TSH330IDT Equivalent & Substitute Parts

Part Overview

The TSH330IDT is a current feedback amplifier manufactured by STMicroelectronics, housed in an 8-SOIC surface mount package. This device is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and production continuity. The TSH330IDT delivers a slew rate of 1800V/µs with a -3dB bandwidth of 1.5 GHz, operating across a 4.5V to 5.5V supply span. Locating functionally compatible substitutes ensures design flexibility and supply chain resilience for applications requiring current feedback amplifier topology in this package configuration.

Substiute Parts

TSH330IDT

STMicroelectronicsIn Stock: 2947TSH330IDT Datasheet

Current PartRFQ

LMH6702MA/NOPB

Texas InstrumentsIn Stock: 1388LMH6702MA/NOPB Datasheet

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LMH6702MAX/NOPB

National SemiconductorIn Stock: 17105LMH6702MAX/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSH330IDT is determined by the following critical parameters:

Package Compatibility: All substitute parts must utilize the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct PCB footprint compatibility without layout modifications.

Amplifier Topology: Substitutes must be current feedback amplifier configurations with a single circuit (1 circuit) to maintain functional equivalence in signal processing architecture.

Operating Temperature Range: Substitute parts must support the -40°C to 85°C operating temperature range to ensure performance across the intended application environment.

Mounting Type: Surface mount technology is required for all substitutes to align with modern manufacturing processes and PCB assembly standards.

Compliance Standards: All substitute parts must maintain ROHS3 compliance and REACH unaffected status to satisfy regulatory and environmental requirements.

The identified substitute parts—LMH6702MA/NOPB and LMH6702MAX/NOPB—satisfy these core substitution criteria. Both parts feature identical package geometry, current feedback amplifier topology, single circuit configuration, and compatible operating temperature specifications. However, these substitutes operate across a 10V to 12V supply span, which differs from the TSH330IDT's 4.5V to 5.5V specification. This supply voltage difference represents a significant design consideration requiring circuit-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

LMH6702MA/NOPB (Texas Instruments) is an active product available in tube packaging with 1320 units in stock. This part maintains ROHS3 compliance and REACH unaffected status. The device exhibits superior performance characteristics compared to the obsolete TSH330IDT, including higher slew rate (3100V/µs versus 1800V/µs) and increased bandwidth (1.7 GHz versus 1.5 GHz). Lower input bias current (6 µA versus 26 µA) and reduced supply current (12.5mA versus 16.6mA) provide improved circuit efficiency. However, the 10V to 12V supply span requirement necessitates power supply circuit modifications from the original 4.5V to 5.5V specification.

LMH6702MAX/NOPB (National Semiconductor) is an active product available in bulk packaging with 17085 units in stock. This part delivers identical electrical performance to the LMH6702MA/NOPB variant, including slew rate, bandwidth, input bias current, and supply current specifications. ROHS3 compliance and REACH unaffected status are maintained. The substantially higher inventory level (17085 units) provides greater supply availability. Like the LMH6702MA/NOPB, this substitute requires 10V to 12V supply voltage operation, differing from the original TSH330IDT specification.

Both substitute parts are suitable for applications where supply voltage can be adjusted to the 10V to 12V range. The enhanced performance metrics of these active devices provide design advantages in high-speed signal processing applications. Selection between LMH6702MA/NOPB and LMH6702MAX/NOPB depends on packaging requirements (tube versus bulk) and inventory availability for production volumes.

Frequently Asked Questions (FAQ)

Q: Can the LMH6702MA/NOPB or LMH6702MAX/NOPB be used as direct pin-for-pin replacements for the TSH330IDT?

A: Both substitute parts share identical 8-SOIC package geometry and pin configuration, enabling direct PCB footprint compatibility without layout modifications. However, the supply voltage requirement differs significantly (10V to 12V for substitutes versus 4.5V to 5.5V for the original), necessitating power supply circuit redesign.

Q: What are the primary performance differences between the TSH330IDT and the substitute parts?

A: The LMH6702MA/NOPB and LMH6702MAX/NOPB offer superior slew rate (3100V/µs versus 1800V/µs), higher bandwidth (1.7 GHz versus 1.5 GHz), lower input bias current (6 µA versus 26 µA), and reduced supply current (12.5mA versus 16.6mA). Output current capability is lower (80 mA versus 453 mA) in the substitute parts.

Q: Are there packaging differences between the substitute parts?

A: LMH6702MA/NOPB is supplied in tube packaging, while LMH6702MAX/NOPB is supplied in bulk packaging. Both utilize identical 8-SOIC package geometry. Selection depends on assembly process requirements and inventory management preferences.

Q: Do the substitute parts maintain the same compliance certifications as the TSH330IDT?

A: Yes, both LMH6702MA/NOPB and LMH6702MAX/NOPB are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original TSH330IDT.

Q: What is the primary design consideration when substituting the TSH330IDT?

A: The supply voltage specification is the critical design parameter. The TSH330IDT operates at 4.5V to 5.5V, while both substitute parts require 10V to 12V operation. Circuit-level power supply modifications are necessary to accommodate this voltage difference.

Q: Are the substitute parts currently in production?

A: Yes, both LMH6702MA/NOPB and LMH6702MAX/NOPB are classified as active products, ensuring ongoing availability and manufacturing support. The TSH330IDT is obsolete and no longer in production.

Q: Which substitute part should be selected for high-volume production?

A: LMH6702MAX/NOPB offers significantly higher inventory availability (17085 units) compared to LMH6702MA/NOPB (1320 units), making it the preferred choice for large-scale production requirements. Both parts deliver identical electrical performance.