CD74HC174MT Equivalent & Substitute Parts

Part Overview

The CD74HC174MT is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 6 bits per element in a 16-SOIC surface mount package. This component functions as a master reset flip-flop with positive edge triggering and non-inverted outputs. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

CD74HC174MT

Texas InstrumentsIn Stock: 1135CD74HC174MT Datasheet

Current PartRFQ

CD74HC174M96

Harris CorporationIn Stock: 5135CD74HC174M96 Datasheet

DirectRFQ

MC74HC174ADR2G

onsemiIn Stock: 10317MC74HC174ADR2G Datasheet

DirectRFQ

74HC174D,653

NXP SemiconductorsIn Stock: 3507774HC174D,653 Datasheet

MFR RecommendedRFQ

74HC174D-Q100J

Nexperia USA Inc.In Stock: 110574HC174D-Q100J Datasheet

MFR RecommendedRFQ

MC74HC174ADG

onsemiIn Stock: 1164MC74HC174ADG Datasheet

MFR RecommendedRFQ

NLV74HC174ADR2G

onsemiIn Stock: 3410NLV74HC174ADR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD74HC174MT is determined by strict equivalence across the following critical parameters:

• Base product number: 74HC174
• Package type: 16-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Function: D-Type flip-flop with master reset
• Number of elements: 1
• Number of bits per element: 6
• Trigger type: Positive edge
• Output type: Non-inverted
• Voltage supply range: 2V ~ 6V
• Operating temperature range: -55°C ~ 125°C or -40°C ~ 125°C

Substitute parts must maintain electrical compatibility within these parameters. Variations in propagation delay, quiescent current, input capacitance, and clock frequency are acceptable provided they do not exceed the specified ranges for the application.

Parameter Comparison

Engineering Selection Recommendations

For new designs and ongoing procurement, MC74HC174ADR2G (onsemi) and 74HC174D-Q100J (Nexperia) are the preferred substitutes due to active product status and ROHS3 compliance. MC74HC174ADR2G offers improved propagation delay performance (19ns) and lower quiescent current (4 µA) while maintaining full electrical compatibility. 74HC174D-Q100J provides automotive-grade qualification (AEC-Q100) for applications requiring automotive reliability standards.

For applications with extended temperature requirements (-55°C to 125°C), MC74HC174ADR2G, MC74HC174ADG, and NLV74HC174ADR2G maintain the full temperature range. NXP's 74HC174D,653 offers higher clock frequency capability (107 MHz) and lower input capacitance (4.6 pF) for timing-critical applications, though it operates within a narrower temperature range (-40°C to 125°C).

CD74HC174M96 (Harris) and MC74HC174ADG (onsemi) are obsolete alternatives and should be considered only when active parts are unavailable. CD74HC174M96 is not RoHS compliant, which may restrict use in regulated applications.

Frequently Asked Questions (FAQ)

Q: Can MC74HC174ADR2G directly replace CD74HC174MT in existing designs?

A: Yes. Both parts share identical package geometry (16-SOIC), mounting type (surface mount), and core electrical specifications (voltage supply, output current, trigger type). MC74HC174ADR2G is pin-compatible and functionally equivalent. The improved propagation delay (19ns vs 28ns) and lower quiescent current (4 µA vs 8 µA) represent performance enhancements with no negative impact on existing circuit operation.

Q: What is the difference between 74HC174D,653 and 74HC174D-Q100J?

A: Both parts are manufactured to the 74HC174 specification with identical core electrical parameters. The primary difference is that 74HC174D-Q100J carries AEC-Q100 automotive qualification and operates within a narrower temperature range (-40°C to 125°C vs -55°C to 125°C). 74HC174D,653 offers higher clock frequency (107 MHz) and lower input capacitance (4.6 pF). Select 74HC174D-Q100J for automotive applications; select 74HC174D,653 for general industrial use requiring higher frequency performance.

Q: Is the CD74HC174M96 (Harris) suitable for new designs?

A: No. CD74HC174M96 is obsolete and not RoHS compliant. It should be used only as a last-resort substitute when active alternatives are unavailable. For new designs, select from active parts: MC74HC174ADR2G, 74HC174D,653, or 74HC174D-Q100J.

Q: What is the significance of the operating temperature range difference?

A: CD74HC174MT, MC74HC174ADR2G, MC74HC174ADG, and NLV74HC174ADR2G operate from -55°C to 125°C. NXP's 74HC174D,653 and Nexperia's 74HC174D-Q100J operate from -40°C to 125°C. For applications requiring operation below -40°C, select parts with the extended -55°C lower limit. For standard industrial and automotive applications, the -40°C to 125°C range is sufficient.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts are available in 16-SOIC surface mount packages. Packaging options (bulk, tape & reel) vary by manufacturer and supplier. MC74HC174ADR2G and 74HC174D-Q100J are supplied in tape & reel format. Verify packaging availability with your component supplier for procurement requirements.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. For applications subject to environmental regulations or customer requirements, select ROHS3-compliant parts: MC74HC174ADR2G, 74HC174D-Q100J, MC74HC174ADG, or NLV74HC174ADR2G. CD74HC174M96 is not RoHS compliant and should be avoided in regulated applications.