74HC109D/AUJ Equivalent & Substitute Parts

Part Overview

The 74HC109D/AUJ is a dual JK-type flip-flop logic integrated circuit manufactured by NXP USA Inc. in a 16-SOIC surface mount package. This component is classified as an active product and is used in digital logic applications requiring edge-triggered flip-flop functionality with complementary outputs. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility.

Substiute Parts

74HC109D/AUJ

NXP USA Inc.In Stock: 75774HC109D/AUJ Datasheet

Current PartRFQ

74HC109D,653

Nexperia USA Inc.In Stock: 298274HC109D,653 Datasheet

Parametric EquivalentRFQ

74HC109D-Q100J

Nexperia USA Inc.In Stock: 287874HC109D-Q100J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HC109D/AUJ are identified based on strict electrical and mechanical parameter matching within the 74HC logic series. Substitution eligibility is determined by the following criteria:

Core Substitution Parameters:

• Identical flip-flop type (JK Type, dual element, 1-bit per element)
• Identical output configuration (Complementary outputs)
• Identical trigger mechanism (Positive Edge)
• Identical package form factor (16-SOIC, 0.154" width, 3.90mm)
• Identical or superior clock frequency (81 MHz minimum)
• Identical or superior propagation delay performance (30 ns maximum @ 6V, 50pF)
• Identical supply voltage range (2V to 6V)
• Identical or superior output current capability (5.2 mA minimum)
• Identical operating temperature range (-40°C to 125°C)
• Surface mount configuration with 16-SO supplier device package

Parts meeting all these criteria are classified as parametric equivalents and are suitable for direct substitution in the same circuit application without design modification.

Parameter Comparison

Engineering Selection Recommendations

All three parts listed—74HC109D/AUJ, 74HC109D,653, and 74HC109D-Q100J—are active products with ROHS3 compliance and MSL 1 rating, confirming their suitability for current manufacturing and assembly processes.

The 74HC109D/AUJ and 74HC109D,653 are functionally identical across all electrical parameters and differ only in packaging format (tube versus tape & reel). Selection between these two is determined by procurement and assembly requirements.

The 74HC109D-Q100J is qualified to AEC-Q100 automotive standards and exhibits superior propagation delay performance (16 ns versus 30 ns). This part is suitable for applications requiring automotive-grade qualification or where faster switching performance is beneficial. The automotive qualification does not restrict use in non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can 74HC109D,653 be used as a direct replacement for 74HC109D/AUJ?

A: Yes. Both parts are parametrically identical across all electrical specifications. The difference is packaging format: 74HC109D/AUJ is supplied in tube packaging, while 74HC109D,653 is supplied in tape & reel format. Direct substitution is valid for circuit operation.

Q: What is the difference between 74HC109D-Q100J and the other two parts?

A: The 74HC109D-Q100J carries AEC-Q100 automotive qualification and exhibits faster propagation delay (16 ns versus 30 ns). All other electrical and mechanical parameters are identical. The automotive qualification makes this part suitable for automotive applications; it does not restrict use in standard industrial or consumer applications.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 16-SOIC package with identical pinout and mechanical dimensions (0.154" width, 3.90mm). Pin-to-pin compatibility is confirmed.

Q: Does the packaging format affect circuit performance?

A: No. Tape & reel and tube packaging formats contain identical die and internal construction. Packaging format affects only procurement, storage, and assembly handling. Circuit performance is unaffected.

Q: Can I substitute a faster part (74HC109D-Q100J with 16 ns delay) for a standard part (30 ns delay)?

A: Yes. Faster propagation delay is a performance enhancement and does not create compatibility issues. The circuit will operate correctly with the faster part.

Q: Are all parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant and carry MSL 1 (unlimited moisture sensitivity level), confirming compliance with current environmental and reliability standards.