PCA9554 系列 8 位 I2C-总线和 SMBus I/O 端口 带中断 - SOIC-16
Overview
The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output GPIO expansion for I²C-bus/SMBus applications and were developed to enhance the Semiconductors family of I²C-bus I/O expanders. The improvements include higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O configuration, 400 kHz clock frequency, and smaller packaging. I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, and so on.
The PCA9554/PCA9554A consist of an 8-bit Configuration register Input or Output selection; 8-bit Input Port register, 8-bit Output Port register and an 8-bit Polarity Inversion register active HIGH or active LOW operation. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input Port or Output Port register. The polarity of the read register can be inverted with the Polarity Inversion register. All registers can be read by the system master. Although pin-to-pin and I²C-bus address compatible with the PCF8574 series, software changes are required due to the enhancements and are discussed in _Application Note AN469_.
The PCA9554/PCA9554A open-drain interrupt output is activated when any input state differs from its corresponding Input Port register state and is used to indicate to the system master that an input state has changed. The power-on reset sets the registers to their default values and initializes the device state machine.
Three hardware pins A0, A1, A2 vary the fixed I²C-bus address and allow up to eight devices to share the same I²C-bus/SMBus. The PCA9554A is identical to the PCA9554 except that the fixed I²C-bus address is different allowing up to sixteen of these devices eight of each on the same I²C-bus/SMBus.
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## Features
* Operating power supply voltage range of 2.3 V to 5.5 V
* 5 V tolerant I/Os
* Polarity Inversion register
* Active LOW interrupt output
* Low standby current
* Noise filter on SCL/SDA inputs
* No glitch on power-up
* Internal power-on reset
* 8 I/O pins which default to 8 inputs
* 0 Hz to 400 kHz clock frequency
* ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
* Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
* AEC-Q100 compliance available
* Packages offered: DIP16, SO16, SSOP16, SSOP20, TSSOP16, HVQFN16 2 versions: 4 mm x 4 mm x 0.85 mm and 3 mm x 3 mm x 0.85 mm, and bare die
## Features
电源电压DC 2.30V min
输出电压 5 V
输出电流 50 mA
供电电流 85 mA
针脚数 16
时钟频率 400 kHz
耗散功率 200 mW
输入/输出数 8 Input
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 2.3V ~ 5.5V
电源电压Max 5.5 V
电源电压Min 2.3 V
输入电压 5 V
安装方式 Surface Mount
引脚数 16
封装 SOIC-16
封装 SOIC-16
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
制造应用 通信与网络, 传感与仪器, 电源管理
RoHS标准 RoHS Compliant
含铅标准 Lead Free
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
PCA9554D,118 NXP 恩智浦 | 当前型号 | 当前型号 |
PCA9554D,112 恩智浦 | 完全替代 | PCA9554D,118和PCA9554D,112的区别 |
PCF8574T 恩智浦 | 功能相似 | PCA9554D,118和PCF8574T的区别 |
PCF8574AT 恩智浦 | 功能相似 | PCA9554D,118和PCF8574AT的区别 |