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PCA9535CD数据手册恩XP中文资料规格书

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厂商型号

PCA9535CD

功能描述

16-bit I2C-bus and SMBus, low power I/O port with interrupt

制造商

恩XP 恩XP

中文名称

N智浦

数据手册

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更新时间

2025-8-11 15:29:00

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PCA9535CD规格书详情

描述 Description

The PCA9535 and PCA9535C are 24-pin CMOS devices that provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I²C-bus/SMBus applications and was developed to enhance the NXP 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, 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, etc.
The PCA9535 and PCA9535C consist of two 8-bit Configuration (Input or Output selection), Input, Output and Polarity Inversion (active HIGH or active LOW operation) registers. 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 or Output 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 PCF8575, software changes are required due to the enhancements and are discussed in Application Note AN469.
The PCA9535 is identical to the PCA9555 except for the removal of the internal I/O pull-up resistor which greatly reduces power consumption when the I/Os are held LOW.
The PCA9535C is identical to the PCA9535 except that all the I/O pins are high-impedance open-drain outputs.
The PCA9535 and PCA9535C 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 fixed I2C-bus address of the PCA9535 and PCA9535C are the same as the PCA9555 allowing up to eight of these devices in any combination to share the same I2C-bus/SMBus.

特性 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
• 16 I/O pins which default to 16 inputs
• 0 Hz to 400 kHz clock frequency
• ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
• Offered in four different packages: SO24, TSSOP24, HVQFN24 and HWQFN24

供应商 型号 品牌 批号 封装 库存 备注 价格
恩XP
22+
24SO
9000
原厂渠道,现货配单
询价
恩XP
23+
NA
20094
正纳10年以上分销经验原装进口正品做服务做口碑有支持
询价
恩XP
23+
SOP24
87845
原厂授权一级代理,专业海外优势订货,价格优势、品种
询价
恩XP
24+
SOP24
2100
只做原厂渠道 可追溯货源
询价
恩XP
22+
SOP
25000
只做原装进口现货,专注配单
询价
ADI
23+
SOP24
8000
只做原装现货
询价
ADI
23+
SOP24
7000
询价
恩XP
2022+
原厂原包装
8600
全新原装 支持表配单 中国著名电子元器件独立分销
询价
N智浦
22+
NA
500000
万三科技,秉承原装,购芯无忧
询价
恩XP
22+
SOP
25000
只做原装进口现货,专注配单
询价