PCA9306DC,125 Equivalent & Substitute Parts

Part Overview

The PCA9306DC,125 is a bidirectional voltage level translator manufactured by NXP USA Inc., designed to interface logic circuits operating at different voltage levels. This device translates signals between 1 V ~ 3.6 V (VCCA) and 1.8 V ~ 5.5 V (VCCB) with auto-direction sensing capability. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring this functionality.

Key Parameters

Parameter	Value
Translator Type	Voltage Level
Channel Type	Bidirectional
Number of Circuits	1
Channels per Circuit	2
Voltage - VCCA	1 V ~ 3.6 V
Voltage - VCCB	1.8 V ~ 5.5 V
Output Type	Open Drain
Operating Temperature	-40°C ~ 105°C (TA)
Features	Auto-Direction Sensing
Package / Case	8-VFSOP (0.091", 2.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the PCA9306DC,125 is determined by the following critical parameters: translator type (voltage level), channel type (bidirectional), number of circuits (1), channels per circuit (2), voltage ranges (VCCA: 1 V ~ 3.6 V, VCCB: 1.8 V ~ 5.5 V), output type (open drain), operating temperature range (-40°C ~ 105°C), and package compatibility (8-VFSOP).

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts maintaining identical electrical specifications and the same base product number (PCA9306) with different packaging or product status variations.

Direct Manufacturer Alternatives: Parts from different manufacturers (Texas Instruments, onsemi) or alternative logic families (74AVC, 74LVC series) that provide equivalent bidirectional voltage translation functionality with comparable voltage ranges and operating temperatures, though with potential variations in output type, data rate, or package form factor.

Parameter Comparison

Part Number	Manufacturer	Product Status	VCCA Range	VCCB Range	Output Type	Operating Temp	Package	Packaging Type
PCA9306DC,125	NXP USA Inc.	Obsolete	1 V ~ 3.6 V	1.8 V ~ 5.5 V	Open Drain	-40°C ~ 105°C	8-VFSOP	Tube
PCA9306DC1Z	NXP USA Inc.	Active	1 V ~ 3.6 V	1.8 V ~ 5.5 V	Open Drain	-40°C ~ 105°C	8-VFSOP	Tape & Reel
PCA9306DCUR	Texas Instruments	Active	1.2 V ~ 3.3 V	1.8 V ~ 5.5 V	Open Drain, Push-Pull	-40°C ~ 105°C	8-VFSOP	Cut Tape & Digi-Reel
PCA9306IDCURQ1	Texas Instruments	Active	1.2 V ~ 3.3 V	1.8 V ~ 5.5 V	Open Drain, Push-Pull	-40°C ~ 85°C	8-VFSOP	Cut Tape & Digi-Reel
PCA9306USG	onsemi	Obsolete	1 V ~ 3.6 V	1.8 V ~ 5.5 V	Open Drain	-55°C ~ 125°C	8-VFSOP	Cut Tape & Digi-Reel
74AVC2T245GUX	Nexperia USA Inc.	Active	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	3-State	-40°C ~ 125°C	10-XQFN	Tape & Reel
74AVC2T45DP,125	Nexperia USA Inc.	Active	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	Tri-State, Non-Inverted	-40°C ~ 125°C	8-TSSOP	Tape & Reel
74AVC2T45GN,115	NXP USA Inc.	Active	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	Tri-State, Non-Inverted	-40°C ~ 125°C	8-XSON	Bulk
74AVCH2T45GN,115	NXP Semiconductors	Active	Not specified	Not specified	Not specified	Not specified	Not specified	Bulk
74LVC2T45GN,115	Nexperia USA Inc.	Active	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	Tri-State, Non-Inverted	-40°C ~ 125°C	8-XSON	Tape & Reel
74LVCH2T45GN,115	NXP Semiconductors	Active	Not specified	Not specified	Not specified	Not specified	Not specified	Bulk

Engineering Selection Recommendations

For direct replacement of the obsolete PCA9306DC,125, the PCA9306DC1Z is the primary equivalent, maintaining identical electrical specifications and package form factor while offering active product status and tape & reel packaging for production environments.

The PCA9306DCUR and PCA9306IDCURQ1 from Texas Instruments provide active alternatives with the same base product number and package, though with narrower VCCA voltage range (1.2 V ~ 3.3 V) and extended output type capability. The PCA9306IDCURQ1 includes automotive qualification (AEC-Q100) and reduced operating temperature range (-40°C ~ 85°C).

The PCA9306USG from onsemi maintains the original voltage specifications and open drain output but is also obsolete. This part offers extended operating temperature range (-55°C ~ 125°C) compared to the original.

The 74AVC and 74LVC series from Nexperia and NXP provide alternative bidirectional translation architectures with different output types (tri-state instead of open drain) and symmetric voltage ranges. These are suitable where the specific voltage asymmetry of the PCA9306 is not required. The 74AVC series supports 0.8 V ~ 3.6 V operation with 500 Mbps data rate, while the 74LVC series supports 1.2 V ~ 5.5 V operation with 420 Mbps data rate.

All recommended substitutes maintain ROHS3 compliance and are suitable for surface mount assembly.

Frequently Asked Questions (FAQ)

Q: Can the PCA9306DC1Z directly replace the PCA9306DC,125?

A: Yes. The PCA9306DC1Z is a parametric equivalent with identical electrical specifications, voltage ranges, output type, operating temperature, and package form factor. The primary difference is packaging format (tape & reel versus tube) and active product status.

Q: What is the key difference between PCA9306 variants and 74AVC/74LVC alternatives?

A: The PCA9306 series provides asymmetric voltage translation (VCCA: 1 V ~ 3.6 V, VCCB: 1.8 V ~ 5.5 V) with open drain output and auto-direction sensing. The 74AVC and 74LVC series provide symmetric voltage ranges with tri-state output architecture. Selection depends on whether your application requires the specific voltage asymmetry and auto-direction sensing of the PCA9306.

Q: Is the PCA9306IDCURQ1 suitable for automotive applications?

A: The PCA9306IDCURQ1 includes AEC-Q100 automotive qualification and is rated for -40°C ~ 85°C operation. However, it has a narrower VCCA range (1.2 V ~ 3.3 V) compared to the original PCA9306DC,125 (1 V ~ 3.6 V). Verify voltage compatibility with your specific application before selection.

Q: What packaging options are available for active PCA9306 alternatives?

A: The PCA9306DC1Z is available in tape & reel packaging. The PCA9306DCUR and PCA9306IDCURQ1 are available in cut tape & Digi-Reel format. All maintain the 8-VFSOP package form factor.

Q: Can I use 74AVC2T45 parts as a direct substitute?

A: The 74AVC2T45 series provides bidirectional translation with comparable operating temperature range but differs in output type (tri-state versus open drain), voltage ranges (symmetric 0.8 V ~ 3.6 V), and package options (8-TSSOP or 8-XSON). Use only if your circuit design accommodates tri-state output and does not require the asymmetric voltage translation of the PCA9306.

Q: What is the data rate capability of the PCA9306DC,125?

A: Data rate is not specified in the provided parameters for the PCA9306DC,125. For applications requiring specific data rate performance, refer to the device datasheet or contact the manufacturer.

Q: Are all listed substitutes RoHS compliant?

A: All PCA9306 variants and 74AVC/74LVC alternatives listed are ROHS3 compliant. Verify specific compliance requirements for your application and supply chain.


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