74HC75DB,112 Equivalent & Substitute Parts

Part Overview

The 74HC75DB,112 is a D-Type Transparent Latch logic IC manufactured by Nexperia USA Inc., configured as a dual 2-bit transparent latch with differential output. This component operates across a 2V to 6V supply voltage range and features 2 independent circuits in a 16-SSOP surface mount package. The part is currently classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74HC75DB,112

Nexperia USA Inc.In Stock: 122074HC75DB,112 Datasheet

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CD74HC75PW

Texas InstrumentsIn Stock: 1783CD74HC75PW Datasheet

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CD74HC75PWR

Texas InstrumentsIn Stock: 2241CD74HC75PWR Datasheet

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CD74HC75PWT

Texas InstrumentsIn Stock: 1758CD74HC75PWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC75DB,112 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 2:2
• Output Type: Differential
• Independent Circuits: 2
• Voltage - Supply: 2V ~ 6V
• Current - Output High, Low: 5.2mA, 5.2mA
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

• Propagation Delay Time: 10ns to 11ns (substitute parts may have improved timing)
• Operating Temperature Range: Substitutes may extend the lower temperature limit to -55°C
• Package / Case: 16-TSSOP (0.173", 4.40mm Width) is mechanically compatible with 16-SSOP
• Manufacturer: Texas Instruments CD74HC75 series meets all electrical specifications
• Product Status: Active or Last Time Buy status acceptable for obsolete part replacement

All three substitute parts (CD74HC75PW, CD74HC75PWR, CD74HC75PWT) meet these criteria and are derived from the same 74HC75 base product number.

Parameter Comparison

Engineering Selection Recommendations

CD74HC75PWR (Texas Instruments) - Primary Selection

CD74HC75PWR is the recommended substitute for the obsolete 74HC75DB,112. This part carries Active product status, ensuring long-term availability and manufacturing support. It is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. The part meets all electrical specifications of the original component with improved propagation delay (10ns vs. 11ns) and extended operating temperature range (-55°C to 125°C). ROHS3 compliance and MSL 1 rating are maintained.

CD74HC75PW (Texas Instruments) - Secondary Selection

CD74HC75PW provides equivalent electrical performance and is available in Tube packaging. Product status is Last Time Buy, indicating limited future availability. This option is suitable for applications where tube packaging is preferred or where inventory consolidation is acceptable.

CD74HC75PWT (Texas Instruments) - Tertiary Selection

CD74HC75PWT offers identical electrical specifications to CD74HC75PW with Tape & Reel packaging. Product status is Last Time Buy. This option is suitable for high-volume automated assembly where TR packaging is required but Active status is not critical.

Package Consideration

All substitute parts use 16-TSSOP packaging (0.173", 4.40mm Width) compared to the original 16-SSOP (0.209", 5.30mm Width). The TSSOP package is mechanically compatible with SSOP footprints in PCB designs, as TSSOP represents a tighter pitch variant of the same package family. PCB layout verification is required to confirm footprint compatibility in existing designs.

Frequently Asked Questions (FAQ)

Q: Can CD74HC75PWR directly replace 74HC75DB,112 in existing designs?

A: Yes. CD74HC75PWR meets all electrical specifications: identical logic type (D-Type Transparent Latch), circuit configuration (2:2), output type (Differential), supply voltage range (2V ~ 6V), and output current ratings (5.2mA). The 10ns propagation delay is faster than the original 11ns specification. PCB footprint compatibility must be confirmed, as the substitute uses 16-TSSOP packaging versus the original 16-SSOP.

Q: What is the difference between CD74HC75PW, CD74HC75PWR, and CD74HC75PWT?

A: These three parts are electrically identical. The differences are in packaging format and product status. CD74HC75PW is supplied in Tube packaging with Last Time Buy status. CD74HC75PWR is supplied in Tape & Reel (TR) packaging with Active status. CD74HC75PWT is supplied in Tape & Reel (TR) packaging with Last Time Buy status. For new designs and long-term production, CD74HC75PWR is preferred due to Active status.

Q: Why do the substitute parts have a lower operating temperature limit of -55°C instead of -40°C?

A: The substitute parts from Texas Instruments specify an extended lower operating temperature limit of -55°C, which is an improvement over the original -40°C specification. This extended range does not affect compatibility; applications designed for -40°C to 125°C operation remain fully compatible.

Q: Are there any compliance or certification differences between the original and substitute parts?

A: No. Both the original 74HC75DB,112 and all substitute parts (CD74HC75PW, CD74HC75PWR, CD74HC75PWT) are ROHS3 Compliant, REACH Unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. ECCN and HTSUS classifications are identical.

Q: What inventory status should I consider when selecting a substitute?

A: CD74HC75PWR carries Active product status, indicating ongoing manufacturing and long-term availability. CD74HC75PW and CD74HC75PWT are Last Time Buy, meaning production will cease and inventory is limited. For new production designs, CD74HC75PWR is the preferred choice. For existing inventory management or short-term requirements, CD74HC75PW or CD74HC75PWT may be acceptable.