PI4MSD5V9545ALEX Equivalent & Substitute Parts

Part Overview

The PI4MSD5V9545ALEX is a Bus Switch 2 x 1:4 logic integrated circuit manufactured by Diodes Incorporated in a 20-TSSOP surface mount package. This component functions as a multiplexer/demultiplexer for digital signal routing in single supply applications. The part is currently in Last Time Buy status, making identification of active equivalent and substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

PI4MSD5V9545ALEX

Diodes IncorporatedIn Stock: 11618PI4MSD5V9545ALEX Datasheet

Current PartRFQ

PI4MSD5V9545BLEX

Diodes IncorporatedIn Stock: 653PI4MSD5V9545BLEX Datasheet

Parametric EquivalentRFQ

PI4MSD5V9545CLEX

Diodes IncorporatedIn Stock: 861PI4MSD5V9545CLEX Datasheet

Parametric EquivalentRFQ

TCA9545APWR

Texas InstrumentsIn Stock: 60229TCA9545APWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PI4MSD5V9545ALEX are qualified based on the following critical parameters that must match exactly:

• Circuit configuration: 2 x 1:4 bus switch topology
• Package type: 20-TSSOP surface mount
• Voltage supply range: 1.65V ~ 5.5V single supply
• Operating temperature range: -40°C ~ 85°C
• Mounting type: Surface mount
• RoHS3 compliance and MSL 1 rating

All identified substitutes maintain identical electrical specifications and physical packaging, ensuring direct functional equivalence in circuit applications. Substitution is valid across manufacturers when these parameters align.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using PI4MSD5V9545ALEX, the following substitutes are available based on product status and compliance:

Primary Substitutes (Diodes Incorporated):

• PI4MSD5V9545BLEX: Active product status with 618 pcs inventory available
• PI4MSD5V9545CLEX: Active product status with 817 pcs inventory available

Both Diodes Incorporated variants maintain identical electrical and mechanical specifications with active manufacturing status, providing continuity within the same manufacturer ecosystem.

Cross-Manufacturer Substitute (Texas Instruments):

• TCA9545APWR: Active product status with 60200 pcs inventory available

The TCA9545APWR from Texas Instruments provides equivalent functionality with significantly higher inventory availability. All three substitutes maintain ROHS3 compliance and identical parametric specifications required for direct circuit substitution.

Frequently Asked Questions (FAQ)

Q: Can PI4MSD5V9545BLEX and PI4MSD5V9545CLEX be used interchangeably with PI4MSD5V9545ALEX?

A: Yes. Both parts share identical circuit configuration (2 x 1:4), package type (20-TSSOP), voltage supply range (1.65V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and all compliance certifications. The primary difference is product status: the original part is Last Time Buy while the substitutes are Active.

Q: Is the TCA9545APWR from Texas Instruments a direct substitute?

A: Yes. The TCA9545APWR meets all parametric requirements: identical 2 x 1:4 circuit configuration, 20-TSSOP package, 1.65V ~ 5.5V supply voltage, -40°C ~ 85°C operating temperature, and ROHS3 compliance. Cross-manufacturer substitution is valid when these parameters align.

Q: What are the critical parameters that determine substitutability?

A: The following parameters must match for valid substitution: circuit configuration (2 x 1:4), package type (20-TSSOP), voltage supply range (1.65V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and compliance certifications (ROHS3, MSL 1).

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect substitutability?

A: No. Packaging format differences (Tape & Reel for PI4MSD5V9545ALEX versus Cut Tape & Digi-Reel for TCA9545APWR) do not affect electrical or mechanical compatibility. The component itself remains identical; only the delivery format differs.

Q: Why is PI4MSD5V9545ALEX marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing this specific part number variant. Active equivalent variants (PI4MSD5V9545BLEX, PI4MSD5V9545CLEX) and cross-manufacturer alternatives (TCA9545APWR) provide continuity for ongoing designs and procurement.