PCA9306DCURE4 Equivalent & Substitute Parts

Part Overview

The PCA9306DCURE4 is a bidirectional voltage level translator IC manufactured by Texas Instruments, designed for logic-level signal conversion between different voltage domains. This device features 1 circuit with 2 channels per circuit, supporting voltage translation from VCCA (1.2 V ~ 3.3 V) to VCCB (1.8 V ~ 5.5 V) with auto-direction sensing capability. The part is currently classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and component procurement.

Key Parameters

Parameter	Specification
Manufacturer	Texas Instruments
Base Product Number	PCA9306
Translator Type	Voltage Level
Channel Type	Bidirectional
Number of Circuits	1
Channels per Circuit	2
Voltage - VCCA	1.2 V ~ 3.3 V
Voltage - VCCB	1.8 V ~ 5.5 V
Output Type	Open Drain, Push-Pull
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the PCA9306DCURE4 are determined by equivalence across the following critical parameters:

Base product number (PCA9306)
Translator type (Voltage Level)
Channel configuration (Bidirectional, 1 circuit, 2 channels per circuit)
Voltage specifications (VCCA: 1.2 V ~ 3.3 V; VCCB: 1.8 V ~ 5.5 V)
Output type (Open Drain, Push-Pull)
Operating temperature range (-40°C ~ 105°C)
Auto-direction sensing feature
Package type (8-VFSOP)
Compliance certifications (ROHS3, MSL 1)

All substitute parts listed maintain identical electrical and mechanical specifications across these parameters, ensuring direct functional equivalence in circuit applications.

Parameter Comparison

Parameter	PCA9306DCURE4	PCA9306DCUR	PCA9306DCURG4	PCA9306DCUT
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Obsolete	Active
Translator Type	Voltage Level	Voltage Level	Voltage Level	Voltage Level
Channel Type	Bidirectional	Bidirectional	Bidirectional	Bidirectional
Number of Circuits	1	1	1	1
Channels per Circuit	2	2	2	2
Voltage - VCCA	1.2 V ~ 3.3 V	1.2 V ~ 3.3 V	1.2 V ~ 3.3 V	1.2 V ~ 3.3 V
Voltage - VCCB	1.8 V ~ 5.5 V	1.8 V ~ 5.5 V	1.8 V ~ 5.5 V	1.8 V ~ 5.5 V
Output Type	Open Drain, Push-Pull	Open Drain, Push-Pull	Open Drain, Push-Pull	Open Drain, Push-Pull
Operating Temperature	-40°C ~ 105°C (TA)	-40°C ~ 105°C (TA)	-40°C ~ 105°C (TA)	-40°C ~ 105°C (TA)
Features	Auto-Direction Sensing	Auto-Direction Sensing	Auto-Direction Sensing	Auto-Direction Sensing
Package / Case	8-VFSOP (0.091", 2.30mm Width)	8-VFSOP (0.091", 2.30mm Width)	8-VFSOP (0.091", 2.30mm Width)	8-VFSOP (0.091", 2.30mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Option	Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

For applications currently using the obsolete PCA9306DCURE4, the recommended primary substitute is PCA9306DCUR. This part maintains active product status with Texas Instruments, ensuring long-term availability and supply chain continuity. Both PCA9306DCUR and PCA9306DCUT are active alternatives that provide identical electrical and mechanical specifications.

PCA9306DCURG4 is also parametrically equivalent but carries obsolete product status, making it suitable only for legacy system maintenance where existing inventory is available. Selection between active alternatives should be based on packaging requirements and procurement logistics, as all active variants meet identical functional and compliance criteria.

All substitute parts comply with ROHS3 regulations and maintain MSL 1 classification, confirming suitability for standard manufacturing and storage conditions without moisture sensitivity constraints.

Frequently Asked Questions (FAQ)

Q: Can PCA9306DCUR directly replace PCA9306DCURE4 in existing designs?

A: Yes. Both parts share identical electrical specifications, voltage ranges, channel configuration, output types, and operating temperature range. The primary difference is product status (active vs. obsolete) and packaging format options. Direct substitution is functionally equivalent.

Q: What is the difference between PCA9306DCUR and PCA9306DCUT?

A: Both parts are parametrically identical in electrical and mechanical specifications. The difference lies in packaging format: PCA9306DCUR is available in Cut Tape (CT) and Digi-Reel® formats, while PCA9306DCUT is also available in Cut Tape (CT) and Digi-Reel® formats. Selection depends on procurement and assembly requirements.

Q: Why is PCA9306DCURE4 marked as obsolete?

A: The PCA9306DCURE4 has been discontinued by Texas Instruments. Active alternatives with identical specifications are available to support ongoing design requirements and new production runs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (PCA9306DCUR, PCA9306DCURG4, and PCA9306DCUT) are ROHS3 compliant and carry MSL 1 classification, meeting environmental and regulatory requirements.

Q: Does the 8-VFSOP package remain consistent across all substitute parts?

A: Yes. All substitute parts use the identical 8-VFSOP package (0.091", 2.30mm Width) with surface mount mounting type, ensuring PCB layout and assembly compatibility without design modifications.

Q: What voltage translation ranges are supported?

A: All parts support VCCA input voltage from 1.2 V to 3.3 V and VCCB output voltage from 1.8 V to 5.5 V, with auto-direction sensing enabling bidirectional signal translation across these voltage domains.

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