TUSB1044RNQT Equivalent & Substitute Parts

Part Overview

The TUSB1044RNQT is a USB-C ReDriver interface component manufactured by Texas Instruments, designed for 10Gbps multi-protocol linear signal conditioning applications. This Surface Mount device operates within the 3V to 3.6V supply voltage range and is housed in a 40-WQFN (6x4) package with exposed pad. The component is Active status and ROHS3 compliant, making it suitable for current production environments. Substitute parts may be required due to inventory constraints, design optimization for specific channel configurations, or application-specific performance requirements such as operating temperature ranges or supply current specifications.

Substiute Parts

TUSB1044RNQT

Texas InstrumentsIn Stock: 1617TUSB1044RNQT Datasheet

Current PartRFQ

MAX14950CTO+

Analog Devices Inc./Maxim IntegratedIn Stock: 1455MAX14950CTO+ Datasheet

MFR RecommendedRFQ

MAX14954ETO+

Analog Devices Inc./Maxim IntegratedIn Stock: 809MAX14954ETO+ Datasheet

MFR RecommendedRFQ

MAX4950ACTX+

Analog Devices Inc./Maxim IntegratedIn Stock: 955MAX4950ACTX+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TUSB1044RNQT is determined by the following critical parameters: supply voltage compatibility (3V ~ 3.6V), surface mount packaging capability, RoHS3 compliance, and ReDriver/Buffer functionality within the Interface category. The substitute parts listed—MAX14950CTO+, MAX14954ETO+, and MAX4950ACTX+—share the core electrical characteristics of the main part, including identical supply voltage ranges and RoHS3 compliance status. All substitute parts are manufactured by Analog Devices Inc./Maxim Integrated and maintain Active product status. Substitution logic is based on functional equivalence as ReDriver or Buffer components with input equalization and output de-emphasis signal conditioning capabilities. Channel count variations (4-channel or 2-channel configurations) and package form factors differ among substitutes, requiring design-level validation for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the TUSB1044RNQT. The MAX14950CTO+ and MAX4950ACTX+ operate within the identical 0°C to 70°C temperature range as the main part, while the MAX14954ETO+ extends the operating temperature range to -40°C to 85°C, suitable for applications requiring extended thermal performance. Package footprint differences (40-WQFN versus 42-TQFN or 36-TQFN) require PCB layout validation. All substitute parts share identical supply voltage specifications (3V ~ 3.6V) and maintain unlimited moisture sensitivity classification. Selection should be based on specific application requirements including channel count needs, thermal operating conditions, and available board space for the respective package geometries.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the TUSB1044RNQT?

A: Substitution eligibility is based on matching supply voltage range (3V ~ 3.6V), ReDriver or Buffer functionality, surface mount capability, RoHS3 compliance, and Active product status. All listed substitutes meet these core criteria.

Q: Are the substitute parts pin-compatible with the TUSB1044RNQT?

A: No. The TUSB1044RNQT uses a 40-WQFN package, while substitutes use 42-TQFN or 36-TQFN packages. PCB redesign is required for any substitution.

Q: What is the difference between the MAX14950CTO+ and MAX14954ETO+?

A: Both are 4-channel ReDriver devices in 42-TQFN packages with identical supply voltage and signal conditioning. The MAX14954ETO+ operates across -40°C to 85°C (extended range) versus 0°C to 70°C for the MAX14950CTO+, and has lower supply current (205mA versus 328mA).

Q: Why does the MAX4950ACTX+ have different specifications?

A: The MAX4950ACTX+ is a 2-channel ReDriver in a 36-TQFN package, compared to the 4-channel configuration of other substitutes. It is suitable for applications requiring fewer channels and a smaller footprint, with lower supply current (130mA) but higher delay time (280ps).

Q: Are all substitute parts available in the same packaging format?

A: No. The TUSB1044RNQT is supplied in Tape & Reel format. Substitutes are available in Tray (MAX14950CTO+, MAX14954ETO+) or Tube (MAX4950ACTX+) packaging, which may affect procurement and handling procedures.

Q: Do all parts have the same moisture sensitivity classification?

A: Yes. The TUSB1044RNQT and all substitute parts are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.