74HCT109D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT109D,652 is a dual JK-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc. in a 16-SOIC surface mount package. This component functions as a 2-element JK flip-flop with complementary outputs, designed for positive edge-triggered operation in digital logic applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring this functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HCT109D,652
Manufacturer	Nexperia USA Inc.
Series	74HCT
Type	JK Type Flip-Flop
Number of Elements	2
Number of Bits per Element	1
Output Type	Complementary
Trigger Type	Positive Edge
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply	4.5V ~ 5.5V
Clock Frequency	55 MHz
Operating Temperature	-40°C ~ 125°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 74HCT109D,652 is determined by the following critical parameters:

Logic Function: Dual JK-type flip-flop with complementary outputs and positive edge triggering
Package Compatibility: 16-SOIC (0.154", 3.90mm Width) surface mount package
Electrical Specifications: Supply voltage range 4.5V ~ 5.5V, output current capability 4mA high/low
Series Compatibility: 74HCT logic family
Pin Configuration: Identical pinout within the 16-SOIC package

Substitute parts must maintain functional equivalence across these parameters. The following parts meet these substitution criteria:

CD74HCT109M (Harris Corporation) - Obsolete status, RoHS non-compliant
CD74HCT109M96 (Texas Instruments) - Active status, ROHS3 compliant

Parameter Comparison

Parameter	74HCT109D,652 (Main)	CD74HCT109M (Substitute)	CD74HCT109M96 (Substitute)
Manufacturer	Nexperia USA Inc.	Harris Corporation	Texas Instruments
Series	74HCT	74HCT	74HCT
Type	JK Type	JK Type	JK Type
Number of Elements	2	2	2
Number of Bits per Element	1	1	1
Output Type	Complementary	Complementary	Complementary
Trigger Type	Positive Edge	Positive Edge	Positive Edge
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Output High, Low	4mA, 4mA	4mA, 4mA	4mA, 4mA
Current - Quiescent (Iq)	4 µA	4 µA	4 µA
Clock Frequency	55 MHz	54 MHz	54 MHz
Max Propagation Delay @ V, Max CL	35ns @ 6V, 50pF	40ns @ 4.5V, 50pF	40ns @ 4.5V, 50pF
Operating Temperature	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Product Status	Obsolete	Obsolete	Active
RoHS Status	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Not specified	1 (Unlimited)

Engineering Selection Recommendations

CD74HCT109M96 (Texas Instruments) is the preferred substitute for new designs and ongoing production. This part maintains active product status, ensuring continued availability and manufacturer support. It carries ROHS3 compliance and MSL Level 1 rating, meeting modern environmental and reliability standards. The part is supplied in Tape & Reel packaging, suitable for automated assembly processes.

CD74HCT109M (Harris Corporation) provides functional equivalence but carries obsolete status and RoHS non-compliance. This part is suitable only for legacy system maintenance where RoHS compliance is not a requirement and existing inventory is available.

Both substitute parts operate within the same supply voltage range and deliver equivalent logic functionality. The CD74HCT109M96 offers extended operating temperature range (-55°C to 125°C) compared to the main part (-40°C to 125°C), providing additional thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT109M96 directly replace 74HCT109D,652 in existing designs?

A: Yes. Both parts share identical pinout, package dimensions (16-SOIC), and core logic functionality. The CD74HCT109M96 operates within the same supply voltage range (4.5V ~ 5.5V) and delivers equivalent output current specifications (4mA high/low).

Q: What is the difference between CD74HCT109M and CD74HCT109M96?

A: Both are functionally equivalent JK flip-flops in the 74HCT series. The primary differences are manufacturer (Harris vs. Texas Instruments), product status (Obsolete vs. Active), RoHS compliance (non-compliant vs. ROHS3 compliant), and packaging format (Tube vs. Tape & Reel). The CD74HCT109M96 is recommended for new applications.

Q: Are there any timing differences between the main part and substitutes?

A: The 74HCT109D,652 specifies 35ns maximum propagation delay at 6V with 50pF load. Both substitutes specify 40ns maximum propagation delay at 4.5V with 50pF load. The substitutes operate at lower voltage specification points, resulting in slightly longer propagation delays. Clock frequency is rated at 55 MHz for the main part and 54 MHz for substitutes, representing negligible functional difference for most applications.

Q: Is the CD74HCT109M96 suitable for high-temperature applications?

A: The CD74HCT109M96 operates across -55°C to 125°C, providing a 15°C lower temperature bound compared to the main part (-40°C to 125°C). This extended range supports applications requiring operation in cold environments.

Q: What packaging options are available for substitutes?

A: CD74HCT109M is supplied in Tube packaging. CD74HCT109M96 is supplied in Tape & Reel format, optimized for automated pick-and-place assembly. Both maintain the 16-SOIC package form factor.

Q: Does the CD74HCT109M96 meet RoHS requirements?

A: Yes. The CD74HCT109M96 carries ROHS3 compliance certification. The CD74HCT109M does not meet RoHS standards.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message