PI4ULS3V08MZLE Equivalent & Substitute Parts

Part Overview

The PI4ULS3V08MZLE is a voltage level translator manufactured by Diodes Incorporated, designed for bidirectional signal translation across different voltage domains. This device features 2 circuits with 4 channels per circuit, supporting data rates up to 90 Mbps with auto-direction sensing capability. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

PI4ULS3V08MZLE

Diodes IncorporatedIn Stock: 1342PI4ULS3V08MZLE Datasheet

Current PartRFQ

TXB0304RUTR

Texas InstrumentsIn Stock: 38308TXB0304RUTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PI4ULS3V08MZLE is determined by the following critical parameters:

• Translator Type & Channel Configuration: Both the main part and substitute must function as bidirectional voltage level translators with tri-state, non-inverted output capability
• Voltage Operating Range: Substitute parts must support the required VCCA and VCCB voltage ranges (minimum 1.2 V ~ 3.6 V for the main part)
• Data Rate Performance: The substitute must meet or exceed the 90 Mbps data rate requirement
• Auto-Direction Sensing: This feature must be present in substitute components
• Operating Temperature Range: Substitute parts must support -40°C ~ 85°C (TA) operation
• Compliance & Certifications: RoHS3 compliance and MSL rating must be maintained

The TXB0304RUTR from Texas Instruments qualifies as a substitute based on these parameters, despite differences in circuit count and package form factor.

Parameter Comparison

Engineering Selection Recommendations

The TXB0304RUTR is a qualified substitute for the PI4ULS3V08MZLE based on functional equivalence in core translation parameters. The substitute part offers the following advantages:

• Active Product Status: The TXB0304RUTR is an active product with established supply chain availability, addressing the obsolescence of the original part
• Enhanced Voltage Range: The substitute supports a lower minimum voltage (0.9 V vs. 1.2 V), providing greater flexibility in low-voltage applications
• Improved Data Rate: The 100 Mbps specification exceeds the original 90 Mbps requirement
• Compliance Maintenance: Both RoHS3 compliance and MSL 1 rating are preserved

Circuit design modifications may be required due to differences in circuit count (1 circuit with 4 channels in the substitute versus 2 circuits with 4 channels per circuit in the original). PCB layout adjustments are necessary due to package form factor differences (12-UFQFN versus 32-WFQFN).

Frequently Asked Questions (FAQ)

Q: Can the TXB0304RUTR directly replace the PI4ULS3V08MZLE without circuit modifications?

A: Direct pin-for-pin replacement is not possible due to different package types and circuit configurations. The PI4ULS3V08MZLE provides 2 independent circuits, while the TXB0304RUTR provides 1 circuit. Circuit redesign is required to accommodate this difference.

Q: What are the key compatibility factors when selecting a substitute?

A: Substitution compatibility is determined by: bidirectional translation capability, tri-state non-inverted output, matching voltage operating ranges, data rate performance, auto-direction sensing feature, and operating temperature range. All these parameters must align with the original design requirements.

Q: Does the TXB0304RUTR meet the voltage requirements of the original design?

A: Yes. The TXB0304RUTR supports 0.9 V ~ 3.6 V for both VCCA and VCCB, which encompasses the original part's 1.2 V ~ 3.6 V range. Designs operating at voltages below 1.2 V will benefit from the extended lower voltage capability.

Q: Are there compliance or certification differences between these parts?

A: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) rating. No compliance degradation occurs with this substitution.

Q: What package considerations apply to this substitution?

A: The original part uses a 32-WFQFN (3x6) package, while the substitute uses a 12-UFQFN (1.7x2) package. PCB layout, thermal management, and routing strategies must be re-evaluated for the smaller substitute package.