Overview
The PCA9515ADP,118, produced by NXP USA Inc., is a CMOS integrated circuit designed for use in I2C-bus and SMBus systems. This component serves as a 2-channel, bidirectional buffer, enabling the extension of the I2C-bus by buffering both the data (SDA) and the clock (SCL) lines. This allows for the isolation of two halves of a bus, thereby supporting more devices or longer bus lengths. The PCA9515ADP is particularly useful in scenarios where different voltage levels or operating frequencies are required on different segments of the bus.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | TSSOP-8 (3.0mm Width) | 8-TSSOP, 8-MSOP |
| Supply Voltage | Operating supply voltage range | 2.3 V to 3.6 V |
| I2C-bus and Enable Pins | Voltage tolerance | 5.5 V tolerant |
| Clock Frequency | Maximum system operating frequency | 0 Hz to 400 kHz |
| Propagation Delay | HIGH to LOW propagation delay | 45 ns to 120 ns |
| Output Transition Time | HIGH to LOW output transition time | -58 ns |
| Set-up Time | EN HIGH before START condition | 100 ns |
| Hold Time | EN HIGH after STOP condition | 100 ns |
| Pin Count | Number of terminations | 8 |
| Mounting Type | Surface mount | - |
| RoHS Compliance | Environmental compliance | ROHS3 Compliant |
Key Features
- 2-channel, bidirectional buffer for I2C-bus and SMBus systems
- Active HIGH repeater enable input with internal pull-up (100 kΩ)
- Open-drain input/outputs, 5 V tolerant
- Lock-up free operation
- Supports arbitration and clock stretching across the repeater
- Accommodates Standard-mode and Fast-mode I2C-bus devices and multiple masters
- Powered-off high-impedance I2C-bus pins
Applications
The PCA9515ADP is suitable for various applications where I2C-bus or SMBus systems require extension or segmentation. This includes:
- Industrial control systems where longer bus lengths are necessary
- Automotive systems requiring isolation between different voltage domains
- Consumer electronics needing to support multiple I2C-bus devices
- Medical devices requiring reliable and isolated communication between different components
Q & A
- What is the primary function of the PCA9515ADP?
The PCA9515ADP is a 2-channel, bidirectional buffer designed to extend and isolate I2C-bus and SMBus systems. - What is the operating supply voltage range of the PCA9515ADP?
The operating supply voltage range is from 2.3 V to 3.6 V. - Is the PCA9515ADP compatible with both Standard-mode and Fast-mode I2C-bus devices?
Yes, it supports both Standard-mode and Fast-mode I2C-bus devices. - Can the PCA9515ADP be used in series with another PCA9515ADP?
No, the design does not allow for two or more PCA9515ADPs to be put in series. - What is the maximum clock frequency supported by the PCA9515ADP?
The maximum clock frequency is 400 kHz. - Is the PCA9515ADP ROHS compliant?
Yes, it is ROHS3 Compliant. - What is the package type of the PCA9515ADP?
The package type is TSSOP-8 (3.0mm Width). - Does the PCA9515ADP support arbitration and clock stretching?
Yes, it supports arbitration and clock stretching across the repeater. - What is the purpose of the active HIGH repeater enable input?
The active HIGH repeater enable input allows for the control of the repeater function with an internal pull-up resistor. - Are the I2C-bus pins high-impedance when powered off?
Yes, the I2C-bus pins are high-impedance when the device is powered off.
