PI4ULS5V102UE Equivalent & Substitute Parts

Part Overview

The PI4ULS5V102UE is a voltage level translator IC manufactured by Diodes Incorporated, designed for bidirectional signal translation between different voltage domains. This device features 1 circuit with 2 channels operating at 100 Mbps, housed in an 8-MSOP package. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Translator Type	Voltage Level
Channel Type	Bidirectional
Number of Circuits	1
Channels per Circuit	2
Voltage - VCCA	1.2 V ~ 3.6 V
Voltage - VCCB	1.65 V ~ 5.5 V
Output Type	Tri-State, Non-Inverted
Data Rate	100 Mbps
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the PI4ULS5V102UE is determined by the following critical parameters:

Translator Architecture: Bidirectional voltage level translation with 1 circuit and 2 channels per circuit
Voltage Compatibility: VCCA range 1.2 V ~ 3.6 V and VCCB range 1.65 V ~ 5.5 V
Output Configuration: Tri-State, Non-Inverted output type
Data Rate Performance: Minimum 100 Mbps capability
Package Compatibility: 8-pin surface mount packages (8-MSOP, 8-TSSOP, or equivalent footprints)
Compliance: ROHS3 compliance required

Substitute parts are grouped into two categories based on performance tier and package type:

Category A - Enhanced Performance Substitutes (500 Mbps): 74AVC series parts offering superior data rate performance while maintaining voltage compatibility and package compatibility.

Category B - Compatible Performance Substitutes (420 Mbps): 74LVC series parts providing adequate performance for the original specification while supporting extended voltage ranges.

Parameter Comparison

Part Number	Manufacturer	Translator Type	Channels	VCCA Range	VCCB Range	Data Rate	Temp Range	Package	Status
PI4ULS5V102UE	Diodes Inc.	Voltage Level	2	1.2 V ~ 3.6 V	1.65 V ~ 5.5 V	100 Mbps	-40°C ~ 85°C	8-MSOP	Obsolete
74AVC2T45DC-Q100H	Nexperia USA	Voltage Level	2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500 Mbps	-40°C ~ 125°C	8-VSSOP	Active
74AVC2T45DP,125	Nexperia USA	Voltage Level	2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500 Mbps	-40°C ~ 125°C	8-TSSOP	Active
74AVC2T45DP-Q100H	Nexperia USA	Voltage Level	2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500 Mbps	-40°C ~ 125°C	8-TSSOP	Active
74AVC2T45GS,115	NXP USA	Voltage Level	2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500 Mbps	-40°C ~ 125°C	8-XSON	Active
74AVCH2T45GF,115	Nexperia USA	Voltage Level	2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500 Mbps	-40°C ~ 125°C	8-XSON	Obsolete
74AVCH2T45GN,115	NXP Semiconductors	Voltage Level	2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500 Mbps	-40°C ~ 125°C	Bulk	Active
74AVCH2T45GS,115	NXP USA	Voltage Level	2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500 Mbps	-40°C ~ 125°C	8-XSON	Active
74LVC2T45DC,125	Nexperia USA	Voltage Level	2	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	420 Mbps	-40°C ~ 125°C	8-VSSOP	Active
74LVC2T45GF,115	Nexperia USA	Voltage Level	2	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	420 Mbps	-40°C ~ 125°C	8-XSON	Obsolete
74LVC2T45GS,115	NXP USA	Voltage Level	2	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	420 Mbps	-40°C ~ 125°C	8-XSON	Active

Engineering Selection Recommendations

Primary Recommendation - 74AVC2T45DP,125 or 74AVC2T45DP-Q100H

The 74AVC2T45DP series represents the optimal substitute for the PI4ULS5V102UE. Both variants are active products with ROHS3 compliance. The 74AVC2T45DP,125 offers standard commercial-grade performance with 82,383 units in stock. The 74AVC2T45DP-Q100H variant includes AEC-Q100 automotive qualification for applications requiring automotive-grade reliability. Both parts feature the same 8-TSSOP package as the original PI4ULS5V102UE, enabling direct PCB footprint compatibility. The 500 Mbps data rate exceeds the original 100 Mbps specification, providing performance headroom for future design iterations.

Secondary Recommendation - 74LVC2T45DC,125 or 74LVC2T45GS,115

The 74LVC2T45 series provides an alternative for applications where voltage range flexibility is prioritized. The 74LVC2T45DC,125 in 8-VSSOP package and 74LVC2T45GS,115 in 8-XSON package are both active products with ROHS3 compliance. These parts support symmetric voltage ranges (1.2 V ~ 5.5 V for both VCCA and VCCB), offering greater flexibility than the original asymmetric voltage specification. The 420 Mbps data rate meets the original 100 Mbps requirement with adequate margin.

Automotive Applications

For automotive-grade designs, select 74AVC2T45DP-Q100H or equivalent AEC-Q100 qualified variants to ensure compliance with automotive reliability standards.

Frequently Asked Questions (FAQ)

Q: Can the 74AVC2T45 series directly replace the PI4ULS5V102UE?

A: Yes, the 74AVC2T45DP,125 and 74AVC2T45DP-Q100H are direct substitutes. Both feature identical bidirectional 2-channel architecture, tri-state non-inverted output configuration, and 8-TSSOP package compatibility. The voltage ranges are compatible: the original VCCA range (1.2 V ~ 3.6 V) and VCCB range (1.65 V ~ 5.5 V) fall within the 74AVC2T45 symmetric range (0.8 V ~ 3.6 V). The 500 Mbps data rate exceeds the original 100 Mbps specification.

Q: What is the difference between 74AVC2T45DP,125 and 74AVC2T45DP-Q100H?

A: Both parts are electrically identical with the same performance specifications. The primary difference is qualification: 74AVC2T45DP-Q100H includes AEC-Q100 automotive qualification, making it suitable for automotive applications requiring formal reliability certification. Select the -Q100H variant for automotive designs; use the standard variant for general-purpose applications.

Q: Why does the 74LVC2T45 series have symmetric voltage ranges while the original PI4ULS5V102UE has asymmetric ranges?

A: The 74LVC2T45 series is designed with symmetric voltage support (1.2 V ~ 5.5 V for both VCCA and VCCB), providing greater design flexibility. The original PI4ULS5V102UE specified asymmetric ranges (VCCA 1.2 V ~ 3.6 V, VCCB 1.65 V ~ 5.5 V). The 74LVC2T45 symmetric specification encompasses the original asymmetric ranges, ensuring compatibility while enabling broader application support.

Q: What package options are available for substitutes?

A: Substitute parts are available in multiple packages: 8-TSSOP (direct footprint match to original), 8-VSSOP (smaller footprint), and 8-XSON (compact form factor). Select 8-TSSOP for direct PCB compatibility without layout changes. Choose 8-VSSOP or 8-XSON variants only if PCB redesign is acceptable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all active substitute parts listed are ROHS3 compliant. Verify compliance documentation for specific procurement batches if required for regulated applications.

Q: What is the inventory status for substitute parts?

A: The 74AVC2T45DP,125 has the highest inventory availability (82,383 units). The 74AVC2T45GS,115 and 74AVCH2T45GS,115 also maintain substantial stock levels (125,644 and 86,947 units respectively). Verify current inventory with your supplier for time-sensitive procurement requirements.

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