TUSB1044RNQR Equivalent & Substitute Parts

Part Overview

The TUSB1044RNQR is a USB-C ReDriver interface component manufactured by Texas Instruments, designed for 10Gbps multi-protocol linear 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 in product status and ROHS3 compliant, making it suitable for current production environments. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component sourcing flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	TUSB1044RNQR
Manufacturer	Texas Instruments
Category	Interface
Type	ReDriver
Applications	USB
Data Rate (Max)	10Gbps
Signal Conditioning	Input Equalization
Voltage - Supply	3V ~ 3.6V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	40-WFQFN Exposed Pad
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the TUSB1044RNQR are identified based on the following critical parameters: supply voltage compatibility (3V ~ 3.6V), surface mount packaging, signal conditioning capability (Input Equalization), RoHS3 compliance, and Active product status. The TUSB1044RNQR is a single-channel USB ReDriver with 10Gbps data rate capability. Substitute components must maintain equivalent interface functionality, voltage specifications, and compliance certifications. The identified substitutes include multi-channel PCIe ReDriver and Buffer devices from Analog Devices Inc./Maxim Integrated that share the same supply voltage range, surface mount technology, signal conditioning features, and regulatory compliance status.

Parameter Comparison

Parameter	TUSB1044RNQR	MAX14950CTO+	MAX14954ETO+	MAX4950ACTX+
Manufacturer	Texas Instruments	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Type	ReDriver	Buffer, ReDriver	Buffer, ReDriver	Buffer, ReDriver
Category	Interface	Interface	Interface	Interface
Voltage - Supply	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	0°C ~ 70°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Signal Conditioning	Input Equalization	Input Equalization, Output De-Emphasis	Input Equalization, Output De-Emphasis	Input Equalization, Output De-Emphasis
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active
Package / Case	40-WFQFN Exposed Pad	42-WFQFN Exposed Pad	42-WFQFN Exposed Pad	36-WFQFN Exposed Pad

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the TUSB1044RNQR. Supply voltage specifications are identical across all components (3V ~ 3.6V), supporting direct electrical substitution in power delivery circuits. Surface mount technology is consistent across all parts, enabling compatibility with existing PCB assembly processes. The substitute parts incorporate enhanced signal conditioning with Output De-Emphasis in addition to Input Equalization, providing additional signal integrity features beyond the main part specification. Operating temperature ranges vary: MAX14954ETO+ extends to -40°C ~ 85°C, while MAX14950CTO+ and MAX4950ACTX+ maintain the 0°C ~ 70°C range matching the TUSB1044RNQR. Package configurations differ in pin count and physical dimensions, requiring PCB layout verification prior to implementation.

Frequently Asked Questions (FAQ)

Q: What electrical parameters determine substitution compatibility for the TUSB1044RNQR?

A: Supply voltage range (3V ~ 3.6V), signal conditioning capability (Input Equalization minimum), and surface mount packaging are the primary electrical parameters governing substitution. All identified substitutes maintain these specifications.

Q: Can MAX14950CTO+ and MAX14954ETO+ be used interchangeably with TUSB1044RNQR?

A: Both parts share identical supply voltage (3V ~ 3.6V), signal conditioning features, RoHS3 compliance, and Active product status. MAX14954ETO+ offers extended operating temperature range (-40°C ~ 85°C) compared to the standard 0°C ~ 70°C specification. Package pin count differs (42-pin vs. 40-pin), requiring PCB design verification.

Q: What is the significance of the different package configurations among substitute parts?

A: TUSB1044RNQR uses 40-WFQFN, MAX14950CTO+ and MAX14954ETO+ use 42-WFQFN, and MAX4950ACTX+ uses 36-WFQFN. Physical dimensions and pin assignments differ, necessitating PCB layout and schematic review before component substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. TUSB1044RNQR, MAX14950CTO+, MAX14954ETO+, and MAX4950ACTX+ are all ROHS3 compliant, meeting environmental and regulatory requirements for current production applications.

Q: What additional signal conditioning features do the substitute parts provide?

A: Substitute parts include Output De-Emphasis in addition to Input Equalization, whereas TUSB1044RNQR specifies Input Equalization only. This enhanced conditioning may improve signal integrity in specific PCIe and high-speed interface applications.

Q: How do operating temperature ranges affect component selection?

A: TUSB1044RNQR, MAX14950CTO+, and MAX4950ACTX+ operate within 0°C ~ 70°C. MAX14954ETO+ extends to -40°C ~ 85°C, suitable for industrial and extended-temperature applications. Application environment requirements determine appropriate selection.

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