TCA9538

現行

具中斷、重設和配置暫存器的 8 位元 1.65 至 5.5-V I2C/SMBus I/O 擴展器

立即訂購

產品規格表

document-pdfAcrobat TCA9538 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset, and Configuration Registers datasheet (Rev. D) (英文) PDF | HTML

TCA9538

現行

產品規格表

立即訂購

產品詳細資料

Number of I/Os

8

Features

Configuration registers, Interrupt pin, Reset pin

Addresses

4

Rating

Catalog

Frequency (max) (MHz)

0.4

Operating temperature range (°C)

-40 to 85

Number of I/Os

8

Features

Configuration registers, Interrupt pin, Reset pin

Addresses

4

Rating

Catalog

Frequency (max) (MHz)

0.4

Operating temperature range (°C)

-40 to 85

TSSOP (PW)

16

32 mm² (5 mm × 6.4 mm)

SSOP (DB)

16

48.36 mm² (6.2 mm × 7.8 mm)

Low Standby Current Consumption
I²C to Parallel Port Expander
Open-Drain Active-Low Interrupt Output
Active-Low Reset Input
Operating Power-Supply Voltage Range of 1.65 V to 5.5 V
5-V Tolerant I/O Ports
400-kHz Fast I²C Bus
Two Hardware Address Pins Allow up to Four Devices on the I²C/SMBus
Input and Output Configuration Register
Polarity Inversion Register
Power-Up With All Channels Configured as Inputs
No Glitch on Power Up
Noise Filter on SCL/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
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)

Low Standby Current Consumption
I²C to Parallel Port Expander
Open-Drain Active-Low Interrupt Output
Active-Low Reset Input
Operating Power-Supply Voltage Range of 1.65 V to 5.5 V
5-V Tolerant I/O Ports
400-kHz Fast I²C Bus
Two Hardware Address Pins Allow up to Four Devices on the I²C/SMBus
Input and Output Configuration Register
Polarity Inversion Register
Power-Up With All Channels Configured as Inputs
No Glitch on Power Up
Noise Filter on SCL/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
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)

The TCA9538 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. The device can operate with a power supply voltage ranging from 1.65 V to 5.5 V. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA9538 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, etc.

The features of the TCA9538 include an interrupt that is generated on the INT pin whenever an input port changes state. The A0 and A1 hardware selectable address pins allow up to four TCA9538 devices on the same I²C bus. The device can also be reset to its default sate by using the RESET feature or by cycling the power supply and causing a power-on reset.

The TCA9538 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. The device can operate with a power supply voltage ranging from 1.65 V to 5.5 V. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA9538 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, etc.

The features of the TCA9538 include an interrupt that is generated on the INT pin whenever an input port changes state. The A0 and A1 hardware selectable address pins allow up to four TCA9538 devices on the same I²C bus. The device can also be reset to its default sate by using the RESET feature or by cycling the power supply and causing a power-on reset.

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現行

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重要文件	類型	標題	格式選項	日期
*	資料表	TCA9538 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset, and Configuration Registers datasheet (Rev. D)	PDF \| HTML	2016/10/10
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	應用說明	I2C Dynamic Addressing		2019/4/25
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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。