CD74HC73MT Equivalent & Substitute Parts

Part Overview

The CD74HC73MT is a dual JK-type flip-flop logic integrated circuit manufactured by Texas Instruments 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 CD74HC73MT is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain functional equivalence while offering improved availability and product status.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD74HC73MT
Manufacturer	Texas Instruments
Type	JK Type Flip-Flop
Number of Elements	2
Number of Bits per Element	1
Output Type	Complementary
Trigger Type	Negative Edge
Clock Frequency	60 MHz
Max Propagation Delay @ 6V, 50pF	28 ns
Voltage Supply Range	2V ~ 6V
Current - Output High/Low	5.2 mA / 5.2 mA
Current - Quiescent (Iq)	4 µA
Input Capacitance	10 pF
Operating Temperature Range	-55°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the CD74HC73MT is determined by strict equivalence across the following critical parameters:

Functional Type: JK-type flip-flop with dual elements, 1 bit per element, complementary outputs, negative edge trigger
Electrical Specifications: Supply voltage range 2V ~ 6V, output current capability 5.2 mA, quiescent current 4 µA, input capacitance 10 pF
Timing Performance: Clock frequency 60 MHz minimum, propagation delay specifications at 6V and 50pF load
Operating Temperature: -55°C ~ 125°C range
Package Compatibility: 14-SOIC surface mount package (0.154", 3.90mm width)
Compliance: ROHS3 compliant, MSL Level 1

Substitute parts are grouped into two categories: parametric equivalents (identical electrical and functional specifications) and manufacturer-recommended alternatives (functionally equivalent with minor specification variations).

Parameter Comparison

Parameter	CD74HC73MT (Main)	CD74HC107M96	CD74HC107MT	CD74HC73M96	74HC73D,653	MC74HC73ADG	MC74HC73ADR2G
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Nexperia USA Inc.	onsemi	onsemi
Product Status	Obsolete	Active	Last Time Buy	Active	Active	Active	Active
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	60 MHz	60 MHz	60 MHz	60 MHz	83 MHz	35 MHz	35 MHz
Max Propagation Delay @ 6V, 50pF	28 ns	29 ns	29 ns	28 ns	27 ns	21 ns	21 ns
Voltage Supply Range	2V ~ 6V	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	5.2 mA / 5.2 mA
Current - Quiescent (Iq)	4 µA	4 µA	4 µA	4 µA	4 µA	4 µA	4 µA
Input Capacitance	10 pF	10 pF	10 pF	10 pF	4.6 pF	10 pF	10 pF
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Packaging Format	Tape & Reel	Tape & Reel	Tape & Reel	Tape & Reel	Tape & Reel	Tube	Tape & Reel
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Parametric Equivalents)

CD74HC73M96 is the direct parametric equivalent to CD74HC73MT, offering identical electrical specifications and timing performance. This part is manufactured by Texas Instruments with active product status and represents the optimal choice for direct replacement in new designs or production continuity.

Secondary Substitutes (Functional Equivalents with Specification Variations)

CD74HC107M96 and CD74HC107MT are functionally equivalent alternatives from Texas Instruments. These parts operate within the same electrical envelope and package format. CD74HC107M96 maintains active status with higher inventory availability. CD74HC107MT carries last-time-buy status, indicating limited future availability.

Manufacturer-Recommended Alternatives

74HC73D,653 (Nexperia USA Inc.) provides functional equivalence with improved timing performance (27 ns propagation delay) and higher clock frequency capability (83 MHz). This part operates within a narrower temperature range (-40°C ~ 125°C) compared to the main part. Input capacitance is reduced to 4.6 pF.

MC74HC73ADG and MC74HC73ADR2G (onsemi) are functionally equivalent alternatives with active product status. Both parts maintain the same electrical specifications and package compatibility. MC74HC73ADR2G is supplied in tape and reel format, while MC74HC73ADG is supplied in tube packaging. Both exhibit lower clock frequency specifications (35 MHz) and improved propagation delay performance (21 ns).

Compliance and Certification

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements. All parts are rated for the full -55°C ~ 125°C operating temperature range except 74HC73D,653, which operates from -40°C ~ 125°C.

Frequently Asked Questions (FAQ)

Q: Can CD74HC73M96 be used as a direct replacement for CD74HC73MT?

A: Yes. CD74HC73M96 is a parametric equivalent with identical electrical specifications, timing performance, and package format. Both parts are manufactured by Texas Instruments and operate within the same functional parameters.

Q: What is the difference between CD74HC107M96 and CD74HC73M96?

A: Both parts are functionally equivalent JK-type flip-flops with identical electrical specifications and timing performance. The primary difference is the base product number designation (74HC107 versus 74HC73). Both are suitable substitutes for the CD74HC73MT.

Q: Are the onsemi parts (MC74HC73ADG and MC74HC73ADR2G) compatible with CD74HC73MT?

A: Yes, both onsemi parts are functionally equivalent. They maintain the same electrical specifications, output current capability, supply voltage range, and package format. The primary differences are lower clock frequency specification (35 MHz versus 60 MHz) and improved propagation delay performance (21 ns versus 28 ns).

Q: What is the difference between MC74HC73ADG and MC74HC73ADR2G?

A: Both parts are electrically identical. The difference is packaging format: MC74HC73ADG is supplied in tube packaging, while MC74HC73ADR2G is supplied in tape and reel format. Select based on your procurement and assembly requirements.

Q: Can 74HC73D,653 from Nexperia be used as a substitute?

A: Yes. 74HC73D,653 is functionally equivalent with improved timing performance and higher clock frequency capability. The operating temperature range is narrower (-40°C ~ 125°C versus -55°C ~ 125°C). Verify that your application does not require operation below -40°C before selecting this part.

Q: Are all substitute parts available in 14-SOIC surface mount packaging?

A: Yes. All substitute parts are available in 14-SOIC (0.154", 3.90mm width) surface mount packaging, ensuring PCB footprint compatibility with the CD74HC73MT.

Q: Do all substitute parts meet RoHS and MSL requirements?

A: Yes. All substitute parts are ROHS3 compliant with MSL Level 1 rating, meeting standard environmental and moisture sensitivity requirements for commercial and industrial applications.

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