PI5C3126LE Bus Switch Equivalent & Substitute Parts

Part Overview

The PI5C3126LE is a 1 x 1:1 bus switch logic IC manufactured by Diodes Incorporated in a 14-TSSOP surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The PI5C3126LE operates with a single supply voltage of 4.5V to 5.5V and supports operating temperatures from -40°C to 85°C. Identifying compatible substitutes ensures design continuity and supply chain flexibility for applications requiring this bus switch topology.

Substiute Parts

PI5C3126LE

Diodes IncorporatedIn Stock: 2189PI5C3126LE Datasheet

Current PartRFQ

SN74CBT3125CPW

Texas InstrumentsIn Stock: 924SN74CBT3125CPW Datasheet

DirectRFQ

SN74CBT3126PWR

Texas InstrumentsIn Stock: 5158SN74CBT3126PWR Datasheet

MFR RecommendedRFQ

SN74CBT3125PW

Texas InstrumentsIn Stock: 1255SN74CBT3125PW Datasheet

Parametric EquivalentRFQ

SN74CBT3126PW

Texas InstrumentsIn Stock: 3449SN74CBT3126PW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PI5C3126LE are qualified based on strict electrical and mechanical parameter alignment. The following criteria determine substitutability:

Critical Matching Parameters:

• Circuit configuration: 1 x 1:1 topology with 4 independent circuits
• Voltage supply range: 4.5V ~ 5.5V single supply operation
• Operating temperature range: -40°C ~ 85°C
• Package type: 14-TSSOP surface mount
• Physical dimensions: 0.173" width, 4.40mm width
• Compliance: ROHS3 Compliant, REACH Unaffected

All substitute parts listed maintain identical electrical specifications and mechanical compatibility with the PI5C3126LE. Substitutes are differentiated by manufacturer (Texas Instruments), product status (Active or Last Time Buy), and packaging format (Tape & Reel or Tube).

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74CBT3126PWR

The SN74CBT3126PWR is the manufacturer-recommended substitute for the PI5C3126LE. This Texas Instruments part maintains active product status, ensuring long-term availability and supply chain stability. It is supplied in Tape & Reel packaging format and carries ROHS3 compliance with REACH Unaffected status, matching the regulatory requirements of the original part.

Secondary Recommendations: SN74CBT3125CPW and SN74CBT3126PW

Both SN74CBT3125CPW and SN74CBT3126PW are parametric equivalents with identical electrical and mechanical specifications. SN74CBT3125CPW maintains active product status and is available in Tube packaging. SN74CBT3126PW is designated Last Time Buy status, indicating limited future availability. Both parts satisfy ROHS3 compliance and REACH Unaffected requirements.

Tertiary Option: SN74CBT3125PW

The SN74CBT3125PW is a parametric equivalent with Last Time Buy status. While electrically and mechanically compatible, its discontinued status makes it suitable only for applications where immediate procurement is feasible and long-term supply is not critical.

Selection Criteria:

For new designs and long-term production, select SN74CBT3126PWR (Active status). For existing inventory management or short-term applications, SN74CBT3125CPW or SN74CBT3126PW are acceptable alternatives. All recommended substitutes maintain identical compliance certifications and operating parameters as the PI5C3126LE.

Frequently Asked Questions (FAQ)

Q: Can SN74CBT3126PWR be used as a direct replacement for PI5C3126LE?

A: Yes. The SN74CBT3126PWR is electrically and mechanically identical to the PI5C3126LE. Both parts feature 1 x 1:1 bus switch topology with 4 independent circuits, operate at 4.5V to 5.5V single supply, support -40°C to 85°C temperature range, and use 14-TSSOP surface mount packaging. Pin-for-pin compatibility is maintained.

Q: What is the difference between SN74CBT3126PWR and SN74CBT3126PW?

A: Both parts are parametrically identical. The primary difference is packaging format: SN74CBT3126PWR is supplied in Tape & Reel format, while SN74CBT3126PW is supplied in Tube format. SN74CBT3126PWR maintains Active product status, whereas SN74CBT3126PW is Last Time Buy. For new designs, SN74CBT3126PWR is preferred.

Q: Are SN74CBT3125 series parts compatible with PI5C3126LE?

A: Yes. Both SN74CBT3125PW and SN74CBT3125CPW are parametric equivalents with identical circuit configuration, voltage supply range, operating temperature, and package specifications. All three parts (SN74CBT3125PW, SN74CBT3125CPW, and the PI5C3126LE) are functionally interchangeable in 1 x 1:1 bus switch applications.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR) and Tube packaging formats do not affect electrical performance or functional characteristics. The choice between SN74CBT3126PWR (Tape & Reel) and SN74CBT3126PW (Tube) depends on procurement volume and assembly line requirements, not circuit performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—SN74CBT3126PWR, SN74CBT3126PW, SN74CBT3125PW, and SN74CBT3125CPW—are ROHS3 Compliant with REACH Unaffected status, matching the regulatory compliance of the PI5C3126LE.

Q: What does "Last Time Buy" status mean for SN74CBT3126PW and SN74CBT3125PW?

A: Last Time Buy status indicates that Texas Instruments has announced end-of-life for these parts. While currently available, future procurement may be limited or unavailable. For applications requiring long-term supply assurance, SN74CBT3126PWR (Active status) is the recommended choice.

Q: Can I mix different substitute parts in the same design?

A: Yes. All substitute parts maintain identical electrical and mechanical specifications, allowing them to be used interchangeably within the same circuit design. However, for production consistency and supply chain management, using a single part number is recommended.