TSH73CDT Equivalent & Substitute Parts

Part Overview

The TSH73CDT is a general-purpose operational amplifier manufactured by STMicroelectronics, featuring three independent circuits in a 14-SOIC surface-mount package. This device provides rail-to-rail output capability with a gain-bandwidth product of 65 MHz and operates across a 3V to 12V supply range. The TSH73CDT is classified as obsolete, necessitating identification of active alternative components for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while meeting current manufacturing and compliance standards.

Substiute Parts

TSH73CDT

STMicroelectronicsIn Stock: 22961TSH73CDT Datasheet

Current PartRFQ

MAX4019ESD+

Analog Devices Inc./Maxim IntegratedIn Stock: 4026MAX4019ESD+ Datasheet

SimilarRFQ

MAX4019ESD+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2112MAX4019ESD+T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TSH73CDT are identified based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

Mechanical Compatibility:

• Package type: 14-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Pin count and footprint equivalence

Electrical Compatibility:

• Number of circuits: 3 independent amplifier circuits
• Output type: Rail-to-Rail capability
• Supply voltage range: Minimum 3V, Maximum 12V (substitute must support the full TSH73CDT operating range)
• Functional classification: General Purpose or Buffer/Voltage Feedback amplifier types

The MAX4019ESD+ and MAX4019ESD+T devices meet these substitution criteria. Both variants share identical electrical specifications and package geometry, differing only in packaging format (Tube versus Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TSH73CDT is classified as obsolete. The MAX4019ESD+ and MAX4019ESD+T are active products from Analog Devices Inc./Maxim Integrated, ensuring ongoing availability and manufacturing support for new designs and production continuity.

Compliance and Certification: All three devices maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for electronic component procurement. Moisture sensitivity level remains at MSL 1 (Unlimited) across all variants, indicating no special handling requirements during storage or assembly.

Electrical Performance: The MAX4019 series demonstrates enhanced electrical performance relative to the TSH73CDT. Slew rate increases from 118V/µs to 600V/µs, and gain-bandwidth product increases from 65 MHz to 140 MHz. Output current capability per channel increases from 55 mA to 120 mA. These improvements provide design margin for applications requiring higher bandwidth or output drive capability.

Supply Voltage Range: The MAX4019 series operates from 3.15V to 11V, compared to the TSH73CDT range of 3V to 12V. The minimum supply voltage is slightly higher (3.15V versus 3V), and the maximum is slightly lower (11V versus 12V). Applications operating at the extremes of the TSH73CDT supply range require verification of MAX4019 compatibility.

Packaging Selection: MAX4019ESD+ (Tube packaging) and MAX4019ESD+T (Tape & Reel packaging) are electrically identical. Selection between these variants depends on procurement volume and assembly process requirements. Tape & Reel packaging is standard for high-volume automated assembly operations.

Frequently Asked Questions (FAQ)

Q: Can the MAX4019ESD+ directly replace the TSH73CDT in existing designs?

A: The MAX4019ESD+ and MAX4019ESD+T share identical pinout and package geometry with the TSH73CDT, enabling direct physical substitution in 14-SOIC surface-mount applications. Electrical performance is enhanced across multiple parameters. However, designs operating at the upper supply voltage limit (11V to 12V) or lower supply voltage limit (3V to 3.15V) require circuit verification to confirm MAX4019 operation within specified tolerances.

Q: What is the difference between MAX4019ESD+ and MAX4019ESD+T?

A: Both devices are electrically and functionally identical. The primary difference is packaging format: MAX4019ESD+ is supplied in Tube packaging, while MAX4019ESD+T is supplied in Tape & Reel (TR) format. Tape & Reel packaging is optimized for high-volume automated assembly processes, whereas Tube packaging is suitable for lower-volume or manual assembly operations.

Q: Are there any temperature range limitations when substituting the MAX4019 for the TSH73CDT?

A: The TSH73CDT operates from 0°C to 70°C, while the MAX4019 series operates from -40°C to 85°C. The MAX4019 provides extended low-temperature operation and higher maximum operating temperature. Applications limited to the TSH73CDT temperature range (0°C to 70°C) operate within the MAX4019 specification window without restriction.

Q: Do the substitute parts meet the same regulatory and compliance standards?

A: Yes. Both the MAX4019ESD+ and MAX4019ESD+T maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity level, matching the TSH73CDT compliance profile. No additional regulatory documentation or qualification is required for substitution in applications subject to these standards.

Q: What are the key electrical differences between the TSH73CDT and MAX4019 series?

A: The MAX4019 series provides superior performance in slew rate (600V/µs versus 118V/µs), gain-bandwidth product (140 MHz versus 65 MHz), and output current per channel (120 mA versus 55 mA). Input bias current is slightly lower (5.4 µA versus 6 µA), while input offset voltage is higher (4 mV versus 1.1 mV). These differences result in faster signal response and higher output drive capability at the expense of slightly increased input offset voltage.

Q: Is the MAX4019 suitable for applications requiring the full 3V to 12V supply range of the TSH73CDT?

A: The MAX4019 operates from 3.15V to 11V. Applications requiring operation below 3.15V or above 11V are outside the MAX4019 specification range. Designs operating within 3.15V to 11V are fully compatible. Applications requiring the extended supply range of the TSH73CDT (3V to 12V) must evaluate alternative substitutes or confirm that circuit operation at the MAX4019 limits is acceptable.