TLC4502QDR Equivalent & Substitute Parts

Part Overview

The TLC4502QDR is a CMOS amplifier integrated circuit manufactured by Texas Instruments, containing 2 circuits in an 8-SOIC surface mount package. This device is classified as obsolete, indicating discontinued production and limited availability for new designs. The TLC4502QDR operates as a rail-to-rail output amplifier with CMOS architecture, designed for low-power applications requiring dual-channel amplification. Due to its obsolete status, identification of functionally equivalent substitute components is necessary for design continuity, component sourcing, and long-term production support.

Substiute Parts

TLC4502QDR

Texas InstrumentsIn Stock: 2133TLC4502QDR Datasheet

Current PartRFQ

MAX492CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1496MAX492CSA+ Datasheet

MFR RecommendedRFQ

MAX492CSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1362MAX492CSA+T Datasheet

MFR RecommendedRFQ

MAX492ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 12655MAX492ESA+ Datasheet

MFR RecommendedRFQ

MAX492ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 7978MAX492ESA+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLC4502QDR are identified based on the following critical parameters that determine functional compatibility:

Mechanical Compatibility:

• Package type: 8-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Pin count and footprint equivalence

Electrical Compatibility:

• Number of circuits: 2 channels
• Output type: Rail-to-Rail
• Supply voltage range overlap: Minimum 4V to 6V operation
• Operating temperature range: Devices must support at least the -40°C to 125°C range or a subset thereof

Regulatory Compliance:

• RoHS3 compliance
• MSL rating: 1 (Unlimited)

The substitute parts identified (MAX492CSA+, MAX492CSA+T, MAX492ESA+, MAX492ESA+T) are all manufactured by Analog Devices Inc./Maxim Integrated and share identical mechanical packaging with the TLC4502QDR. All substitutes feature 2-circuit general purpose amplifier architecture with rail-to-rail output in 8-SOIC packages. The MAX492 series maintains functional equivalence through dual-channel amplification capability and compatible pinout configuration.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes for Extended Temperature Range:

MAX492ESA+ and MAX492ESA+T are the preferred substitutes when the full operating temperature range of the TLC4502QDR (-40°C to 125°C) is required. Both variants maintain the -40°C minimum temperature specification and extend to 85°C maximum, covering the lower portion of the original temperature range. These devices are classified as Active products, ensuring long-term availability and production support. Both are ROHS3 compliant and carry identical regulatory certifications to the TLC4502QDR.

Secondary Substitutes for Standard Temperature Range:

MAX492CSA+ and MAX492CSA+T are suitable for applications operating within the 0°C to 70°C temperature range. These variants are also Active products with ROHS3 compliance. Selection between these two depends on packaging requirements: MAX492CSA+ is supplied in Tube packaging, while MAX492CSA+T is supplied in Cut Tape (CT) & Digi-Reel® format.

Packaging Considerations:

All substitute parts are available in multiple packaging formats. MAX492ESA+ and MAX492CSA+ are supplied in Tube packaging. MAX492ESA+T and MAX492CSA+T are supplied in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats respectively, suitable for automated assembly processes.

Supply Voltage Compatibility:

All substitute parts operate within the 2.7V to 6V supply range, which encompasses the TLC4502QDR specification of 4V to 6V. Designs operating at the 4V to 6V range are fully compatible with all substitute options.

Frequently Asked Questions (FAQ)

Q: Can MAX492 series parts directly replace the TLC4502QDR without PCB modifications?

A: Yes. All MAX492 variants share identical 8-SOIC pinout and footprint with the TLC4502QDR. No PCB layout changes are required for mechanical and electrical connection compatibility.

Q: What is the primary difference between MAX492ESA+ and MAX492CSA+ variants?

A: The primary difference is operating temperature range. MAX492ESA+ operates from -40°C to 85°C, while MAX492CSA+ operates from 0°C to 70°C. Selection depends on the application's minimum operating temperature requirement.

Q: Are MAX492ESA+T and MAX492ESA+ electrically identical?

A: Yes. The suffix "T" indicates Tape & Reel packaging format. Both variants are electrically and functionally identical; the difference is only in packaging and delivery format.

Q: Which substitute should be selected for applications requiring the full -40°C to 125°C temperature range of the TLC4502QDR?

A: Neither substitute fully covers the original 125°C maximum specification. MAX492ESA+ and MAX492ESA+T extend to 85°C maximum. Applications requiring operation above 85°C require alternative component evaluation beyond the MAX492 series.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts (MAX492CSA+, MAX492CSA+T, MAX492ESA+, MAX492ESA+T) are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the compliance profile of the TLC4502QDR.

Q: What inventory status should be considered when selecting a substitute?

A: All substitute parts are classified as Active products with current production. MAX492ESA+ has the highest inventory availability at 12,600 pieces, followed by MAX492ESA+T at 7,929 pieces, MAX492CSA+ at 1,450 pieces, and MAX492CSA+T at 1,335 pieces.