Overview
The PCA9306DC1/DG,125, produced by NXP USA Inc., is a dual bidirectional I2C-bus and SMBus voltage-level translator. This component is designed to facilitate bidirectional voltage translations between different voltage levels, ranging from 1.0 V to 3.6 V (Vref(1)) and 1.8 V to 5.5 V (Vbias(ref)(2)), without the need for a direction pin. It features an enable (EN) input and supports Standard-mode, Fast-mode, and Fast-mode Plus I2C-bus and SMBus operations. The PCA9306 is available in various package types, including VSSOP8, TSSOP8, XSON8, and X2SON8, making it versatile for different application requirements.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range (Vref(1)) | 1.0 | 3.6 | V | ||
| Input Voltage Range (Vbias(ref)(2)) | 1.8 | 5.5 | V | ||
| Propagation Delay (tPLH) | CL = 50 pF, EN = 3.3 V | 0 | 1.75 | ns | |
| Propagation Delay (tPHL) | CL = 50 pF, EN = 3.3 V | 0 | 1.0 | ns | |
| On-State Resistance (Ron) | 200 | Ω | |||
| Operating Temperature Range | -40 | 105 | °C | ||
| Package Types | VSSOP8, TSSOP8, XSON8, X2SON8 |
Key Features
- 2-bit bidirectional translator for SDA and SCL lines in mixed-mode I2C-bus applications.
- Supports Standard-mode, Fast-mode, and Fast-mode Plus I2C-bus and SMBus operations.
- Less than 1.5 ns maximum propagation delay.
- Flow-through pinout for ease of printed-circuit-board trace routing.
- Lockup-free operation for isolation when EN is low.
- ESD protection exceeds JESD 22 – 2000-V Human-body model and 1000-V Charged-device model.
- Latch-up performance exceeds 100 mA per JESD 78, class II.
Applications
- I2C, SMBus, PMBus, MDIO, UART, low-speed SDIO, GPIO, and other two-signal interfaces.
- Servers and data centers.
- Routers and telecom switching equipment.
- Personal computers.
- Industrial automation systems.
Q & A
- What is the PCA9306DC1/DG,125 used for? The PCA9306DC1/DG,125 is used as a dual bidirectional I2C-bus and SMBus voltage-level translator.
- What are the input voltage ranges for the PCA9306? The input voltage ranges are from 1.0 V to 3.6 V (Vref(1)) and 1.8 V to 5.5 V (Vbias(ref)(2)).
- What is the maximum propagation delay of the PCA9306? The maximum propagation delay is less than 1.75 ns for tPLH and 1.0 ns for tPHL under specified conditions.
- What are the package types available for the PCA9306? The PCA9306 is available in VSSOP8, TSSOP8, XSON8, and X2SON8 packages.
- What is the operating temperature range of the PCA9306? The operating temperature range is from -40°C to +105°C.
- Does the PCA9306 provide ESD protection? Yes, it provides ESD protection exceeding JESD 22 – 2000-V Human-body model and 1000-V Charged-device model.
- What are some common applications of the PCA9306? Common applications include I2C, SMBus, PMBus, MDIO, UART, low-speed SDIO, GPIO, servers, routers, personal computers, and industrial automation systems.
- How does the enable (EN) input function on the PCA9306? When EN is HIGH, the translator switch is on, connecting the SCL1 and SDA1 I/O to the SCL2 and SDA2 I/O, respectively.
- Does the PCA9306 support Fast-mode Plus I2C-bus operations? Yes, it supports Standard-mode, Fast-mode, and Fast-mode Plus I2C-bus and SMBus operations.
- What is the on-state resistance (Ron) of the PCA9306? The on-state resistance (Ron) is typically around 200 Ω.
