CD74HCT574M Equivalent & Substitute Parts

Part Overview

The CD74HCT574M is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, designed for 8-bit data storage and transfer applications. This device features tri-state, non-inverted outputs and operates across a 4.5V to 5.5V supply range with a maximum propagation delay of 33ns at 4.5V with 50pF load. The part is currently in Last Time Buy status, indicating limited availability from the original manufacturer. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this functional specification.

Substiute Parts

CD74HCT574M

Texas InstrumentsIn Stock: 2119CD74HCT574M Datasheet

Current PartRFQ

CD74HCT574M96

Harris CorporationIn Stock: 10419CD74HCT574M96 Datasheet

MFR RecommendedRFQ

CD74HCT374M

Harris CorporationIn Stock: 1817CD74HCT374M Datasheet

Parametric EquivalentRFQ

74HCT574D,653

Nexperia USA Inc.In Stock: 960174HCT574D,653 Datasheet

MFR RecommendedRFQ

74HCT574D-Q100,118

Nexperia USA Inc.In Stock: 77074HCT574D-Q100,118 Datasheet

MFR RecommendedRFQ

MC74HCT574ADWR2G

onsemiIn Stock: 5305MC74HCT574ADWR2G Datasheet

MFR RecommendedRFQ

MM74HCT574WM

onsemiIn Stock: 2198MM74HCT574WM Datasheet

MFR RecommendedRFQ

MM74HCT574WMX

onsemiIn Stock: 2681MM74HCT574WMX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HCT574M is determined by the following critical parameters:

• Functional Type: D-Type flip-flop with 1 element, 8-bit configuration
• Output Configuration: Tri-state, non-inverted outputs
• Package: 20-SOIC form factor (0.295", 7.50mm Width)
• Voltage Supply Range: 4.5V ~ 5.5V compatibility
• Trigger Type: Positive edge triggering
• Output Current Capability: Minimum 6mA per output (high and low)
• Propagation Delay: Maximum 33ns at specified conditions
• Temperature Range: Minimum -55°C ~ 125°C operating window

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts meeting all critical electrical and mechanical parameters with identical or superior performance characteristics within the specified operating conditions.

Manufacturer Recommended Substitutes: Parts designated by manufacturers as direct functional replacements, with minor variations in secondary parameters such as quiescent current, input capacitance, or clock frequency that do not affect primary application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes for Active Production

For new designs and ongoing production requiring ROHS3 compliance and active product status, the following parts are recommended:

74HCT574D,653 (Nexperia USA Inc.) and 74HCT574D-Q100,118 (Nexperia USA Inc., AEC-Q100 qualified) are the preferred substitutes. Both maintain full parametric compatibility with the CD74HCT574M across all critical electrical specifications. The 74HCT574D-Q100,118 variant includes automotive-grade qualification (AEC-Q100) for applications requiring enhanced reliability standards. Both parts are available in active production status with ROHS3 compliance.

MC74HCT574ADWR2G (onsemi) provides an alternative from an established manufacturer with active product status and ROHS3 compliance. This part features reduced quiescent current (4 µA versus 8 µA), which may provide power consumption benefits in battery-operated or low-power applications. The propagation delay specification (30ns @ 5V, 50pF) is superior to the main part.

MM74HCT574WM and MM74HCT574WMX (onsemi) are functionally equivalent alternatives with active status and ROHS3 compliance. These parts feature enhanced output current capability (7.2mA versus 6mA), beneficial for driving higher-impedance loads. Operating temperature range is limited to -40°C ~ 85°C, which restricts use in extended temperature applications.

Obsolete Part Considerations

CD74HCT574M96 (Harris Corporation) and CD74HCT374M (Harris Corporation) are obsolete products with RoHS non-compliance. These parts should not be selected for new designs or long-term production commitments.

Temperature Range Constraints

Applications requiring the full -55°C ~ 125°C operating range must select from: CD74HCT574M (main part), CD74HCT574M96, CD74HCT374M, or MC74HCT574ADWR2G. The Nexperia parts (74HCT574D,653 and 74HCT574D-Q100,118) and onsemi MM74HCT574 variants operate only to -40°C minimum, unsuitable for extended low-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the CD74HCT574M with any of the listed alternatives in my existing design?

A: Substitution depends on your specific application requirements. All listed parts share the same functional type (D-Type flip-flop, 8-bit, tri-state output) and 20-SOIC package. However, verify your design's requirements for operating temperature range, quiescent current, and output current capability. Parts with -40°C ~ 85°C temperature range (MM74HCT574WM, MM74HCT574WMX) are not suitable for applications requiring -55°C operation.

Q: What is the difference between the Nexperia 74HCT574D,653 and 74HCT574D-Q100,118?

A: Both parts are functionally identical with identical electrical specifications. The 74HCT574D-Q100,118 includes AEC-Q100 automotive qualification, required for automotive and high-reliability applications. The 74HCT574D,653 is the standard industrial-grade version. Both are in active production with ROHS3 compliance.

Q: Why does the CD74HCT574M96 show better propagation delay (15ns) than the main part (33ns)?

A: The CD74HCT574M96 propagation delay is specified at different test conditions (15ns @ 5V, 15pF load) compared to the main part (33ns @ 4.5V, 50pF load). Propagation delay varies with supply voltage and load capacitance. The CD74HCT574M96 is obsolete and RoHS non-compliant, making it unsuitable for new designs.

Q: Which substitute offers the lowest power consumption?

A: The MC74HCT574ADWR2G features the lowest quiescent current at 4 µA, compared to 8 µA for most alternatives. This part is suitable for power-sensitive applications while maintaining full parametric compatibility and active product status with ROHS3 compliance.

Q: Are the packaging format differences (Tube, Bulk, Tape & Reel) important for my selection?

A: Packaging format affects procurement and assembly processes but does not impact electrical performance. Tube packaging is suitable for manual assembly or small-volume production. Tape & Reel format is standard for automated assembly lines. Bulk packaging is typically used for high-volume orders. Select based on your manufacturing process requirements.

Q: Can I use MM74HCT574WM or MM74HCT574WMX in applications requiring -55°C operation?

A: No. Both onsemi MM74HCT574 variants operate only to -40°C minimum temperature. For applications requiring -55°C operation, select from: CD74HCT574M (main part, Last Time Buy status), 74HCT574D,653, 74HCT574D-Q100,118, or MC74HCT574ADWR2G.

Q: Is RoHS compliance important for my application?

A: ROHS3 compliance is mandatory for products sold in the European Union and increasingly required by major OEMs globally. All active substitute parts listed (74HCT574D,653, 74HCT574D-Q100,118, MC74HCT574ADWR2G, MM74HCT574WM, MM74HCT574WMX) are ROHS3 compliant. Obsolete parts (CD74HCT574M96, CD74HCT374M) are RoHS non-compliant and unsuitable for new designs.