74HC73D,653 Equivalent & Substitute Parts

Part Overview

The 74HC73D,653 is a dual JK-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc. in a 14-SOIC surface mount package. This component functions as a reset-capable, negative edge-triggered flip-flop with complementary outputs, operating across a 2V to 6V supply voltage range. The part is currently active in production with 3,058 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when specific manufacturing qualifications are required (such as AEC-Q100 automotive grade), or when alternative packaging formats better suit production requirements.

Key Parameters

Parameter	Value
Part Number	74HC73D,653
Manufacturer	Nexperia USA Inc.
Category	Logic
Type	JK Type Flip-Flop
Number of Elements	2
Number of Bits per Element	1
Output Type	Complementary
Trigger Type	Negative Edge
Clock Frequency	83 MHz
Max Propagation Delay @ 6V, 50pF	27 ns
Voltage Supply Range	2V to 6V
Current Output High/Low	5.2 mA / 5.2 mA
Quiescent Current (Iq)	4 µA
Input Capacitance	4.6 pF
Operating Temperature	-40°C to 125°C
Package	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Packaging Format	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC73D,653 is determined by the following core parameters:

Mandatory Matching Parameters:

JK-type flip-flop configuration with 2 elements, 1 bit per element
Complementary output type
Negative edge trigger mechanism
14-SOIC (0.154", 3.90mm Width) package
Surface mount mounting type
2V to 6V supply voltage compatibility
RoHS3 compliance

Allowable Variation Parameters:

Clock frequency (minimum 35 MHz acceptable; 74HC73D,653 specifies 83 MHz)
Maximum propagation delay (up to 28 ns acceptable; 74HC73D,653 specifies 27 ns)
Input capacitance (up to 10 pF acceptable; 74HC73D,653 specifies 4.6 pF)
Operating temperature range (extended ranges acceptable; -55°C to 125°C acceptable)
Packaging format (Tube or Tape & Reel both acceptable)
Product status (Active or Discontinued acceptable; Obsolete parts listed for reference only)
Manufacturer qualification grades (standard or AEC-Q100 automotive grade acceptable)

Substitute parts must maintain electrical and mechanical compatibility within these parameters to ensure direct replacement capability in circuit applications.

Parameter Comparison

Parameter	74HC73D,653	74HC73D-Q100J	CD74HC73M	CD74HC73M96	CD74HC73MT	MC74HC73ADG	MC74HC73ADR2G
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Texas Instruments	Texas Instruments	Texas Instruments	onsemi	onsemi
Type	JK Type	JK Type	JK Type	JK Type	JK Type	JK Type	JK Type
Number of Elements	2	2	2	2	2	2	2
Output Type	Complementary	Complementary	Complementary	Complementary	Complementary	Complementary	Complementary
Trigger Type	Negative Edge	Negative Edge	Negative Edge	Negative Edge	Negative Edge	Negative Edge	Negative Edge
Clock Frequency	83 MHz	83 MHz	60 MHz	60 MHz	60 MHz	35 MHz	35 MHz
Max Propagation Delay @ 6V, 50pF	27 ns	27 ns	28 ns	28 ns	28 ns	21 ns	21 ns
Voltage Supply Range	2V to 6V	2V to 6V	2V to 6V	2V to 6V	2V to 6V	2V to 6V	2V to 6V
Current Output High/Low	5.2 mA / 5.2 mA	5.2 mA / 5.2 mA	5.2 mA / 5.2 mA	5.2 mA / 5.2 mA	5.2 mA / 5.2 mA	5.2 mA / 5.2 mA	5.2 mA / 5.2 mA
Quiescent Current (Iq)	4 µA	4 µA	4 µA	4 µA	4 µA	4 µA	4 µA
Input Capacitance	4.6 pF	4.6 pF	10 pF	10 pF	10 pF	10 pF	10 pF
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Package	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Packaging Format	Tape & Reel	Tape & Reel	Tube	Tape & Reel	Tape & Reel	Tube	Tape & Reel
Product Status	Active	Active	Discontinued	Active	Obsolete	Active	Active
Qualification	Standard	AEC-Q100	Standard	Standard	Standard	Standard	Standard
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	3,058 Pcs	10,848 Pcs	2,100 Pcs	25,300 Pcs	1,124 Pcs	4,966 Pcs	10,200 Pcs

Engineering Selection Recommendations

Primary Substitute (Parametric Equivalent): The 74HC73D-Q100J is the direct parametric equivalent to the 74HC73D,653. Both parts are manufactured by Nexperia USA Inc., share identical electrical specifications (83 MHz clock frequency, 27 ns propagation delay, 4.6 pF input capacitance), and are packaged in 14-SOIC format with Tape & Reel delivery. The 74HC73D-Q100J carries AEC-Q100 automotive qualification, making it suitable for applications requiring automotive-grade components. Both parts are active in production with substantial inventory availability.

