaging formats contain identical die and internal construction. The difference is in handling and assembly methodology. Tape & Reel is optimized for automated pick-and-place assembly, while Tube packaging is used for manual handling.

Q: Are both parts RoHS compliant?

A: Yes. Both CD74HC194M and CD74HC194M96 are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.