74LVC1G139DCUTE4 Equivalent & Substitute Parts

Part Overview

The 74LVC1G139DCUTE4 is a single decoder/demultiplexer integrated circuit in the 74LVC logic family, manufactured by Texas Instruments. This component functions as a 1 x 2:4 decoder with 8-VSSOP surface mount packaging. The main part number is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design requirements and production continuity.

Substiute Parts

74LVC1G139DCUTE4

Texas InstrumentsIn Stock: 126774LVC1G139DCUTE4 Datasheet

Current PartRFQ

SN74LVC1G139DCUR

Texas InstrumentsIn Stock: 18446SN74LVC1G139DCUR Datasheet

Parametric EquivalentRFQ

SN74LVC1G139DCUT

Texas InstrumentsIn Stock: 2096SN74LVC1G139DCUT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC1G139DCUTE4 is determined by strict equivalence across the following parameters:

• Base product number: 74LVC1G139
• Decoder/demultiplexer type with 1 x 2:4 circuit configuration
• Single independent circuit
• 8-VSSOP package / 8-VFSOP case dimensions
• Voltage supply range: 1.65V ~ 5.5V
• Output current specifications: 32mA high, 32mA low
• Operating temperature range: -40°C ~ 85°C
• Surface mount technology
• RoHS3 compliance and MSL Level 1 rating

The substitute parts SN74LVC1G139DCUR and SN74LVC1G139DCUT meet all these electrical and mechanical parameters. The primary difference between these parts is packaging format: the main part uses tube packaging (DCUTE4), while substitutes use Cut Tape & Digi-Reel (DCUR) or Tape & Reel (DCUT) formats.

Parameter Comparison

Engineering Selection Recommendations

Both SN74LVC1G139DCUR and SN74LVC1G139DCUT are active product alternatives to the obsolete 74LVC1G139DCUTE4. These parts maintain identical electrical specifications and physical package dimensions, ensuring direct functional compatibility in circuit designs.

Selection between the two active substitutes depends on procurement and assembly requirements:

• SN74LVC1G139DCUR (Cut Tape & Digi-Reel format) offers 18,387 units in current inventory, suitable for mixed-volume production runs and component kitting operations.
• SN74LVC1G139DCUT (Tape & Reel format) provides 2,074 units in inventory, appropriate for high-volume automated assembly processes.

Both parts carry ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC1G139DCUR or SN74LVC1G139DCUT be used as direct replacements for 74LVC1G139DCUTE4?

A: Yes. All three parts share identical electrical parameters, circuit configuration (1 x 2:4 decoder/demultiplexer), and physical package dimensions (8-VFSOP). The only difference is the packaging format (tube versus cut tape/reel), which does not affect circuit performance or PCB assembly compatibility.

Q: What is the difference between the two substitute parts?

A: SN74LVC1G139DCUR uses Cut Tape & Digi-Reel packaging, while SN74LVC1G139DCUT uses Tape & Reel packaging. Both contain identical die and electrical specifications. The choice depends on production volume and assembly equipment capabilities.

Q: Why is the original 74LVC1G139DCUTE4 listed as obsolete?

A: Product status reflects Texas Instruments' manufacturing and support lifecycle. Active alternatives with identical specifications are available through SN74LVC1G139DCUR and SN74LVC1G139DCUT.

Q: Are there any electrical differences between these parts?

A: No. All three parts operate within the same voltage supply range (1.65V ~ 5.5V), deliver identical output current (32mA high/low), and function across the same temperature range (-40°C ~ 85°C).

Q: What packaging considerations apply when switching from tube to tape & reel formats?

A: Tape & Reel packaging (DCUT) is optimized for automated pick-and-place assembly at high volumes. Cut Tape & Digi-Reel (DCUR) accommodates both manual and semi-automated assembly. PCB footprint and electrical performance remain unchanged.