Overview
The TCA6408ARGTR from Texas Instruments is a low-voltage 8-bit I2C and SMBus I/O expander designed to provide flexible and efficient I/O expansion for various applications. This device supports a wide operating power-supply voltage range from 1.65 V to 5.5 V, making it compatible with next-generation microprocessors and microcontrollers. It features bidirectional voltage-level translation, allowing seamless communication between different voltage levels on the I2C bus and P-ports.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Power-Supply Voltage Range | 1.65 V to 5.5 V |
| I2C Bus Frequency | 100 kHz (Standard-mode), 400 kHz (Fast-mode) |
| Number of I/O Bits | 8 bits |
| Standby Current Consumption | 1 µA |
| I/O Port Tolerance | 5-V Tolerant |
| Package Type | 16-pin |
| Hardware Address Pin | Allows two TCA6408A devices on the same I2C/SMBus bus |
Key Features
- I2C to Parallel port expander
- Bidirectional voltage-level translation between 1.8-V, 2.5-V, 3.3-V, and 5-V I2C bus and P-ports
- Low standby current consumption of 1 µA
- 5-V Tolerant I/O ports
- Supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies
- Hardware address pin allows two TCA6408A devices on the same I2C/SMBus bus
Applications
The TCA6408ARGTR is suitable for a variety of applications where additional I/Os are needed, such as in the expansion of switches, sensors, push-buttons, LEDs, fans, and other peripherals. It is particularly useful in systems where different voltage levels need to be translated efficiently.
Q & A
- What is the operating power-supply voltage range of the TCA6408ARGTR? The operating power-supply voltage range is from 1.65 V to 5.5 V.
- What are the supported I2C bus frequencies? The device supports both 100 kHz (Standard-mode) and 400 kHz (Fast-mode) clock frequencies.
- How many I/O bits does the TCA6408ARGTR provide? It provides 8 bits of general purpose parallel input/output (I/O) expansion.
- What is the standby current consumption of the TCA6408ARGTR? The standby current consumption is 1 µA.
- Is the TCA6408ARGTR 5-V tolerant? Yes, the I/O ports are 5-V tolerant.
- Can multiple TCA6408ARGTR devices be used on the same I2C/SMBus bus? Yes, the hardware address pin allows two TCA6408A devices on the same I2C/SMBus bus.
- What types of applications is the TCA6408ARGTR suitable for? It is suitable for applications requiring additional I/Os such as switches, sensors, push-buttons, LEDs, fans, and other peripherals.
- Does the TCA6408ARGTR support bidirectional voltage-level translation? Yes, it supports bidirectional voltage-level translation between different voltage levels on the I2C bus and P-ports.
- What is the package type of the TCA6408ARGTR? It is a 16-pin device.
- Where can I find more detailed technical documentation for the TCA6408ARGTR? Detailed technical documentation can be found on the Texas Instruments website and through datasheet downloads.
