Overview
The PCA9515ADP/G-T, 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 that extends the I2C-bus by buffering both the data (SDA) and the clock (SCL) lines. This allows system designers to isolate two halves of a bus, enabling more devices or longer bus lengths without degrading system performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | 2.3 V to 3.6 V | V |
| I2C-bus and Enable Pins Tolerance | 5.5 V | V |
| Clock Frequency | 0 Hz to 400 kHz | Hz |
| Propagation Delay (HIGH to LOW) | 45 to 120 ns | ns |
| Propagation Delay (LOW to HIGH) | 33 to 180 ns | ns |
| Output Transition Time (HIGH to LOW) | - to 58 ns | ns |
| Output Transition Time (LOW to HIGH) | - to 147 ns | ns |
| Set-up Time (EN HIGH before START condition) | 100 ns | ns |
| Hold Time (EN HIGH after STOP condition) | 100 ns | ns |
| Package Type | 8-TSSOP, SO8, HWSON8 | - |
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- 2-channel, bidirectional buffer
- I2C-bus and SMBus compatible
- Active HIGH repeater enable input with internal pull-up
- Open-drain input/outputs
- 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/G-T is suitable for various applications where I2C-bus extension is necessary, such as in industrial control systems, automotive electronics, consumer electronics, and any system requiring the extension of I2C-bus lines to accommodate more devices or longer bus lengths.
Q & A
- What is the primary function of the PCA9515ADP/G-T?
The primary function is to extend the I2C-bus by buffering both the data (SDA) and the clock (SCL) lines. - What is the operating supply voltage range of the PCA9515ADP/G-T?
The operating supply voltage range is from 2.3 V to 3.6 V. - What is the maximum clock frequency supported by the PCA9515ADP/G-T?
The maximum clock frequency supported is 400 kHz. - Is the PCA9515ADP/G-T compatible with both Standard-mode and Fast-mode I2C-bus devices?
Yes, it is compatible with both Standard-mode and Fast-mode I2C-bus devices. - Can the PCA9515ADP/G-T be used to isolate two halves of an I2C-bus?
Yes, it can be used to isolate two halves of an I2C-bus. - What is the purpose of the EN pin on the PCA9515ADP/G-T?
The EN pin is an active HIGH repeater enable input that allows the user to select when the repeater is active. - Is the PCA9515ADP/G-T lock-up free?
Yes, the PCA9515ADP/G-T is designed to be lock-up free. - What are the supported package types for the PCA9515ADP/G-T?
The supported package types are 8-TSSOP, SO8, and HWSON8. - What is the operating temperature range of the PCA9515ADP/G-T?
The operating temperature range is from -40°C to +85°C. - Can multiple PCA9515ADP/G-T devices be put in series?
No, the design does not allow for multiple PCA9515ADP/G-T devices to be put in series.
