74LCX112MTC Equivalent & Substitute Parts

Part Overview

The 74LCX112MTC is a dual JK-type flip-flop logic IC manufactured by onsemi, housed in a 16-TSSOP package. This device provides two independent 1-bit JK flip-flops with complementary outputs, negative edge triggering, and Set/Reset functionality. The part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Texas Instruments offers multiple active alternatives in the 74LVC112 series that provide functional and electrical equivalence with enhanced availability and active product status.

Substiute Parts

74LCX112MTC

onsemiIn Stock: 117974LCX112MTC Datasheet

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SN74LVC112ADBR

Texas InstrumentsIn Stock: 2947SN74LVC112ADBR Datasheet

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SN74LVC112ADGVR

Texas InstrumentsIn Stock: 3126SN74LVC112ADGVR Datasheet

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SN74LVC112APW

Texas InstrumentsIn Stock: 2389SN74LVC112APW Datasheet

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SN74LVC112APWR

Texas InstrumentsIn Stock: 6455SN74LVC112APWR Datasheet

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SN74LVC112APWT

Texas InstrumentsIn Stock: 1977SN74LVC112APWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LCX112MTC is determined by strict equivalence in the following critical parameters:

Functional Requirements:

• Dual JK-type flip-flop architecture with 2 elements, 1 bit per element
• Complementary output configuration
• Negative edge triggering
• Set (Preset) and Reset functionality

Electrical Specifications:

• Clock frequency: 150 MHz minimum
• Output drive capability: 24mA high and low
• Operating temperature range: -40°C to 85°C
• Supply voltage compatibility within specified ranges

Mechanical Compatibility:

• Surface mount technology
• 16-pin package footprint (TSSOP or TFSOP variants with identical 0.173" width and 4.40mm body width)

Compliance Requirements:

• ROHS3 compliance
• REACH unaffected status
• EAR99 classification

The Texas Instruments 74LVC112 series substitutes meet all functional and electrical requirements while offering active product status and improved propagation delay performance.

Parameter Comparison

Engineering Selection Recommendations

All Texas Instruments 74LVC112 variants are direct functional substitutes for the 74LCX112MTC. Selection among the five available options depends on packaging and supply chain requirements:

Package Selection:

• SN74LVC112ADGVR: 16-TFSOP package with identical 0.173" width and 4.40mm body width. Direct footprint compatibility with 74LCX112MTC. Recommended for PCB designs requiring no layout modifications.
• SN74LVC112APW, SN74LVC112APWR, SN74LVC112APWT: 16-TSSOP package with identical 0.173" width and 4.40mm body width. Direct footprint compatibility with 74LCX112MTC. Differentiated by packaging format (Tube vs. Tape & Reel).
• SN74LVC112ADBR: 16-SSOP package with 0.209" width and 5.30mm body width. Requires PCB layout verification due to different package dimensions.

Supply Chain Considerations: All five substitutes carry active product status from Texas Instruments, ensuring long-term availability. Inventory levels range from 1,887 to 6,424 units. ROHS3 compliance and REACH unaffected status are maintained across all variants.

Performance Enhancement: Texas Instruments 74LVC112 devices provide improved propagation delay (5.9ns versus 7.5ns at 3.3V, 50pF), offering timing margin improvement in existing designs. Extended supply voltage range (1.65V minimum versus 2V) provides additional design flexibility.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC112ADBR be used as a direct replacement for 74LCX112MTC?

A: SN74LVC112ADBR is functionally equivalent but uses a 16-SSOP package (0.209" width, 5.30mm body) compared to the 74LCX112MTC 16-TSSOP package (0.173" width, 4.40mm body). PCB layout verification is required to confirm footprint compatibility. For direct drop-in replacement without layout changes, use SN74LVC112ADGVR, SN74LVC112APW, SN74LVC112APWR, or SN74LVC112APWT.

Q: What is the difference between SN74LVC112APW, SN74LVC112APWR, and SN74LVC112APWT?

A: These three parts are electrically and functionally identical. The differences are in packaging format: SN74LVC112APW is supplied in Tube packaging, while SN74LVC112APWR and SN74LVC112APWT are supplied in Tape & Reel format. Selection depends on assembly process requirements and quantity needs.

Q: Are there any electrical differences between 74LCX112MTC and the 74LVC112 substitutes?

A: The 74LVC112 series provides improved propagation delay (5.9ns versus 7.5ns) and extended minimum supply voltage (1.65V versus 2V). All other electrical parameters, including output drive current, quiescent current, clock frequency, and operating temperature range, are identical. These improvements are beneficial for system performance.

Q: Is the 74LCX112MTC obsolete?

A: Yes, the 74LCX112MTC is classified as obsolete. Texas Instruments 74LVC112 variants are active products with confirmed long-term availability, making them the recommended substitutes for new designs and production continuity.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes, all five Texas Instruments 74LVC112 substitutes are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of the 74LCX112MTC.

Q: Which substitute offers the best footprint compatibility?

A: SN74LVC112ADGVR (16-TFSOP) and SN74LVC112APW/APWR/APWT (16-TSSOP) provide identical package dimensions to the 74LCX112MTC (0.173" width, 4.40mm body width), ensuring direct PCB compatibility without layout modifications.