Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Channels | 2 bidirectional SDA/SCL-class lines |
| Protocols | I²C standard/fast/Fast-Mode Plus and SMBus; I3C compatible to 12.5 MHz stated |
| Low-Side Reference | Down to 0.9 V stated |
| High-Side Reference | 1.8 V to 5.5 V class |
| Direction | No DIR pin |
| Enable | High-impedance isolation when EN low |
| Temperature | −40°C to +125°C |
| Exact Package / Packing | VSSOP (DCU), 8 pins; 3000-piece large reel; markings 2GPT/2GVI |
Product Overview
TCA39306DCUR is the newer high-speed two-line translator for modern low-voltage I²C and I3C-adjacent buses. Its 0.9-V low-side support addresses processor domains below the practical range of older PCA9306 implementations.
TI explicitly positions it for Fast-Mode Plus I²C and I3C-compatible operation up to 12.5 MHz. That higher-speed capability still depends on bus capacitance and pull-up/driver behavior, but the device is characterized for a more demanding protocol environment.
The exact DCUR order code is a VSSOP-8 3000-piece reel rated to +125°C, giving both voltage-domain and temperature margin improvements over older bus translators.
For related devices, see HKEQGOO’s Translators, Level Shifters category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TCA39306DCUR |
| Channels | 2 bidirectional SDA/SCL-class lines |
| Protocols | I²C standard/fast/Fast-Mode Plus and SMBus; I3C compatible to 12.5 MHz stated |
| Low-Side Reference | Down to 0.9 V stated |
| High-Side Reference | 1.8 V to 5.5 V class |
| Direction | No DIR pin |
| Enable | High-impedance isolation when EN low |
| Temperature | −40°C to +125°C |
| Exact Package / Packing | VSSOP (DCU), 8 pins; 3000-piece large reel; markings 2GPT/2GVI |
| Manufacturer Status | Active / Production |
| Part Marking | 2GPT / 2GVI |
Functional Highlights
0.9-V domain support fits newer processors
Very-low-voltage controller buses can be translated directly to 1.8/3.3/5-V peripheral domains.
I3C-compatible speed expands beyond legacy 400-kHz translation
The device is appropriate when Fast-Mode Plus or I3C-class edge/timing requirements exceed older PCA9306 positioning.
Design Considerations
- Validate I3C open-drain/push-pull phases against the exact system topology and pull-up scheme.
- Keep bus capacitance within the protocol’s rise/fall budget.
- Sequence reference/bus domains so unpowered devices remain isolated as intended.
Product Status and Exact Order Code
Texas Instruments/source evidence identifies TCA39306DCUR as Active / Production; VSSOP (DCU), 8 pins; 3000-piece large tape and reel; −40°C to +125°C; markings 2GPT/2GVI.
Related Engineering Resources
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Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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