UAF42AUG4 Equivalent & Substitute Parts

Part Overview

The UAF42AUG4 is a universal, continuous-time filter IC manufactured by Texas Instruments, designed for signal conditioning applications requiring 100kHz cutoff frequency operation. This device integrates three independent filter stages in a 16-SOIC surface mount package and operates across a ±6V to ±18V supply voltage range.

The UAF42AUG4 is classified as obsolete. Locating equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this filter architecture.

Substiute Parts

UAF42AUG4

Texas InstrumentsIn Stock: 705UAF42AUG4 Datasheet

Current PartRFQ

UAF42AU

Texas InstrumentsIn Stock: 3235UAF42AU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UAF42AUG4 is determined by strict equivalence across the following critical parameters:

• Filter Type: Universal, Continuous-Time
• Frequency - Cutoff or Center: 100kHz
• Number of Filters: 3
• Voltage - Supply: ±6V ~ 18V
• Package / Case: 16-SOIC (0.295", 7.50mm Width)
• Base Product Number: UAF42

The UAF42AU qualifies as a direct substitute because it maintains identical electrical specifications, package geometry, and functional architecture. The primary distinction is product status: UAF42AU is active and currently manufactured, whereas UAF42AUG4 is obsolete. Both devices share the same base product number (UAF42) and are manufactured by Texas Instruments.

Parameter Comparison

Engineering Selection Recommendations

The UAF42AU is the direct substitute for the obsolete UAF42AUG4. Both devices are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters. The UAF42AU is currently in active production status with higher inventory availability (3170 pcs vs. 691 pcs for the UAF42AUG4).

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and legacy system support. The identical MSL rating (3, 168 Hours) and supply voltage range (±6V ~ 18V) confirm functional interchangeability in existing circuit implementations.

Selection of the UAF42AU eliminates obsolescence risk while preserving design integrity and maintaining supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the UAF42AU be used as a direct replacement for the UAF42AUG4?

A: Yes. The UAF42AU is electrically and mechanically equivalent to the UAF42AUG4. Both devices feature identical filter specifications (universal, continuous-time, 100kHz, 3 filters), supply voltage range (±6V ~ 18V), and 16-SOIC package geometry. The primary difference is product status: UAF42AU is active, while UAF42AUG4 is obsolete.

Q: Are there any package or pinout differences between these parts?

A: No. Both the UAF42AUG4 and UAF42AU use the 16-SOIC package with 0.295" width (7.50mm). Pinout and PCB footprint compatibility is guaranteed.

Q: What is the significance of the product status difference?

A: The UAF42AUG4 is obsolete and no longer manufactured. The UAF42AU is the active equivalent currently produced by Texas Instruments. For new designs or ongoing production, the UAF42AU ensures long-term availability and supply chain stability.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the UAF42AUG4 and UAF42AU are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Regulatory compliance is maintained across both parts.

Q: Are there inventory considerations when selecting between these parts?

A: The UAF42AU has significantly higher inventory availability (3170 pcs) compared to the UAF42AUG4 (691 pcs). For production planning and supply chain reliability, the UAF42AU is the preferred selection.