Overview
The TCA9535RGER, produced by Texas Instruments, is a 16-bit I2C/SMBus I/O expander designed to provide general-purpose parallel input and output expansion for systems using the two-line bidirectional I2C bus or SMBus protocol. This device operates within a wide power supply voltage range of 1.65 V to 5.5 V, making it versatile for various applications. It features low standby-current consumption, an open-drain active-low interrupt output, and 5-V tolerant I/O ports. The TCA9535RGER is a 24-pin device available in several package types, including VQFN, and is recommended for new designs due to its active lifecycle status.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of I/Os | 16 | - |
| Operating Voltage Range | 1.65 V to 5.5 V | V |
| Operating Temperature Range | -40°C to 85°C | °C |
| I2C Clock Frequency | 400 kHz | kHz |
| Package Type | VQFN (24 pins) | - |
| Package Dimensions | 4 mm x 4 mm | mm |
| ESD Protection | 2000-V Human-Body Model, 1000-V Charged-Device Model | V |
| Standby Current | Up to 3.9 μA (VCC = 5.5 V) | μA |
Key Features
- I2C to Parallel port expander with a 400-kHz Fast I2C bus
- Wide power supply voltage range of 1.65 V to 5.5 V
- Low standby-current consumption
- Open-drain active-low interrupt output
- 5-V tolerant I/O ports
- Latched outputs with high-current drive capability for directly driving LEDs
- Polarity inversion register for active-high or active-low operation
- Address by three hardware address pins, allowing up to eight devices on the same bus
- ESD protection exceeding JESD 22 standards
Applications
- Consumer electronics
- Industrial automation
- Products with GPIO-limited processors
- Remote sensors and actuators
- LED drivers and display systems
- Keypad and button interfaces
Q & A
- What is the TCA9535RGER?
The TCA9535RGER is a 16-bit I2C/SMBus I/O expander produced by Texas Instruments. - What is the operating voltage range of the TCA9535RGER?
The device operates within a voltage range of 1.65 V to 5.5 V. - How many I/Os does the TCA9535RGER provide?
The device provides 16 bits of general-purpose parallel input and output expansion. - What is the maximum I2C clock frequency supported by the TCA9535RGER?
The device supports a maximum I2C clock frequency of 400 kHz. - What type of ESD protection does the TCA9535RGER have?
The device has ESD protection exceeding 2000-V Human-Body Model and 1000-V Charged-Device Model. - Can the TCA9535RGER drive LEDs directly?
Yes, the device has latched outputs with high-current drive capability for directly driving LEDs. - How many devices can be addressed on the same I2C bus using the TCA9535RGER?
Up to eight devices can be addressed using three hardware address pins. - What is the standby current consumption of the TCA9535RGER?
The standby current consumption is up to 3.9 μA (VCC = 5.5 V). - What are the typical applications of the TCA9535RGER?
The device is typically used in consumer electronics, industrial automation, and products with GPIO-limited processors. - What package types are available for the TCA9535RGER?
The device is available in several package types, including VQFN (24 pins).