Secondary Substitutes (Similar Compatibility): The CD74HC73M96 (Texas Instruments, Tape & Reel, Active) and MC74HC73ADR2G (onsemi, Tape & Reel, Active) are functionally compatible substitutes. These parts operate within the allowable parameter variations: clock frequency of 60 MHz and 35 MHz respectively (both exceed minimum requirements), propagation delays of 28 ns and 21 ns respectively (both within acceptable range), and extended operating temperature ranges of -55°C to 125°C. Both maintain 14-SOIC packaging and RoHS3 compliance.

Alternative Packaging Options: The MC74HC73ADG (onsemi, Tube packaging, Active) and CD74HC73M (Texas Instruments, Tube packaging, Discontinued) provide equivalent electrical functionality in tube format for applications where bulk reel packaging is not required. The CD74HC73M is discontinued at DiGi Electronics and should be considered only when alternative sources are available.

Parts to Avoid: The CD74HC73MT (Texas Instruments, Obsolete status) is not recommended for new designs or production applications due to its obsolete classification, despite technical compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use the 74HC73D-Q100J as a direct replacement for the 74HC73D,653? A: Yes. Both parts are manufactured by Nexperia USA Inc., share identical electrical specifications, and are packaged in 14-SOIC format with Tape & Reel delivery. The 74HC73D-Q100J includes AEC-Q100 automotive qualification, which the standard 74HC73D,653 does not carry.

Q: What is the difference between the CD74HC73M96 and CD74HC73M? A: Both are Texas Instruments JK-type flip-flops with identical electrical specifications. The primary difference is packaging format: CD74HC73M96 is supplied in Tape & Reel (Active status), while CD74HC73M is supplied in Tube format (Discontinued status). The CD74HC73M96 is the recommended choice for active production.

Q: Are the onsemi parts (MC74HC73ADG and MC74HC73ADR2G) compatible with the 74HC73D,653? A: Yes, both onsemi parts are functionally compatible. They maintain the same JK-type configuration, complementary output, negative edge trigger, 14-SOIC package, and 2V to 6V supply voltage range. The onsemi parts specify lower clock frequencies (35 MHz versus 83 MHz) and faster propagation delays (21 ns versus 27 ns), both of which are acceptable variations. The MC74HC73ADR2G is supplied in Tape & Reel format; the MC74HC73ADG is supplied in Tube format.

Q: What does the input capacitance difference (4.6 pF versus 10 pF) mean for substitution? A: Input capacitance affects circuit loading characteristics. The 74HC73D,653 specifies 4.6 pF, while substitute parts from Texas Instruments and onsemi specify 10 pF. This difference is within acceptable substitution parameters and does not prevent direct replacement in standard logic applications. Applications with extremely tight timing or high-frequency signal integrity requirements should verify performance with the higher input capacitance value.

Q: Can I use tube-packaged parts (MC74HC73ADG, CD74HC73M) in automated assembly? A: Tube packaging is suitable for manual assembly or lower-volume production. For high-volume automated assembly, Tape & Reel format is standard. The 74HC73D-Q100J, CD74HC73M96, and MC74HC73ADR2G are all available in Tape & Reel format and are recommended for automated production environments.

Q: Why is the CD74HC73MT listed if it is obsolete? A: The CD74HC73MT is included for reference purposes only. It demonstrates historical availability and technical compatibility but is not recommended for new designs or production applications due to its obsolete status. Use active-status alternatives instead.

Q: Does the extended operating temperature range (-55°C to 125°C) of substitute parts affect compatibility? A: No. An extended operating temperature range is a superset of the original specification (-40°C to 125°C) and does not reduce compatibility. Parts with extended ranges are suitable for applications requiring broader temperature operation and are fully compatible with designs specified for the narrower range.

Q: What is the significance of RoHS3 compliance for all listed parts? A: All parts listed are RoHS3 compliant, confirming they meet Restriction of Hazardous Substances regulations. This ensures compatibility with environmental and regulatory requirements across all substitute options.

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