THS3091DR Equivalent & Substitute Parts

Part Overview

The THS3091DR is a current feedback amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as a Last Time Buy product, indicating discontinued production with limited inventory availability. The THS3091DR delivers high-speed amplification with a slew rate of 7300 V/µs and -3dB bandwidth of 235 MHz, suitable for applications requiring fast transient response and wide bandwidth performance. Due to its Last Time Buy status, identifying functionally compatible substitute components is essential for design continuity and long-term supply chain planning.

Substiute Parts

THS3091DR

Texas InstrumentsIn Stock: 1996THS3091DR Datasheet

Current PartRFQ

LT1252CS8#PBF

Analog Devices Inc.In Stock: 1196LT1252CS8#PBF Datasheet

MFR RecommendedRFQ

LT1252CS8#TRPBF

Analog Devices Inc.In Stock: 1089LT1252CS8#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the THS3091DR is determined by the following critical parameters:

Primary Substitution Criteria:

• Amplifier topology: Current Feedback architecture
• Number of circuits: Single circuit configuration
• Package type: 8-SOIC surface mount form factor
• Pin compatibility: Identical pinout and footprint
• Operating temperature range: -40°C to 85°C minimum
• RoHS3 compliance and MSL Level 1 rating

Secondary Performance Considerations:

• Slew rate: Minimum 7300 V/µs (or higher for enhanced performance)
• -3dB bandwidth: Minimum 235 MHz (or higher for extended frequency response)
• Supply voltage range: Compatibility with 10 V to 30 V span
• Output current capability: Minimum 280 mA per channel
• Input bias current and offset voltage specifications

The LT1252CS8#PBF and LT1252CS8#TRPBF (Analog Devices Inc.) meet the core substitution criteria through identical package geometry, current feedback topology, single-circuit configuration, and surface mount mounting type. Both devices maintain ROHS3 compliance and MSL Level 1 rating, ensuring regulatory and environmental compatibility.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The THS3091DR is designated Last Time Buy, indicating end-of-life status with finite inventory. Both LT1252CS8#PBF and LT1252CS8#TRPBF are Active products from Analog Devices Inc., ensuring ongoing availability and long-term supply chain stability.

Compliance and Certification: All three devices maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, satisfying regulatory requirements for industrial and commercial applications. REACH status is unaffected for all parts, and ECCN classification is EAR99 across all variants.

Performance Trade-offs: The LT1252 series exhibits higher -3dB bandwidth (282 MHz versus 235 MHz), providing extended frequency response capability. However, the LT1252 series delivers reduced slew rate (125 V/µs versus 7300 V/µs) and lower output current per channel (55 mA versus 280 mA). These performance differences require circuit-level evaluation to determine substitution feasibility for specific applications.

Packaging Selection: LT1252CS8#PBF is supplied in Tube packaging, suitable for manual assembly and lower-volume production. LT1252CS8#TRPBF is supplied in Tape & Reel format, optimized for automated pick-and-place assembly and high-volume manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can the LT1252CS8#PBF directly replace the THS3091DR in existing designs?

A: Both devices share identical 8-SOIC package geometry and current feedback amplifier topology, enabling direct footprint compatibility. However, the LT1252 series exhibits significantly lower slew rate (125 V/µs versus 7300 V/µs) and reduced output current capability (55 mA versus 280 mA). Circuit-level verification is required to confirm functional compatibility with specific application requirements.

Q: What is the difference between LT1252CS8#PBF and LT1252CS8#TRPBF?

A: Both parts are electrically identical LT1252 current feedback amplifiers in 8-SOIC packages. The primary difference is packaging format: LT1252CS8#PBF is supplied in Tube packaging for manual handling, while LT1252CS8#TRPBF is supplied in Tape & Reel format for automated assembly equipment. Selection depends on manufacturing process requirements and production volume.

Q: Are there supply chain advantages to using the LT1252 series over the THS3091DR?

A: Yes. The THS3091DR is Last Time Buy status with limited inventory (1900 Pcs), indicating discontinued production. Both LT1252 variants are Active products with ongoing manufacturing and distribution, providing superior long-term availability and supply chain predictability.

Q: What are the key performance differences between these devices?

A: The THS3091DR provides superior slew rate (7300 V/µs) and output current capability (280 mA), making it suitable for high-speed, high-current applications. The LT1252 series offers wider -3dB bandwidth (282 MHz) but lower slew rate and output current. Application-specific performance requirements determine substitution viability.

Q: Do all three devices meet the same regulatory and environmental standards?

A: Yes. All three devices are ROHS3 compliant, carry MSL Level 1 (Unlimited) moisture sensitivity rating, maintain REACH unaffected status, and share EAR99 ECCN classification. Regulatory and environmental compatibility is equivalent across all variants.