74HC73PW,112 Equivalent & Substitute Parts

Part Overview

The 74HC73PW,112 is a dual JK-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc. in a 14-TSSOP surface mount package. 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 identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74HC73PW,112

Nexperia USA Inc.In Stock: 78774HC73PW,112 Datasheet

Current PartRFQ

MC74HC73ADTR2G

onsemiIn Stock: 2503MC74HC73ADTR2G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC73PW,112 is determined by strict equivalence across the following electrical and mechanical parameters:

Core Functional Parameters:

• Dual JK-type flip-flop architecture with 2 elements, 1 bit per element
• Negative edge trigger configuration
• Complementary output structure
• Reset function capability

Electrical Compatibility Parameters:

• Supply voltage range: 2V ~ 6V
• Output current specifications: 5.2mA (both high and low)
• Quiescent current: 4 µA
• Trigger type: Negative edge

Mechanical Compatibility Parameters:

• Package type: 14-TSSOP (0.173", 4.40mm Width)
• Mounting type: Surface mount
• Pin configuration: 14-pin

Compliance Parameters:

• RoHS3 compliance
• MSL rating: 1 (Unlimited)

The MC74HC73ADTR2G manufactured by onsemi qualifies as a direct substitute based on matching all core functional, electrical, and mechanical parameters within the 74HC logic family.

Parameter Comparison

Engineering Selection Recommendations

The MC74HC73ADTR2G is a direct functional equivalent to the 74HC73PW,112 for applications requiring dual JK-type flip-flop logic in a 14-TSSOP package. Both devices maintain identical supply voltage ranges, output current specifications, quiescent current, and package dimensions.

The MC74HC73ADTR2G offers the advantage of active product status, ensuring ongoing availability and manufacturing support. Both parts maintain ROHS3 compliance and MSL rating 1 (Unlimited), satisfying equivalent environmental and reliability requirements.

The onsemi device exhibits faster propagation delay (21 ns versus 27 ns) and extended lower operating temperature range (-55°C versus -40°C), providing performance headroom in timing-critical applications and broader thermal operating margins. Input capacitance differs (10 pF versus 4.6 pF), which may require circuit-level evaluation in high-frequency or noise-sensitive applications.

Selection between these parts should be based on availability, supply chain continuity, and specific application timing or thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can the MC74HC73ADTR2G directly replace the 74HC73PW,112 in existing designs?

A: Yes. Both devices share identical functional specifications as dual JK-type flip-flops with negative edge triggering, complementary outputs, and 14-TSSOP packaging. Pin configuration and electrical operating parameters are equivalent, supporting direct substitution at the component level.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete versus active), clock frequency specification (83 MHz versus 35 MHz), propagation delay (27 ns versus 21 ns), input capacitance (4.6 pF versus 10 pF), and operating temperature range (-40°C to 125°C versus -55°C to 125°C). These differences do not affect functional equivalence for standard logic applications.

Q: Are the packages physically identical?

A: Yes. Both parts use the 14-TSSOP (0.173", 4.40mm Width) surface mount package with identical pin spacing and dimensions, allowing direct PCB footprint compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 74HC73PW,112 and MC74HC73ADTR2G are ROHS3 compliant with MSL rating 1 (Unlimited), meeting equivalent environmental and reliability certifications.

Q: Which part should be selected for new designs?

A: The MC74HC73ADTR2G is recommended for new designs due to its active product status, ensuring long-term availability and manufacturing continuity. The 74HC73PW,112 is obsolete and should be reserved for legacy system support only.

Q: Does the difference in input capacitance affect circuit performance?

A: Input capacitance differences (4.6 pF versus 10 pF) may impact high-frequency signal integrity and noise coupling in sensitive applications. Circuit-level evaluation is necessary if operating near maximum clock frequency specifications or in noise-critical environments.