TXB0104RGYRG4 Equivalent & Substitute Parts

Part Overview

The TXB0104RGYRG4 is a voltage level translator IC from Texas Instruments designed for bidirectional signal conversion between different voltage domains. This device features 1 circuit with 4 bidirectional channels, supporting data rates up to 100Mbps with auto-direction sensing capability. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design requirements and production needs.

Key Parameters

Parameter	Value
Translator Type	Voltage Level
Channel Type	Bidirectional
Number of Circuits	1
Channels per Circuit	4
Voltage - VCCA	1.2 V ~ 3.6 V
Voltage - VCCB	1.65 V ~ 5.5 V
Output Type	Tri-State, Non-Inverted
Data Rate	100Mbps
Operating Temperature	-40°C ~ 85°C (TA)
Features	Auto-Direction Sensing
Package / Case	14-VFQFN Exposed Pad
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the TXB0104RGYRG4 is determined by strict equivalence across the following critical parameters:

Translator Type: Voltage Level
Channel Type: Bidirectional
Number of Circuits: 1
Channels per Circuit: 4
Voltage - VCCA: 1.2 V ~ 3.6 V
Voltage - VCCB: 1.65 V ~ 5.5 V
Output Type: Tri-State, Non-Inverted
Data Rate: 100Mbps
Operating Temperature: -40°C ~ 85°C (TA)
Features: Auto-Direction Sensing
Package / Case: 14-VFQFN Exposed Pad (mechanical compatibility)
RoHS Status: ROHS3 Compliant

Two substitute parts meet these criteria: TXB0104RGYR (manufacturer-recommended substitute from Texas Instruments) and PI4ULS5V104ZBEX (parametric equivalent from Diodes Incorporated).

Parameter Comparison

Parameter	TXB0104RGYRG4	TXB0104RGYR	PI4ULS5V104ZBEX
Manufacturer	Texas Instruments	Texas Instruments	Diodes Incorporated
Translator Type	Voltage Level	Voltage Level	Voltage Level
Channel Type	Bidirectional	Bidirectional	Bidirectional
Number of Circuits	1	1	1
Channels per Circuit	4	4	4
Voltage - VCCA	1.2 V ~ 3.6 V	1.2 V ~ 3.6 V	1.2 V ~ 3.6 V
Voltage - VCCB	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V
Output Type	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted
Data Rate	100Mbps	100Mbps	100Mbps
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Features	Auto-Direction Sensing	Auto-Direction Sensing	Auto-Direction Sensing
Package / Case	14-VFQFN Exposed Pad	14-VFQFN Exposed Pad	14-VFQFN Exposed Pad
Supplier Device Package	14-VQFN (4.6x4.6)	14-VQFN (4.6x4.6)	14-QFN (4.6x4.6)
Product Status	Discontinued at DiGi Electronics	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)	2 (1 Year)	1 (Unlimited)

Engineering Selection Recommendations

TXB0104RGYR is the primary substitute option. It is manufactured by Texas Instruments (original manufacturer), maintains active product status, and provides identical electrical and mechanical specifications to the discontinued TXB0104RGYRG4. This part is the manufacturer-recommended replacement.

PI4ULS5V104ZBEX is a parametric equivalent from Diodes Incorporated. It meets all critical electrical and mechanical substitution criteria with identical voltage ranges, channel configuration, data rate, and operating temperature. The primary distinction is the improved moisture sensitivity level (MSL 1 versus MSL 2), which provides superior moisture handling characteristics. Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can TXB0104RGYR be used as a direct replacement for TXB0104RGYRG4?

A: Yes. TXB0104RGYR is the manufacturer-recommended substitute with identical electrical specifications, voltage ranges, channel configuration, data rate, operating temperature range, and package dimensions. The primary difference is product status: TXB0104RGYRG4 is discontinued while TXB0104RGYR is active.

Q: What are the key differences between TXB0104RGYR and PI4ULS5V104ZBEX?

A: Both parts are electrically equivalent across all critical parameters: voltage ranges (VCCA 1.2-3.6V, VCCB 1.65-5.5V), 4 bidirectional channels, 100Mbps data rate, and auto-direction sensing. The differences are manufacturer (Texas Instruments versus Diodes Incorporated) and moisture sensitivity level (MSL 2 versus MSL 1). PI4ULS5V104ZBEX offers superior moisture handling with unlimited shelf life versus one year for TXB0104RGYR.

Q: Are the package dimensions identical across all three parts?

A: Yes. All three parts use 14-pin QFN packages with 4.6x4.6mm dimensions and exposed pads. The package / case designation is 14-VFQFN Exposed Pad for all parts, ensuring mechanical compatibility in PCB layouts.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. TXB0104RGYR and PI4ULS5V104ZBEX are both ROHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications as the original TXB0104RGYRG4.

Q: Which substitute should be selected for new designs?

A: Selection depends on supply chain and environmental requirements. TXB0104RGYR is the direct manufacturer replacement from Texas Instruments. PI4ULS5V104ZBEX is suitable when Diodes Incorporated supply is preferred or when the improved MSL 1 rating (unlimited shelf life) is required for long-term storage or high-humidity environments.

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