THS3091D Equivalent & Substitute Parts

Part Overview

The THS3091D is a current feedback amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The THS3091D 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

THS3091D

Texas InstrumentsIn Stock: 3215THS3091D 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 of the THS3091D is determined by strict alignment of electrical and mechanical parameters within the current feedback amplifier category. The primary substitution criteria are:

Mandatory Matching Parameters:

• Amplifier topology: Current Feedback architecture
• Package type: 8-SOIC surface mount form factor
• Number of circuits: Single amplifier per package
• Supply voltage range compatibility: Minimum 10 V to maximum 30 V operating span
• Operating temperature range: -40°C to 85°C
• Compliance certifications: ROHS3, MSL 1, REACH Unaffected

Performance Consideration Parameters:

• Slew rate and bandwidth must support the application requirements
• Output current capability must meet load specifications
• Input bias current and offset voltage must be acceptable for the circuit design

The LT1252CS8#PBF and LT1252CS8#TRPBF (Analog Devices Inc.) satisfy these criteria as current feedback amplifiers in 8-SOIC packaging with compatible supply voltage ranges and compliance certifications. Both variants represent the same electrical device; packaging differs only in delivery format (Tube versus Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The THS3091D is designated Last Time Buy, signifying end-of-life status with no future production. The LT1252CS8#PBF and LT1252CS8#TRPBF are both Active products from Analog Devices Inc., ensuring ongoing availability and long-term supply chain stability.

Compliance and Certification: All three devices maintain ROHS3 compliance, MSL 1 rating, and REACH Unaffected status, satisfying regulatory requirements for industrial and commercial applications.

Packaging and Delivery: LT1252CS8#PBF is supplied in Tube packaging, while LT1252CS8#TRPBF is supplied in Tape & Reel format. Selection between these variants depends on assembly process requirements and volume specifications. Both contain identical electrical components.

Performance Trade-offs: The LT1252 series exhibits higher -3dB bandwidth (282 MHz versus 235 MHz) but lower slew rate (125 V/µs versus 7300 V/µs) and reduced output current capability (55 mA versus 280 mA) compared to the THS3091D. Circuit designs must evaluate whether these performance differences are acceptable for the intended application.

Frequently Asked Questions (FAQ)

Q: Can LT1252CS8#PBF and LT1252CS8#TRPBF be used interchangeably with THS3091D?

A: Both LT1252 variants are electrically identical and share the same 8-SOIC package footprint as the THS3091D. Interchangeability depends on application-specific performance requirements, particularly slew rate and output current specifications. Circuit validation is necessary to confirm compatibility.

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

A: These parts are electrically identical. The primary difference is packaging format: LT1252CS8#PBF is supplied in Tube packaging for manual handling and lower-volume applications, while LT1252CS8#TRPBF is supplied in Tape & Reel format for automated assembly processes and higher volumes.

Q: Why does the LT1252 have lower slew rate and output current than the THS3091D?

A: The LT1252 is optimized for video amplifier applications with emphasis on bandwidth and noise performance, while the THS3091D prioritizes transient response and output drive capability. These represent different design trade-offs within the current feedback amplifier category.

Q: Are all three devices suitable for the same supply voltage range?

A: The THS3091D operates from 10 V to 30 V. The LT1252 operates from 4 V to 28 V (single supply) or ±2 V to ±14 V (dual supply). The LT1252 supports lower minimum supply voltages but has a slightly lower maximum single-supply rating. Verify supply voltage compatibility with your specific circuit design.

Q: Do all devices meet the same regulatory requirements?

A: Yes. All three devices are ROHS3 compliant, carry MSL 1 rating, and are REACH Unaffected, meeting current regulatory standards for industrial and commercial electronics.