SN74LVC112ADGVRG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC112ADGVRG4 is a dual JK-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in a 16-TFSOP surface mount package. This component provides two independent 1-bit JK flip-flops with complementary outputs, preset and reset functions, and negative edge triggering. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain identical electrical performance characteristics and package compatibility to ensure direct board-level replacement without design modification.

Substiute Parts

SN74LVC112ADGVRG4

Texas InstrumentsIn Stock: 1086SN74LVC112ADGVRG4 Datasheet

Current PartRFQ

SN74LVC112ADGVR

Texas InstrumentsIn Stock: 3126SN74LVC112ADGVR Datasheet

Parametric EquivalentRFQ

74LCX112MTCX

Fairchild SemiconductorIn Stock: 358574LCX112MTCX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVC112ADGVRG4 is determined by strict adherence to the following critical parameters:

Functional Requirements:

• Dual JK-type flip-flop configuration with 1-bit per element
• Negative edge triggering
• Complementary output type
• Preset and reset functions
• 150 MHz clock frequency capability

Electrical Requirements:

• Supply voltage range: 1.65V ~ 3.6V
• Maximum propagation delay: 5.9 ns @ 3.3V, 50pF load
• Output current capability: 24 mA (high and low)
• Quiescent current: 10 µA maximum
• Input capacitance: 4.5 pF

Physical Requirements:

• 16-pin TFSOP package (0.173", 4.40mm width)
• Surface mount configuration
• Pin-for-pin compatibility

Compliance Requirements:

• ROHS3 compliance
• MSL Level 1 (Unlimited moisture sensitivity)

Substitute parts must satisfy all functional, electrical, physical, and compliance parameters without deviation. Parts meeting these criteria are classified as parametric equivalents or manufacturer-recommended alternatives.

Parameter Comparison

Engineering Selection Recommendations

SN74LVC112ADGVR (Parametric Equivalent - Preferred)

The SN74LVC112ADGVR is the optimal substitute for the discontinued SN74LVC112ADGVRG4. This part is manufactured by Texas Instruments, the original equipment manufacturer, and maintains identical electrical specifications including propagation delay (5.9 ns), supply voltage range (1.65V ~ 3.6V), and input capacitance (4.5 pF). The primary difference is packaging format: the substitute is supplied in Tape & Reel (TR) configuration versus the original's unspecified packaging. Both parts are ROHS3 compliant and MSL Level 1. The SN74LVC112ADGVR is currently active in production with 3110 units in stock, ensuring supply continuity. Pin-for-pin compatibility and identical functional performance make this the direct replacement for existing designs.

74LCX112MTCX (Manufacturer-Recommended Alternative)

The 74LCX112MTCX, manufactured by Fairchild Semiconductor, is a manufacturer-recommended alternative when the primary substitute is unavailable. This part maintains functional equivalence as a dual JK-type flip-flop with identical element count, trigger type, output type, and clock frequency. However, three electrical parameters deviate from the original specification:

• Maximum propagation delay increases to 7.5 ns (versus 5.5 ns original)
• Supply voltage minimum increases to 2V (versus 1.65V original)
• Input capacitance increases to 7 pF (versus 4.5 pF original)

The package format differs from the original (16-TSSOP versus 16-TFSOP), requiring PCB layout verification for pin pitch and footprint compatibility. RoHS compliance status is not specified for this part. Selection of the 74LCX112MTCX is appropriate only when timing margin exists in the application and the reduced supply voltage range does not conflict with system requirements.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVC112ADGVR be used as a direct replacement for the SN74LVC112ADGVRG4?

A: Yes. The SN74LVC112ADGVR is a parametric equivalent with identical electrical specifications, functional configuration, and pin assignment. The only difference is packaging format (Tape & Reel versus unspecified). Both parts are pin-for-pin compatible and require no design modification.

Q: What are the key differences between the SN74LVC112ADGVR and the 74LCX112MTCX?

A: The SN74LVC112ADGVR maintains all original electrical specifications. The 74LCX112MTCX introduces three parameter deviations: propagation delay increases from 5.9 ns to 7.5 ns, minimum supply voltage increases from 1.65V to 2V, and input capacitance increases from 4.5 pF to 7 pF. Additionally, the package format differs (16-TSSOP versus 16-TFSOP).

Q: Is the 74LCX112MTCX package compatible with the original 16-TFSOP footprint?

A: Both the 74LCX112MTCX (16-TSSOP) and the original SN74LVC112ADGVRG4 (16-TFSOP) are 16-pin surface mount packages with 0.173" width. However, TSSOP and TFSOP packages have different pitch and lead geometry specifications. PCB footprint verification is required before substitution to confirm mechanical compatibility.

Q: What is the supply voltage range difference between the main part and the 74LCX112MTCX?

A: The SN74LVC112ADGVRG4 operates from 1.65V to 3.6V. The 74LCX112MTCX operates from 2V to 3.6V. If the application requires operation below 2V, the 74LCX112MTCX is not suitable.

Q: Are both substitute parts ROHS3 compliant?

A: The SN74LVC112ADGVR is confirmed ROHS3 compliant. The 74LCX112MTCX RoHS compliance status is not specified in the provided data and must be verified with the manufacturer before selection for RoHS-regulated applications.

Q: What is the propagation delay impact of using the 74LCX112MTCX?

A: The 74LCX112MTCX has a maximum propagation delay of 7.5 ns at 3.3V with 50pF load, compared to 5.9 ns for the original part. This represents a 27% increase in delay. Applications with tight timing constraints must evaluate whether this delay increase affects system performance.