PCA9306DCUR-777372404 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments PCA9306DCUR is a dual bidirectional I2C and SMBus voltage-level translator supporting 1.2 V to 3.6 V on one side and 1.8 V to 5.5 V on the other in a compact SOT-23-6 or VSSOP package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- PCA9306DCUR-777372404 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PCA9306DCUR-777372404?
- Dual-channel bidirectional I2C and SMBus voltage-level translation between 1.2 V–3.6 V and 1.8 V–5.5 V rails without direction-control pins
- Automatic direction sensing on both SDA and SCL lines enables plug-and-play level shifting with no firmware changes or GPIO control signals required
- Fast-mode Plus (Fm+) I2C support up to 1 MHz bus speed, suitable for demanding multi-device I2C bus topologies in space-constrained designs
- Tiny SOT-23-6 or VSSOP-8 package occupies minimal PCB area, ideal for portable consumer electronics, wearables, and IoT sensor nodes
What is PCA9306DCUR-777372404 used for?
The PCA9306DCUR is used in mixed-voltage I2C bus systems where a 3.3 V microcontroller must communicate with 5 V legacy peripherals or 1.8 V low-power sensors on the same SDA/SCL bus without level-mismatch damage. It is commonly integrated into IoT gateway boards, smartwatch modules, and industrial sensor hubs that aggregate multiple I2C devices operating at different supply voltages. The automatic direction control eliminates the need for GPIO-driven level shifters, simplifying firmware and reducing board-level component count.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the PCA9306DCUR-777372404 datasheet?
PCA9306DCUR-777372404 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PCA9306DCUR-777372404?
Compatible alternatives and drop-in replacements for PCA9306DCUR-777372404:
Frequently Asked Questions
What voltage ranges does PCA9306DCUR support on each side of the translation bridge?
The PCA9306DCUR supports 1.2 V to 3.6 V on the VREF1 side and 1.8 V to 5.5 V on the VREF2 side, enabling bidirectional I2C translation between low-voltage 1.8 V MCUs and 3.3 V or 5 V sensors, EEPROMs, and display controllers in the same design.
Up to what I2C bus speed can the PCA9306DCUR operate?
The PCA9306DCUR supports I2C Standard mode (100 kHz), Fast mode (400 kHz), and Fast-mode Plus (Fm+) at up to 1 MHz, making it suitable for high-speed sensor aggregation and display driving scenarios where a slower 100 kHz level translator would create a communication bottleneck.
Does PCA9306DCUR require GPIO direction-control signals from a host MCU?
No. The PCA9306DCUR uses automatic open-drain sensing to detect the dominant side on each I2C line and switches direction without any firmware or GPIO control signal. This simplifies PCB routing and firmware development for designs with 2 or more I2C voltage domains sharing a single SDA/SCL pair.
Which package options are available for PCA9306DCUR and how do they compare in footprint size?
The PCA9306DCUR is available in the VSSOP-8 package, which occupies approximately 3.0 mm x 3.0 mm on the PCB. This small outline package is considerably more compact than traditional DIP or larger SOIC-8 packages, making it preferred for space-constrained IoT nodes, wearables, and handheld test instruments that integrate I2C voltage translation.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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