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I2C 通用 I/O (GPIO)

TCA6408A-Q1

現行

具中斷、重設和配置暫存器的車用 8 位元轉換 I2C/SMBus I/O 擴展器

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產品規格表

TCA6408A-Q1

現行
產品規格表 立即訂購

產品詳細資料

Number of I/Os 8 Features Adjustable I/O level, Configuration registers, Interrupt pin, Reset pin Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 3.6 Addresses 2 Rating Automotive Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 125
Number of I/Os 8 Features Adjustable I/O level, Configuration registers, Interrupt pin, Reset pin Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 3.6 Addresses 2 Rating Automotive Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 125
TSSOP (PW) 16 32 mm² 5 x 6.4
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • I2C to parallel port expander
  • Operating power-supply voltage range of 1.65 V to 3.6 V
  • Allows bidirectional voltage-level translation and GPIO expansion between 1.8-, 2.5-, and 3.3-V I2C bus and P-ports
  • Low standby current consumption
  • 400-kHz Fast I2C Bus
  • Hardware address pin allows Two TCA6408A-Q1 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 meets 100 mA per AEC Q100-004
  • Schmitt-Trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
  • ESD protection
    • 2000-V Human body model (Q100-002)
    • 1000-V Charged-device model (Q100-011)
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • I2C to parallel port expander
  • Operating power-supply voltage range of 1.65 V to 3.6 V
  • Allows bidirectional voltage-level translation and GPIO expansion between 1.8-, 2.5-, and 3.3-V I2C bus and P-ports
  • Low standby current consumption
  • 400-kHz Fast I2C Bus
  • Hardware address pin allows Two TCA6408A-Q1 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 meets 100 mA per AEC Q100-004
  • Schmitt-Trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
  • ESD protection
    • 2000-V Human body model (Q100-002)
    • 1000-V Charged-device model (Q100-011)

The TCA6408A-Q1 is a 16-pin device that provides 8-bits of general purpose parallel input and 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 3.6 V on both the I2C bus side (VCCI) and on the P-port side (VCCP). This allows the TCA6408A-Q1 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 higher power supply.

The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA6408A-Q1 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so forth.

The TCA6408A-Q1 is a 16-pin device that provides 8-bits of general purpose parallel input and 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 3.6 V on both the I2C bus side (VCCI) and on the P-port side (VCCP). This allows the TCA6408A-Q1 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 higher power supply.

The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA6408A-Q1 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so forth.
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類型 標題 日期
* Data sheet TCA6408A-Q1 Low-Voltage 8-Bit I2C and SMBus I/O Expander With Interrupt Output datasheet (Rev. A) PDF | HTML 2023年 2月 6日
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 2024年 7月 3日
Functional safety information TCA6408A-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2020年 10月 29日
Application note I2C Dynamic Addressing 2019年 4月 25日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

IO-EXPANDER-EVM — IO-EXPANDER-EVM：I2C 和 SMBus IO 擴展器評估模組

IO 擴展器評估模組 (EVM) 可讓您評估 TI 的 SMBus 與 I2C IO 擴展器線路裝置產品組合。TCA6424A 和 TCA9539 都安裝在電路板上。24 針腳 TSSOP 元件封裝還支援 TCA6408A、TCA6416A、TCA9534、TCA9534A、TCA9535、TCA9538, TCA9554、TCA9554A 和 TCA9555。

使用指南: PDF
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韌體

SLVC564 — I/O Expander Software and Firmware Package

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支援產品和硬體

產品
I2C 通用 I/O (GPIO)
TCA6408A — 具中斷、重設和配置暫存器的 8 位元轉換 1.65 至 5.5-V I2C/SMBus I/O 擴展器 TCA6408A-Q1 — 具中斷、重設和配置暫存器的車用 8 位元轉換 I2C/SMBus I/O 擴展器 TCA6416A — 具中斷、重設和配置暫存器的 16 位元轉換 1.65 至 5.5-V I2C/SMBus I/O 擴展器 TCA6424A — 具中斷、重設和配置暫存器的 24 位元轉換 1.65 至 5.5-V I2C/SMBus I/O 擴展器 TCA9534 — 具中斷和配置暫存器的 8 位元 1.65 至 5.5-V I2C/SMBus I/O 擴展器 TCA9534A — 具中斷和配置暫存器的 8 位元 1.65 至 5.5-V I2C/SMBus I/O 擴展器 TCA9535 — 具中斷和配置暫存器的 16 位元 1.65 至 5.5-V I2C/SMBus I/O 擴展器 TCA9538 — 具中斷、重設和配置暫存器的 8 位元 1.65 至 5.5V I2C/SMBus I/O 擴展器 TCA9539 — 具中斷、重設和配置暫存器的 16 位元 1.65 至 5.5V I2C/SMBus I/O 擴展器 TCA9554 — 具中斷、弱推拉和配置暫存器的 8 位元 1.65 至 5.5-V I2C/SMBus I/O 擴展器 TCA9554A — 具中斷、弱推拉和配置暫存器的 8 位元 1.65 至 5.5-V I2C/SMBus I/O 擴展器 TCA9555 — 具中斷、弱推拉和配置暫存器的 16 位元 1.65 至 5.5-V I2C/SMBus I/O 擴展器
硬體開發
開發板
IO-EXPANDER-EVM — IO-EXPANDER-EVM：I2C 和 SMBus IO 擴展器評估模組
下載
模擬型號

TCA6408A IBIS Model

SCPM014.ZIP (107 KB) - IBIS Model
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設計工具

I2C-DESIGNER — I2C 設計工具

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 (...)
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

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 (...)
要求
模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

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 (...)
使用指南: PDF
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參考設計

TIDA-020060 — 適用於 100/1000Base-T1 乙太網路應用的汽車數據線供電參考設計

此參考設計展現出汽車應用實例的數據線供電 (PoDL) 實作。此設計使用 DP83TG720S-Q1 1000MBit/s 單對乙太網路 (SPE) PHY，並可選擇切換至 DP83TC812S-Q1 SPE PHY 以進行 100MBit/s 運作。耦合和去耦合網路用於在 50W 的最大功率下耦合。
Design guide: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
TSSOP (PW) 16 Ultra Librarian
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