PCA9306DCUTG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments PCA9306DCUTG4 is a 2-bit bidirectional I2C and SMBus voltage-level translator with open-drain outputs, supporting translation between 1.2 V and 5.5 V rails with a max propagation delay of 2.1 ns. RoHS compliant in a compact SOT-23-8 package; available from stock worldwide.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- PCA9306DCUTG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Bidirectional 2-bit voltage translation for I2C and SMBus lines between 1.2 V and 5.5 V with no direction-control pin required
- Ultra-fast maximum propagation delay of 2.1 ns ensures signal integrity at I2C Fast-mode (400 kHz) and Fast-mode Plus (1 MHz) speeds
- Open-drain output architecture compatible with standard I2C pull-up configurations; operates from 1.2 V to 5.5 V on each port independently
Applications
The PCA9306DCUTG4 is widely used in mixed-voltage embedded systems where I2C peripherals operating at 3.3 V must communicate with microcontrollers or SoCs running at 1.8 V or 1.0 V. It enables seamless integration of legacy 5 V I2C sensors with modern low-power processors in IoT gateways, mobile devices, and industrial sensor hubs. The SOT-23-8 package makes it ideal for space-constrained designs requiring voltage bridging on SCL and SDA lines.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Delay-Max | 2.1ns |
| Input Characteristics | STANDARD |
| Interface IC Type | VOLTAGE LEVEL TRANSLATOR |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Bits | 1 |
| Number of Functions | 2 |
| Output Characteristics | OPEN-DRAIN |
| Output Latch or Register | NONE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.12,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max | 3.3V |
| Supply Voltage-Min | 1.2V |
| Supply Voltage-Nom | 1.8V |
| Supply Voltage1-Max | 5.5V |
| Supply Voltage1-Min | 1.8V |
| Supply Voltage1-Nom | 2V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What voltage ranges does PCA9306DCUTG4 support on each I2C port for level shifting?
The PCA9306DCUTG4 supports independent supply voltages from 1.2 V to 5.5 V on each of its two I2C ports, allowing translation between any two voltages within that range such as 1.8 V to 3.3 V or 3.3 V to 5 V. Each port's logic threshold tracks its supply rail, enabling correct level shifting without a direction-control signal across up to 2 I2C bus lines simultaneously.
How does PCA9306DCUTG4 handle I2C bidirectional communication without a direction-control pin?
The PCA9306DCUTG4 uses open-drain output transistors that sense bus activity and automatically determine transfer direction, so no explicit direction-enable signal is needed. This makes it a drop-in two-wire translation solution on SDA and SCL lines with a propagation delay of only 2.1 ns maximum, preserving timing margins at I2C standard (100 kHz) and fast (400 kHz) modes.
In which package does PCA9306DCUTG4 come and how compact is it for space-constrained PCB layouts?
PCA9306DCUTG4 is housed in an SOT-23-8 package (JESD-30 code R-PDSO-G8), a very small 8-pin outline package with a footprint under 2 mm x 3 mm, making it one of the smallest I2C voltage translators available for 2-channel level shifting. This compact form factor fits easily on dense sensor boards and wearable electronics where PCB area is at a premium.
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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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