CD74ACT109ME4 Equivalent & Substitute Parts

Part Overview

The CD74ACT109ME4 is a dual JK-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This device functions as a 2-element, 1-bit positive edge-triggered flip-flop with complementary outputs and set/reset capability. The main part is currently in Last Time Buy status, making identification of equivalent substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

CD74ACT109ME4

Texas InstrumentsIn Stock: 729CD74ACT109ME4 Datasheet

Current PartRFQ

CD74ACT109M

Harris CorporationIn Stock: 3407CD74ACT109M Datasheet

MFR RecommendedRFQ

CD74ACT109M96

Texas InstrumentsIn Stock: 1633CD74ACT109M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74ACT109ME4 is determined by strict equivalence across the following critical parameters:

Functional Parameters (Must Match Exactly):

• Logic type: JK-type flip-flop
• Number of elements: 2
• Bits per element: 1
• Output configuration: Complementary
• Trigger mechanism: Positive edge
• Clock frequency: 100 MHz
• Propagation delay: 10.3 ns @ 5V, 50pF
• Supply voltage range: 4.5V ~ 5.5V
• Output current capability: 24mA high, 24mA low
• Quiescent current: 4 µA
• Input capacitance: 10 pF
• Operating temperature range: -55°C ~ 125°C

Package Parameters (Must Match Exactly):

• Package type: 16-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount

Substitute parts must maintain identical electrical performance and physical compatibility. Packaging format (Tube vs. Tape & Reel) does not affect functional substitution but may impact procurement and handling procedures.

Parameter Comparison

Engineering Selection Recommendations

CD74ACT109M96 (Texas Instruments, Tape & Reel)

This substitute is the preferred selection for new designs and ongoing procurement. It maintains full electrical and functional equivalence to the CD74ACT109ME4 while offering Active product status, ensuring long-term availability and manufacturing support. The device carries ROHS3 compliance and MSL Level 1 rating, matching the environmental and regulatory profile of the main part. The Tape & Reel packaging format is standard for automated assembly processes and high-volume production environments.

CD74ACT109M (Harris Corporation, Tube)

This substitute provides functional equivalence but carries Obsolete product status and RoHS non-compliance. Selection of this part is appropriate only for legacy system maintenance or applications where RoHS compliance is not a requirement. The Tube packaging format is suitable for manual assembly or low-volume applications.

Frequently Asked Questions (FAQ)

Q: Can CD74ACT109M96 be used as a direct replacement for CD74ACT109ME4?

A: Yes. Both devices are electrically and functionally identical across all critical parameters: JK-type flip-flop configuration, 100 MHz clock frequency, 10.3 ns propagation delay, 4.5V–5.5V supply voltage, and 16-SOIC package. The primary difference is packaging format (Tape & Reel vs. Tube) and product status (Active vs. Last Time Buy).

Q: What is the significance of the packaging format difference (Tube vs. Tape & Reel)?

A: Tube packaging is used for manual handling and lower-volume applications. Tape & Reel packaging is designed for automated pick-and-place assembly equipment and is standard in high-volume manufacturing. Both formats contain identical die and electrical performance. Selection depends on assembly process requirements, not functional compatibility.

Q: Why is CD74ACT109M marked as Obsolete?

A: Harris Corporation has discontinued this product line. While the device remains functionally equivalent, obsolete status indicates no further manufacturing or technical support from the original manufacturer. This part should be considered only for legacy system repairs where no alternative exists.

Q: Does RoHS compliance affect functional substitution?

A: RoHS compliance is a regulatory and environmental requirement, not a functional parameter. CD74ACT109M96 (ROHS3 compliant) is the appropriate choice for applications subject to RoHS regulations. CD74ACT109M (RoHS non-compliant) is restricted to applications where RoHS exemptions apply or regulatory compliance is not required.

Q: Are there any differences in moisture sensitivity between the substitutes?

A: CD74ACT109ME4 and CD74ACT109M96 both carry MSL Level 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. CD74ACT109M does not specify an MSL rating. For applications requiring controlled moisture handling, CD74ACT109M96 is the recommended choice.