PI3C3126QEX Equivalent & Substitute Parts

Part Overview

The PI3C3126QEX is a bus switch logic integrated circuit manufactured by Diodes Incorporated. This 1 x 1:1 bus switch is designed for signal routing and isolation applications in digital systems. The device operates from a single supply voltage between 2.3V and 3.6V, making it suitable for low-voltage logic applications. With an active product status and full RoHS3 compliance, the PI3C3126QEX remains in production. Equivalent substitute parts are identified for applications requiring alternative sourcing, inventory management, or design flexibility while maintaining identical electrical and mechanical specifications.

Substiute Parts

PI3C3126QEX

Diodes IncorporatedIn Stock: 24345PI3C3126QEX Datasheet

Current PartRFQ

SN74CB3Q3125DBQR

Texas InstrumentsIn Stock: 2768SN74CB3Q3125DBQR Datasheet

Parametric EquivalentRFQ

SN74CBTLV3125DBQR

Texas InstrumentsIn Stock: 2390SN74CBTLV3125DBQR Datasheet

Parametric EquivalentRFQ

SN74CBTLV3126DBQR

Texas InstrumentsIn Stock: 2448SN74CBTLV3126DBQR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PI3C3126QEX are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Parameters:

• Circuit configuration: 1 x 1:1 bus switch topology
• Independent circuits: 4 circuits per device
• Voltage supply range: 2.3V ~ 3.6V single supply operation
• Operating temperature range: -40°C ~ 85°C

Mechanical Parameters:

• Package type: 16-SSOP with 0.154" (3.90mm) width
• Mounting type: Surface mount
• Packaging format: Tape & Reel (TR)

Compliance Parameters:

• RoHS3 compliance status
• REACH unaffected status
• ECCN classification: EAR99

All three substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the PI3C3126QEX in applications requiring a 1 x 1:1 bus switch in a 16-SSOP package with the specified voltage and temperature ratings.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are functionally equivalent to the PI3C3126QEX and maintain active product status with full RoHS3 and REACH compliance. Selection among these alternatives should be based on:

Inventory Availability: The PI3C3126QEX has 24,335 units in stock. The Texas Instruments alternatives have lower inventory levels: SN74CB3Q3125DBQR (2,700 units), SN74CBTLV3125DBQR (2,344 units), and SN74CBTLV3126DBQR (2,383 units).

Moisture Sensitivity Consideration: The PI3C3126QEX carries MSL 1 (unlimited shelf life), while all Texas Instruments substitutes carry MSL 2 (1-year shelf life). This difference affects storage and handling requirements but does not impact electrical performance or functional compatibility.

Manufacturer Preference: Design teams may prefer sourcing from a single manufacturer for supply chain consistency. The PI3C3126QEX is from Diodes Incorporated, while all substitutes are from Texas Instruments.

Frequently Asked Questions (FAQ)

Q: Are the Texas Instruments parts pin-compatible with the PI3C3126QEX?

A: Yes. All substitute parts use the identical 16-SSOP package with 0.154" (3.90mm) width, ensuring direct pin-for-pin compatibility on PCBs designed for the PI3C3126QEX.

Q: What is the difference between the three Texas Instruments substitutes?

A: The SN74CB3Q3125DBQR belongs to the 74CB series, while SN74CBTLV3125DBQR and SN74CBTLV3126DBQR belong to the 74CBTLV series. All three maintain identical electrical specifications (1 x 1:1 configuration, 4 independent circuits, 2.3V–3.6V supply, -40°C to 85°C operation) and package type. The differences are in manufacturer series designation and internal design implementation, which do not affect functional equivalence.

Q: Does the MSL 2 rating of the Texas Instruments parts affect their use?

A: MSL 2 indicates a 1-year shelf life under controlled storage conditions, compared to MSL 1 (unlimited) for the PI3C3126QEX. This affects storage and handling procedures but does not impact electrical performance or reliability once the device is soldered into the application.

Q: Can these parts be used interchangeably in production?

A: Yes, all four parts meet identical electrical and mechanical specifications for the 1 x 1:1 bus switch function in a 16-SSOP package. They are suitable for direct substitution in applications requiring this circuit topology and operating range.

Q: Are there any supply voltage or temperature limitations when using substitutes?

A: No. All parts operate within the same voltage range (2.3V–3.6V) and temperature range (-40°C to 85°C), ensuring equivalent performance across the full operating envelope.