Firmware
TCA6408A
Expansor de E/S I2C/SMBus de 1.65 V a 5.5 V de traducción de 8 bits con registros de interrupción, r
Hoja de datos
TCA6408A
- I2C to Parallel port expander
- Operating power-supply voltage range of 1.65 V to 5.5 V
- Allows bidirectional voltage-level translation and gpio expansion 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
- 400-kHz Fast I2C bus
- Hardware address pin allows two TCA6408A Devices on the same I2C/SMBus bus
- Active-low reset ( RESET) input
- Open-drain active-low interrupt ( INT) output
- Input and output configuration register
- Polarity inversion register
- Internal power-on reset
- Power up with all channels configured as inputs
- No glitch on power up
- Noise filter on SCL and SDA inputs
- Latched outputs with high-current drive maximum capability for directly driving LEDs
- Latch-up performance exceeds 100 mA Per JESD 78, class II
- Schmitt-trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
- ESD Protection exceeds JESD 22
- 2000-V Human body model (A114-A)
- 1000-V Charged-device model (C101)
The TCA6408A is a 16-pin device that provides 8-bits of general purpose parallel input/output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol. This device can operate with a power supply voltage ranging from 1.65 V to 5.5 V on both the I2C bus side (VCCI) and on the P-port side (VCCP). This allows the TCA6408A to interface with next-generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power. In contrast to the dropping power supplies of microprocessors and microcontrollers, some PCB components such as LEDs remain at a 5-V power supply.
The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA6408A provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so forth.
Documentación técnica
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Ver todo 9 | Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | TCA6408A Low-Voltage 8-Bit I2C and SMBus I/O Expander With Interrupt Output, Reset, and Configuration Registers datasheet (Rev. E) | PDF | HTML | 30 ene 2023 |
| Application note | Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) | PDF | HTML | 03 jul 2024 | |
| Application note | I2C Dynamic Addressing | 25 abr 2019 | ||
| Application note | Choosing the Correct I2C Device for New Designs | PDF | HTML | 07 sep 2016 | |
| Selection guide | I2C Infographic Flyer | 03 dic 2015 | ||
| Application note | Understanding the I2C Bus | PDF | HTML | 30 jun 2015 | |
| Application note | Maximum Clock Frequency of I2C Bus Using Repeaters | 15 may 2015 | ||
| Application note | I2C Bus Pull-Up Resistor Calculation | PDF | HTML | 13 feb 2015 | |
| EVM User's guide | I/O Expander EVM User's Guide (Rev. A) | 25 jul 2014 |
Diseño y desarrollo
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
Placa de evaluación
IO-EXPANDER-EVM — IO-EXPANDER-EVM: Módulo de evaluación de expansión de E/S I2C y SMBus
El módulo de evaluación (EVM) de expansión de E/S le permite evaluar la cartera de dispositivos de la línea de expansión de E/S SMBus y I2C de TI . Tanto el TCA6424A como el TCA9539 están instalados en la placa. El formato TSSOP de 24 pines también admite TCA6408A, TCA6416A, TCA9534, TCA9534A, (...)
Guía del usuario: PDF
Herramienta de diseño
I2C-DESIGNER — Herramienta de diseño I2C
Use the I2C Designer tool to quickly resolve conflicts in addressing, voltage level and frequency in I2C based designs. Enter master and slave inputs to automatically generate an I2C tree or easily build a custom solution. This tool will help designers save time and comply with the I2C standard (...)
Herramienta de simulación
PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Herramienta de simulación
TINA-TI — Programa de simulación analógica basado en SPICE
TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Guía del usuario: PDF
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| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| TSSOP (PW) | 16 | Ultra Librarian |
| UQFN (RSV) | 16 | Ultra Librarian |
| VQFN (RGT) | 16 | Ultra Librarian |
Pedidos y calidad
Información incluida:
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
Información incluida:
- Lugar de fabricación
- Lugar de ensamblaje
Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.
Soporte y capacitación
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