TCA9545APWR Equivalent & Substitute Parts

Part Overview

The TCA9545APWR is a bus switch IC manufactured by Texas Instruments, designed for 2 x 1:4 multiplexing applications in logic circuits. This device operates as a single-supply bus switch with support for voltage ranges from 1.65V to 5.5V, making it suitable for mixed-voltage system environments. The part is currently in Active product status with substantial inventory availability (60,200 pcs). Identifying equivalent substitute parts becomes necessary when primary sourcing is constrained, when alternative packaging formats are required, or when supply chain diversification is needed for production continuity.

Substiute Parts

TCA9545APWR

Texas InstrumentsIn Stock: 60229TCA9545APWR Datasheet

Current PartRFQ

PI4MSD5V9545ALEX

Diodes IncorporatedIn Stock: 11618PI4MSD5V9545ALEX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TCA9545APWR is determined by strict alignment of the following critical parameters:

• Circuit Configuration: Must be 2 x 1:4 bus switch topology
• Package Type: Must be 20-TSSOP with identical 0.173" (4.40mm) width specification
• Voltage Supply Range: Must support 1.65V ~ 5.5V operation
• Operating Temperature Range: Must cover -40°C ~ 85°C
• Mounting Type: Must be Surface Mount
• Compliance Standards: Must maintain ROHS3 compliance and REACH Unaffected status

The PI4MSD5V9545ALEX from Diodes Incorporated meets all these criteria and qualifies as a parametric equivalent substitute. Both parts share identical electrical specifications, package dimensions, and environmental operating conditions. The primary distinction lies in product status and packaging format (Cut Tape vs. Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

TCA9545APWR is the preferred primary selection due to its Active product status, ensuring long-term availability and manufacturer support. This part carries full production commitment from Texas Instruments with 60,200 units currently in stock.

PI4MSD5V9545ALEX serves as a qualified substitute when TCA9545APWR sourcing is unavailable. This Diodes Incorporated equivalent maintains full electrical and mechanical compatibility. However, note that PI4MSD5V9545ALEX carries Last Time Buy status, indicating this product line is in end-of-life phase. Selection of this substitute should account for potential future availability constraints. The packaging format differs (Tape & Reel vs. Cut Tape), which may affect procurement workflows but does not impact functional performance or PCB assembly compatibility.

Both parts satisfy identical compliance requirements (ROHS3, REACH Unaffected, EAR99 classification) and are suitable for applications requiring 2 x 1:4 bus switching in 1.65V to 5.5V supply environments across the -40°C to 85°C operating range.

Frequently Asked Questions (FAQ)

Q: Can PI4MSD5V9545ALEX be used as a direct replacement for TCA9545APWR in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. Pin configuration, voltage ratings, temperature range, and package dimensions are equivalent. Direct PCB substitution is supported without design modification.

Q: What is the significance of the different product statuses (Active vs. Last Time Buy)?

A: Active status indicates Texas Instruments continues full production of TCA9545APWR with indefinite availability. Last Time Buy status for PI4MSD5V9545ALEX signals that Diodes Incorporated has announced end-of-life for this product line. Existing inventory may be procured, but future orders cannot be guaranteed. For new designs requiring long-term component availability, TCA9545APWR is the recommended choice.

Q: Does the packaging format difference (Cut Tape vs. Tape & Reel) affect assembly compatibility?

A: Packaging format affects procurement and handling logistics but not assembly compatibility. Both formats contain identical components in the same 20-TSSOP package. Assembly equipment processes both formats identically. Selection between formats depends on production volume requirements and inventory management preferences.

Q: Are both parts suitable for mixed-voltage applications?

A: Yes. Both TCA9545APWR and PI4MSD5V9545ALEX support the full 1.65V to 5.5V supply range, enabling operation in systems with multiple voltage domains. This specification applies equally to both parts.

Q: What compliance certifications apply to both substitute parts?

A: Both parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 export classification. These certifications are identical across both manufacturers and support equivalent regulatory requirements for industrial, commercial, and consumer applications.