CD74HCT174MT Equivalent & Substitute Parts

Part Overview

The CD74HCT174MT is a D-type flip-flop logic integrated circuit manufactured by Texas Instruments, designed for digital signal processing and sequential logic applications. This 6-bit positive edge-triggered flip-flop operates within the 74HCT logic family standard and is housed in a 16-SOIC surface mount package. The part is currently in Last Time Buy status, making identification of equivalent and substitute components essential for ongoing design support and procurement planning.

Substiute Parts

CD74HCT174MT

Texas InstrumentsIn Stock: 1234CD74HCT174MT Datasheet

Current PartRFQ

CD74HCT174M96

Texas InstrumentsIn Stock: 2711CD74HCT174M96 Datasheet

Parametric EquivalentRFQ

74HCT174D,653

NXP SemiconductorsIn Stock: 984074HCT174D,653 Datasheet

MFR RecommendedRFQ

74HCT174D-Q100J

Nexperia USA Inc.In Stock: 106174HCT174D-Q100J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HCT174MT is determined by strict equivalence across the following critical parameters:

Functional Equivalence Criteria:

• Base product number (74HCT174)
• Logic family (74HCT)
• D-type flip-flop configuration with 6-bit architecture
• Positive edge trigger operation
• Master reset function
• Non-inverted output type

Electrical Equivalence Criteria:

• Supply voltage range: 4.5V – 5.5V
• Output current capability: 4 mA minimum (high and low)
• Quiescent current: 8 µA maximum
• Operating temperature range: minimum -55°C to 125°C or better
• Package type: 16-SOIC surface mount

Mechanical Equivalence Criteria:

• 16-SOIC (0.154", 3.90mm Width) package footprint
• Surface mount configuration
• Moisture sensitivity level 1 or equivalent

Substitute parts meeting all three equivalence categories are classified as direct replacements. Parts with enhanced specifications (higher clock frequency, lower propagation delay, improved temperature range) remain functionally compatible while offering performance advantages.

Parameter Comparison

Engineering Selection Recommendations

CD74HCT174M96 (Texas Instruments)

This parametric equivalent maintains identical electrical and thermal specifications to the CD74HCT174MT while offering active product status. The part is supplied in Cut Tape and Digi-Reel packaging formats, providing flexibility for both automated and manual assembly operations. ROHS3 compliance and unlimited moisture sensitivity rating align with the original part's environmental qualifications. Selection of this substitute ensures continuity within the Texas Instruments 74HCT174 product line.

74HCT174D,653 (NXP Semiconductors)

This manufacturer-recommended substitute from NXP Semiconductors provides enhanced performance specifications, including 69 MHz clock frequency (versus 25 MHz) and 35 ns propagation delay (versus 40 ns). The part maintains full electrical compatibility across supply voltage, output current, and quiescent current parameters. Operating temperature range is -40°C to 125°C, which covers standard industrial applications but does not extend to the -55°C lower limit of the original part. This substitute is suitable for applications where extended low-temperature operation is not required. Bulk packaging format requires consideration for procurement and inventory management.

74HCT174D-Q100J (Nexperia USA Inc.)

This manufacturer-recommended substitute incorporates automotive-grade qualification (AEC-Q100) and is supplied in Tape & Reel packaging. Performance specifications match the NXP part, with 69 MHz clock frequency and 35 ns propagation delay. The automotive qualification provides additional reliability assurance for mission-critical applications. Operating temperature range is -40°C to 125°C. ROHS3 compliance and unlimited moisture sensitivity rating are maintained. This substitute is appropriate for automotive and high-reliability applications where AEC-Q100 qualification is specified or preferred.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT174M96 be used as a direct replacement for CD74HCT174MT?

A: Yes. CD74HCT174M96 is a parametric equivalent with identical electrical specifications, functional configuration, and package type. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and active product status. Both parts are manufactured by Texas Instruments and comply with ROHS3 standards.

Q: What is the difference between the NXP and Nexperia substitutes?

A: Both 74HCT174D,653 (NXP) and 74HCT174D-Q100J (Nexperia) provide identical electrical performance with enhanced specifications (69 MHz clock frequency, 35 ns propagation delay). The primary distinction is that 74HCT174D-Q100J carries AEC-Q100 automotive qualification and is supplied in Tape & Reel format, while 74HCT174D,653 is supplied in bulk packaging. Both operate across -40°C to 125°C temperature range.

Q: Are there any temperature range limitations when substituting with NXP or Nexperia parts?

A: Yes. The NXP and Nexperia substitutes operate from -40°C to 125°C, whereas the original CD74HCT174MT operates from -55°C to 125°C. Applications requiring operation below -40°C must use the original part or CD74HCT174M96, which maintains the -55°C lower limit.

Q: Is the 16-SOIC package footprint identical across all substitute parts?

A: Yes. All substitute parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package. PCB footprints and reflow soldering profiles are compatible across all listed parts.

Q: What packaging formats are available for each substitute?

A: CD74HCT174MT is supplied in Tape & Reel (TR). CD74HCT174M96 is available in Cut Tape (CT) and Digi-Reel® formats. 74HCT174D,653 is supplied in bulk packaging. 74HCT174D-Q100J is supplied in Tape & Reel (TR) format.

Q: Do all substitute parts meet ROHS3 compliance?

A: CD74HCT174M96 and 74HCT174D-Q100J are explicitly ROHS3 compliant. 74HCT174D,653 RoHS status is not specified in the provided data. Verification with the supplier is recommended if ROHS3 compliance is a design requirement.

Q: What is the significance of the Last Time Buy status for CD74HCT174MT?

A: Last Time Buy status indicates that Texas Instruments will discontinue this specific part number. Existing inventory may be available for a limited period. For long-term design support, transition to an active substitute part is recommended. CD74HCT174M96 provides the most direct transition path within the Texas Instruments product line.