74HC73D,652 Equivalent & Substitute Parts

Part Overview

The 74HC73D,652 is a dual JK-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc. in 14-SOIC surface mount packaging. This device 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 classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HC73D,652
Manufacturer	Nexperia USA Inc.
Base Product Number	74HC73
Category	Logic
Type	JK Type Flip-Flop
Number of Elements	2
Number of Bits per Element	1
Output Type	Complementary
Trigger Type	Negative Edge
Function	Reset
Clock Frequency	83 MHz
Max Propagation Delay @ 6V, 50pF	27 ns
Voltage - Supply	2V ~ 6V
Current - Output High, Low	5.2 mA, 5.2 mA
Current - Quiescent (Iq)	4 µA
Input Capacitance	4.6 pF
Operating Temperature	-40°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC73D,652 is determined by the following critical parameters:

Base product number: 74HC73
Package type: 14-SOIC (0.154", 3.90mm Width)
Functional characteristics: Dual JK-type flip-flop, negative edge-triggered, complementary outputs, reset function
Electrical compatibility: 2V ~ 6V supply voltage, surface mount mounting type
Compliance: ROHS3 compliant, MSL 1

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in clock frequency, propagation delay, input capacitance, and operating temperature range are permitted within the 74HC73 product family, as these parameters do not affect functional interchangeability in standard applications.

Parameter Comparison

Parameter	74HC73D,652 (Nexperia)	CD74HC73M (TI)	CD74HC73M96 (TI)	CD74HC73MT (TI)	MC74HC73ADG (onsemi)	MC74HC73ADR2G (onsemi)
Manufacturer	Nexperia USA Inc.	Texas Instruments	Texas Instruments	Texas Instruments	onsemi	onsemi
Type	JK Type	JK Type	JK Type	JK Type	JK Type	JK Type
Number of Elements	2	2	2	2	2	2
Number of Bits per Element	1	1	1	1	1	1
Output Type	Complementary	Complementary	Complementary	Complementary	Complementary	Complementary
Trigger Type	Negative Edge	Negative Edge	Negative Edge	Negative Edge	Negative Edge	Negative Edge
Function	Reset	Reset	Reset	Reset	Reset	Reset
Clock Frequency	83 MHz	60 MHz	60 MHz	60 MHz	35 MHz	35 MHz
Max Propagation Delay @ 6V, 50pF	27 ns	28 ns	28 ns	28 ns	21 ns	21 ns
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 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
Current - Quiescent (Iq)	4 µA	4 µA	4 µA	4 µA	4 µA	4 µA
Input Capacitance	4.6 pF	10 pF	10 pF	10 pF	10 pF	10 pF
Operating Temperature	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Discontinued at DiGi Electronics	Active	Obsolete	Active	Active
Packaging	Not specified	Tube	Tape & Reel (TR)	Tape & Reel (TR)	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

For replacement of the obsolete 74HC73D,652, the following selection criteria apply:

Primary Recommendation: CD74HC73M96 (Texas Instruments)

CD74HC73M96 is the preferred substitute. It maintains full electrical and functional compatibility with the original part while offering active product status and availability in Tape & Reel packaging suitable for high-volume production. This part is ROHS3 compliant with MSL 1 rating.

Secondary Recommendations:

MC74HC73ADR2G (onsemi) and MC74HC73ADG (onsemi) are active alternatives with identical functional specifications. Both are ROHS3 compliant with MSL 1 rating. The ADR2G variant is supplied in Tape & Reel packaging, while the ADG variant is supplied in Tube packaging.

Discontinued Alternatives:

CD74HC73M (Texas Instruments) and CD74HC73MT (Texas Instruments) are functionally equivalent but carry discontinued or obsolete status. These should be considered only when CD74HC73M96 is unavailable.

All substitute parts meet the core electrical requirements: 2V ~ 6V supply voltage operation, negative edge-triggered JK-type flip-flop function with reset capability, complementary outputs, and 14-SOIC surface mount packaging. Selection should prioritize parts with active product status for long-term design support.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74HC73D,652 with CD74HC73M96 without circuit modifications?

A: Yes. CD74HC73M96 is functionally and electrically equivalent. Both devices operate on 2V ~ 6V supply voltage, feature identical JK-type flip-flop architecture with negative edge triggering and reset function, and use the same 14-SOIC package. No circuit modifications are required.

Q: What is the difference between the Texas Instruments CD74HC73M variants (M, M96, MT)?

A: The variants differ in packaging and product status. CD74HC73M is supplied in Tube packaging and is discontinued at DiGi Electronics. CD74HC73M96 is supplied in Tape & Reel (TR) packaging and maintains active status. CD74HC73MT is supplied in Tape & Reel packaging but is obsolete. All three are electrically identical.

Q: Why do the onsemi parts (MC74HC73ADG and MC74HC73ADR2G) show lower clock frequency (35 MHz) compared to the original (83 MHz)?

A: Clock frequency specifications vary by manufacturer but do not affect functional interchangeability. The onsemi parts operate within the same 2V ~ 6V supply range and meet the same reset and complementary output requirements. Lower clock frequency ratings do not prevent use in applications designed for the original part.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original 74HC73D,652 specifications.

Q: Which substitute part should I choose for new designs?

A: CD74HC73M96 is recommended for new designs. It offers active product status, Tape & Reel packaging suitable for automated assembly, and full compatibility with the 74HC73 functional specification. MC74HC73ADR2G (onsemi) is an alternative with identical active status and TR packaging availability.

Q: Can I use these substitutes interchangeably in the same circuit board?

A: Yes. All substitute parts share identical pin configurations, package dimensions (14-SOIC, 0.154" width), and electrical operating parameters (supply voltage, output current, quiescent current). They are mechanically and electrically interchangeable.

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