Overview
The PCA9515ADT, produced by Texas Instruments, is a dual bidirectional I²C bus and SMBus repeater. This integrated circuit is designed to isolate two halves of an I²C bus, allowing for the connection of more I²C devices or the extension of bus trace lengths. It buffers both the serial data (SDA) and serial clock (SCL) signals, retaining all the operating modes and features of the I²C system. This component is particularly useful in applications where bus capacitance needs to be managed or where signal integrity over longer distances is critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Manufacturer Part Number | PCA9515ADT | |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | |
| Operating Temperature | -40°C ~ 85°C | °C |
| Supply Voltage | 2.3 V ~ 3.6 V | V |
| Data Rate (Max) | 400 kHz | kHz |
| Input Capacitance | 7 pF | pF |
| Supply Current | 500 μA | μA |
| Number of Channels | 1 | |
| Lead Free Status / ROHS Status | Lead Free / ROHS Compliant | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- Dual bidirectional I²C bus and SMBus repeater
- Buffers both SDA and SCL signals
- Retains all operating modes and features of the I²C system
- Supports up to 400 kHz data rate
- Operates over a supply voltage range of 2.3 V to 3.6 V
- Active-high repeater enable input (EN)
- Low input capacitance of 7 pF
- Lead-free and ROHS compliant
Applications
The PCA9515ADT is suitable for various applications requiring I²C bus extension or signal buffering, such as:
- Embedded systems where longer I²C bus lengths are necessary
- Systems with multiple I²C devices that exceed the standard bus capacitance limits
- Industrial control systems requiring reliable I²C communication over extended distances
- Consumer electronics where signal integrity on the I²C bus is critical
Q & A
- What is the primary function of the PCA9515ADT?
The PCA9515ADT is a dual bidirectional I²C bus and SMBus repeater, designed to buffer and extend I²C bus signals. - What is the maximum data rate supported by the PCA9515ADT?
The PCA9515ADT supports a maximum data rate of 400 kHz. - What is the operating temperature range of the PCA9515ADT?
The operating temperature range is -40°C to 85°C. - What is the supply voltage range for the PCA9515ADT?
The supply voltage range is 2.3 V to 3.6 V. - Is the PCA9515ADT lead-free and ROHS compliant?
Yes, the PCA9515ADT is lead-free and ROHS compliant. - What is the input capacitance of the PCA9515ADT?
The input capacitance is 7 pF. - How many channels does the PCA9515ADT support?
The PCA9515ADT supports one channel. - What is the moisture sensitivity level (MSL) of the PCA9515ADT?
The MSL is 1 (unlimited). - What package type is the PCA9515ADT available in?
The PCA9515ADT is available in an 8-SOIC package. - Can the PCA9515ADT be used in safety-critical applications?
No, it is not recommended for use in safety-critical applications without proper evaluation and approval.
