Texas Instruments TCA9535RTWR
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 24-WFQFN Exposed Pad |
| Interface | I²C, SMBus |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C |
| Output Type | Push-Pull |
| Supplier Device Package | 24-WQFN (4x4) |
| Number of I/O | 16 |
| Voltage - Supply | 1.65V ~ 5.5V |
| Clock Frequency | 400 kHz |
| Current - Output Source/Sink | 10mA, 25mA |
| Interrupt Output | Yes |
| Features | POR |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | TCA9535 |
| REACH Status | REACH Unaffected |
| Standard Package | 3,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
Texas Instruments TCA9535RTWR: I/O expander
The Texas Instruments TCA9535RTWR is a low-power, 16-bit I/O expander designed for I2C and SMBus applications. It provides 16 bits of general-purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus or SMBus protocol. The device operates within a wide power supply voltage range of 1.65 V to 5.5 V and supports up to 400 kHz fast I2C bus communication. Housed in a 24-pin WQFN package, the TCA9535RTWR is ideal for applications requiring efficient I/O expansion with minimal power consumption.
TCA9535RTWR Features
The TCA9535RTWR features a comprehensive set of capabilities tailored for versatile use. It includes two 8-bit configuration registers for input/output selection, input port, output port, and polarity inversion registers, allowing flexible management of I/O states. The device supports 5-V tolerant I/O ports, ensuring compatibility with a wide range of systems. Additionally, it offers an open-drain active-low interrupt output, which can notify the system controller of input state changes without continuous I2C bus communication. The TCA9535RTWR also features high-current drive capability for directly driving LEDs, making it suitable for applications requiring visual indicators. Its low standby current consumption of 3 µA maximizes energy efficiency.
TCA9535RTWR Applications
The TCA9535RTWR is suitable for a variety of applications where I/O expansion is needed but space and power are limited. It is commonly used in servers, routers, personal computers, and personal electronics such as gaming consoles. Its ability to support up to eight devices on the same I2C bus makes it ideal for industrial automation and products with GPIO-limited processors. The device’s robustness, with ESD protection exceeding 2000 V (Human-Body Model) and 1000 V (Charged-Device Model), ensures reliable operation in demanding environments.
Advantages of Choosing TCA9535RTWR
Selecting the TCA9535RTWR offers several advantages. Its wide operating voltage range and low power consumption make it suitable for battery-powered and energy-sensitive applications. The device’s ability to directly drive LEDs without additional components simplifies design and reduces overall system cost. Additionally, its interrupt output feature enhances system responsiveness by allowing the microcontroller to react immediately to input changes without constant polling. The TCA9535RTWR also benefits from Texas Instruments’ stringent quality standards, ensuring high reliability and compatibility with various microcontroller families.
