74HCT175D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT175D,652 is a D-Type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., designed for digital signal processing and sequential logic applications. This component features a single element with 4-bit configuration, positive edge triggering, and complementary output type. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support, maintenance, and production continuity.

Substiute Parts

74HCT175D,652

Nexperia USA Inc.In Stock: 115174HCT175D,652 Datasheet

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CD74HCT175M

Texas InstrumentsIn Stock: 1961CD74HCT175M Datasheet

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CD74HCT175M96

Texas InstrumentsIn Stock: 1582CD74HCT175M96 Datasheet

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CD74HCT175MT

Texas InstrumentsIn Stock: 1789CD74HCT175MT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HCT175D,652 are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine valid substitution:

Core Compatibility Parameters:

• Series: 74HCT (same logic family)
• Type: D-Type Flip Flop
• Number of Elements: 1
• Number of Bits per Element: 4
• Function: Master Reset
• Output Type: Complementary
• Trigger Type: Positive Edge
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Voltage Supply Range: 4.5V ~ 5.5V
• Max Propagation Delay @ 4.5V, 50pF: 33 ns
• Current Output High/Low: 4mA / 4mA
• Quiescent Current (Iq): 8 µA

All identified substitute parts maintain these critical parameters, ensuring direct functional equivalence and pin-compatible replacement capability.

Parameter Comparison

Engineering Selection Recommendations

CD74HCT175M96 (Texas Instruments) - Recommended Primary Substitute

The CD74HCT175M96 is the optimal substitute for the obsolete 74HCT175D,652. This part maintains active product status, ensuring long-term availability and supply chain stability. It is supplied in Cut Tape (CT) & Digi-Reel® packaging, facilitating both automated assembly and manual component handling. Full ROHS3 compliance and MSL 1 rating confirm environmental and moisture handling compatibility with the original specification.

CD74HCT175M (Texas Instruments) - Secondary Substitute

The CD74HCT175M provides functional equivalence with Last Time Buy status. Supplied in Tube packaging, this variant is suitable for applications where standard reel packaging is not required. ROHS3 compliance and MSL 1 rating maintain regulatory and environmental compatibility.

CD74HCT175MT (Texas Instruments) - Tertiary Substitute

The CD74HCT175MT offers functional equivalence in Tape & Reel (TR) packaging format. Last Time Buy status indicates limited future availability. ROHS3 compliance and MSL 1 rating confirm full compatibility with original specifications.

All three Texas Instruments substitutes provide extended operating temperature range (-55°C ~ 125°C) compared to the original part (-40°C ~ 125°C), offering enhanced performance margin in low-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the CD74HCT175M96 directly replace the 74HCT175D,652 without circuit modification?

A: Yes. The CD74HCT175M96 is pin-compatible and electrically equivalent. Both parts share identical package geometry (16-SOIC, 0.154" width), supply voltage range (4.5V ~ 5.5V), output current specifications (4mA), and propagation delay characteristics (33 ns @ 4.5V, 50pF). Direct substitution is supported without circuit redesign.

Q: What is the significance of the different packaging options (Tube, Cut Tape, Tape & Reel)?

A: Packaging format affects supply chain logistics and assembly process compatibility. Cut Tape (CT) & Digi-Reel® packaging (CD74HCT175M96) is standard for high-volume automated assembly. Tube packaging (CD74HCT175M) suits lower-volume or manual assembly operations. Tape & Reel (TR) packaging (CD74HCT175MT) is optimized for continuous reel-fed assembly equipment. All three formats contain electrically identical components.

Q: Why do the Texas Instruments substitutes specify a lower clock frequency (25 MHz) than the original part (49 MHz)?

A: Clock frequency specification represents the maximum guaranteed operating frequency under specified conditions. The 25 MHz specification for Texas Instruments parts remains well above typical 74HCT175 application requirements. Both the original and substitute parts meet the identical 33 ns propagation delay specification, which is the critical timing parameter for most applications. The lower frequency rating does not indicate reduced performance capability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 74HCT175D,652 and all three identified substitutes (CD74HCT175M, CD74HCT175M96, CD74HCT175MT) are ROHS3 compliant. This ensures compatibility with environmental regulations and procurement requirements across all markets.

Q: What is the difference between Last Time Buy and Active product status?

A: Active status (CD74HCT175M96) indicates ongoing production and indefinite availability. Last Time Buy status (CD74HCT175M, CD74HCT175MT) indicates the manufacturer will cease production after a specified date, with limited future supply. For new designs or long-term production requirements, the Active status part (CD74HCT175M96) is preferred.

Q: Is the extended operating temperature range (-55°C ~ 125°C) of the substitutes a compatibility concern?

A: No. Extended temperature range represents an enhancement, not a limitation. If the original design operates within -40°C ~ 125°C, the substitute parts with -55°C ~ 125°C range provide additional margin and are fully compatible.