74HC564D,652 Equivalent & Substitute Parts

Part Overview

The 74HC564D,652 is a D-Type flip-flop logic integrated circuit manufactured by NXP USA Inc., featuring 1 element with 8-bit positive edge triggering and tri-state inverted outputs. This component operates across a 2V to 6V supply range with a maximum propagation delay of 28ns at 6V with 50pF load. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74HC564D,652

NXP USA Inc.In Stock: 109774HC564D,652 Datasheet

Current PartRFQ

CD74HC564M

Texas InstrumentsIn Stock: 1446CD74HC564M Datasheet

DirectRFQ

SN74HC574DW

Texas InstrumentsIn Stock: 3565SN74HC574DW Datasheet

DirectRFQ

CD74HC564M96

Texas InstrumentsIn Stock: 1297CD74HC564M96 Datasheet

UpgradeRFQ

CD74AC534M96

Harris CorporationIn Stock: 38581CD74AC534M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC564D,652 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Package type: 20-SOIC (0.295", 7.50mm Width)
• Mounting type: Surface Mount
• Function: D-Type flip-flop with 1 element, 8-bit configuration
• Trigger type: Positive Edge
• Output type: Tri-State, Inverted
• Voltage supply range: Must encompass or be compatible with 2V ~ 6V
• Current output capability: 7.8mA minimum for both high and low states

Substitute Categories:

Direct Substitutes (Functionally Equivalent): Parts that maintain identical output polarity (inverted), matching electrical performance within the 74HC logic family, and compatible operating temperature ranges.

Functional Alternatives (Different Output Polarity): Parts with non-inverted outputs that may require circuit-level design adjustments but maintain core D-Type flip-flop functionality and package compatibility.

Upgraded Variants (Enhanced Performance): Parts with improved specifications such as extended temperature ranges or enhanced packaging options while maintaining core functionality.

Manufacturer-Recommended Alternatives (Different Logic Family): Parts from alternative logic families (74AC series) offering superior performance characteristics but requiring verification of voltage supply compatibility and timing requirements.

Parameter Comparison

Engineering Selection Recommendations

CD74HC564M (Direct Substitute - Recommended for Most Applications)

The CD74HC564M from Texas Instruments is the primary direct substitute for the 74HC564D,652. Both parts maintain identical output polarity (inverted), matching 20-SOIC package specifications, and equivalent electrical performance within the 74HC logic family. The CD74HC564M is currently in active production status, ensuring long-term availability. Extended operating temperature range (-55°C to 125°C versus -40°C to 125°C) provides additional thermal margin. ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) match the original part specifications. Propagation delay and output current characteristics are identical at the specified test conditions.

CD74HC564M96 (Upgrade Variant - Enhanced Packaging)

The CD74HC564M96 offers identical electrical and functional characteristics to the CD74HC564M but is supplied in Tape & Reel (TR) packaging instead of tube format. This variant is suitable for high-volume production environments requiring automated component handling. Active product status and extended temperature range (-55°C to 125°C) provide equivalent or superior performance characteristics. Selection of this variant depends on production volume requirements and assembly process capabilities.

SN74HC574DW (Functional Alternative - Output Polarity Consideration)

The SN74HC574DW provides D-Type flip-flop functionality in the identical 20-SOIC package but features non-inverted outputs rather than inverted outputs. This part is functionally compatible only in applications where output polarity inversion is not a circuit requirement or where external inversion logic is implemented. The part is listed as discontinued at DiGi Electronics, limiting long-term availability. Operating temperature range is restricted to -40°C to 85°C, which may not satisfy extended temperature applications. Propagation delay is longer (46ns at 6V, 150pF) compared to the main part specification.

CD74AC534M96 (Manufacturer-Recommended Alternative - Performance Enhancement)

The CD74AC534M96 from Harris Corporation represents a manufacturer-recommended alternative from the 74AC logic family. This part offers superior propagation delay performance (11.3ns at 5V, 50pF) and increased output current capability (24mA versus 7.8mA). The 74AC series operates across a narrower voltage supply range (1.5V to 5.5V), which is compatible with the 2V to 6V specification of the original part within the 2V to 5.5V overlap region. The part is listed as obsolete and carries RoHS non-compliance status, which may restrict use in applications with regulatory compliance requirements. Selection of this variant is appropriate only for applications requiring enhanced speed performance and where RoHS compliance is not mandated.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC564M be used as a direct replacement for the 74HC564D,652 without circuit modifications?

A: Yes. The CD74HC564M maintains identical output polarity (inverted), matching package specifications (20-SOIC), equivalent propagation delay (28ns at 6V, 50pF), and compatible voltage supply range (2V to 6V). The extended operating temperature range (-55°C to 125°C) provides additional thermal margin. No circuit modifications are required for functional equivalence.

Q: What is the key difference between the CD74HC564M and the SN74HC574DW?

A: The primary difference is output polarity. The CD74HC564M provides inverted outputs, matching the original 74HC564D,652 specification. The SN74HC574DW provides non-inverted outputs, requiring circuit-level design adjustments if output inversion is required by the application. Additionally, the SN74HC574DW has a longer propagation delay (46ns) and restricted operating temperature range (-40°C to 85°C).

Q: Is the CD74AC534M96 suitable for all applications requiring the 74HC564D,652?

A: The CD74AC534M96 is suitable only for applications where enhanced speed performance (11.3ns propagation delay) and increased output current (24mA) are beneficial and where the narrower voltage supply range (1.5V to 5.5V) is compatible with system requirements. The part's RoHS non-compliance status may restrict use in regulated applications. The 74HC series alternatives (CD74HC564M or CD74HC564M96) are recommended for general-purpose substitution.

Q: What packaging options are available for the 74HC564 logic family?

A: The 74HC564 is available in multiple packaging formats: tube packaging (CD74HC564M) for standard applications and Tape & Reel (TR) packaging (CD74HC564M96) for high-volume automated assembly. Both variants maintain identical electrical specifications and 20-SOIC package dimensions. Selection depends on production volume and assembly process requirements.

Q: Are all substitute parts RoHS3 compliant?

A: The CD74HC564M, SN74HC574DW, and CD74HC564M96 are all ROHS3 compliant, matching the original 74HC564D,652 specification. The CD74AC534M96 is RoHS non-compliant and should not be used in applications with mandatory RoHS compliance requirements.

Q: What is the moisture sensitivity level (MSL) for substitute parts?

A: The CD74HC564M, CD74HC564M96, and SN74HC574DW all carry MSL 1 (Unlimited) rating, identical to the original 74HC564D,652. The CD74AC534M96 specification does not include MSL data in the provided parameters. MSL 1 indicates no moisture sensitivity restrictions for storage or handling.

Q: Can the 74HC564D,652 be used in applications requiring operating temperatures below -40°C?

A: No. The 74HC564D,652 operating temperature range is -40°C to 125°C. For applications requiring extended low-temperature operation, the CD74HC564M or CD74HC564M96 (both rated -55°C to 125°C) are suitable alternatives, providing an additional 15°C of low-temperature margin.