主页 接口 I2C、I3C 和 SPI IC I2C 和 SPI 通用 I/O (GPIO)

TXE8124-Q1

预发布

具有中断、复位和 I/O 可配置寄存器的汽车级 24 位 SPI 总线 I/O 扩展器

TXE8124-Q1

预发布

产品详情

Number of I/Os 24 Features Configuration registers, Fail-safe, Interrupt pin, Reset pin Rating Automotive Frequency (max) (MHz) 10 Operating temperature range (°C) -40 to 125
Number of I/Os 24 Features Configuration registers, Fail-safe, Interrupt pin, Reset pin Rating Automotive Frequency (max) (MHz) 10 Operating temperature range (°C) -40 to 125
VSSOP (DGS) 32 39.69 mm² (8.1 mm × 4.9 mm) VQFN (RHB) 32 25 mm² (5 mm × 5 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional safety-capable
  • Operating supply voltage range of 1.65V to 5.5V
  • Low standby current consumption of 2.3µA typical
  • SPI SCLK Frequency
    • 10MHz from 3.3V to 5.5V
    • 5MHz from 1.65V to 5.5V
  • SPI daisy-chain supported
  • SPI read and write with burst mode
  • Multi-port SPI command to configure multiple ports simultaneously
  • IOFF supported input port pins
  • Active-low reset input (RESET)
  • Open-drain active-low interrupt output (INT)
    • Interrupt mask and status per I/O
    • Interrupt status per port
  • Built-in fail-safe I/O feature
  • Individual I/O configuration for
    • Input and Output function
    • Polarity inversion
    • Output push-pull and open-drain selection
    • Integrated pull-up or pull-down selection
    • Bus-hold feature to maintain last I/O state
    • Glitch filter enable selection
  • Wettable flank VQFN package
  • Latched outputs with 10mA drive capability for directly driving LEDs
  • Latch-up performance exceeds 100mA per AEC Q100-004
  • ESD protection exceeds AEC - Q100 requirements
    • 2000V Human-body model (AEC - Q100-002)
    • 1000V Charged-device model (AEC - Q100-011)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional safety-capable
  • Operating supply voltage range of 1.65V to 5.5V
  • Low standby current consumption of 2.3µA typical
  • SPI SCLK Frequency
    • 10MHz from 3.3V to 5.5V
    • 5MHz from 1.65V to 5.5V
  • SPI daisy-chain supported
  • SPI read and write with burst mode
  • Multi-port SPI command to configure multiple ports simultaneously
  • IOFF supported input port pins
  • Active-low reset input (RESET)
  • Open-drain active-low interrupt output (INT)
    • Interrupt mask and status per I/O
    • Interrupt status per port
  • Built-in fail-safe I/O feature
  • Individual I/O configuration for
    • Input and Output function
    • Polarity inversion
    • Output push-pull and open-drain selection
    • Integrated pull-up or pull-down selection
    • Bus-hold feature to maintain last I/O state
    • Glitch filter enable selection
  • Wettable flank VQFN package
  • Latched outputs with 10mA drive capability for directly driving LEDs
  • Latch-up performance exceeds 100mA per AEC Q100-004
  • ESD protection exceeds AEC - Q100 requirements
    • 2000V Human-body model (AEC - Q100-002)
    • 1000V Charged-device model (AEC - Q100-011)

The TXE8124-Q1 devices provide general purpose parallel input/output (I/O) expansion for the four wire Serial Peripheral Interface (SPI) protocol and is designed for 1.65V to 5.5V VCC operation. The TXE8124-Q1 supports both standard point-to-point communication along with daisy-chaining of multiple devices.

The device supports 10MHz from 3.3V to 5.5V and 5MHz from 1.65V to 5.5V. I/O expanders, such as the TXE8124-Q1, are designed for when additional I/Os are needed for switches, sensors, push-buttons, LEDs, and fans.

The TXE8124-Q1 devices has 3 I/O ports of 8 IOs each, which include additional features designed to enhance the I/O performance in terms of speed, power consumption, and flexibility. These include per I/O programmable open-drain or push-pull outputs, programmable pull-up and pull-down resistors, bus-hold latchable inputs, maskable interrupt, interrupt status register, glitch filter and a fail-safe register mode which is enabled by the FAIL-SAFE pin.

The TXE8124-Q1 devices provide general purpose parallel input/output (I/O) expansion for the four wire Serial Peripheral Interface (SPI) protocol and is designed for 1.65V to 5.5V VCC operation. The TXE8124-Q1 supports both standard point-to-point communication along with daisy-chaining of multiple devices.

The device supports 10MHz from 3.3V to 5.5V and 5MHz from 1.65V to 5.5V. I/O expanders, such as the TXE8124-Q1, are designed for when additional I/Os are needed for switches, sensors, push-buttons, LEDs, and fans.

The TXE8124-Q1 devices has 3 I/O ports of 8 IOs each, which include additional features designed to enhance the I/O performance in terms of speed, power consumption, and flexibility. These include per I/O programmable open-drain or push-pull outputs, programmable pull-up and pull-down resistors, bus-hold latchable inputs, maskable interrupt, interrupt status register, glitch filter and a fail-safe register mode which is enabled by the FAIL-SAFE pin.

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评估板

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评估板

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参考设计

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本参考设计展示了先进汽车级 48V 低电压电源轨架构的趋势。该设计包括 48V 主干架构及 48V 至 12V 电源转换。本参考设计重点介绍主要产品中的 48V 负载驱动器。这些产品包括高侧开关 (HSS) 和控制器 (HSSC)、智能电子保险丝及电机驱动器 (MD)。

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VSSOP (DGS) 32 Ultra Librarian
VQFN (RHB) 32 Ultra Librarian

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