I/O Expanders | PCA9655E

I/O 端口扩展器，I2C，16 位，远程低电压带中断

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概览

PCA9535E 通过 I2C 总线和 SMBus 提供 16 位通用并行输入/输出 (GPIO) 扩展。 PCA9535E 包括两个 8 位配置输入或输出选项；输入、输出和极性反向（有效高电平或有效低电平运行）寄存器。通电时，所有 I/O 均默认为输入。每个 I/O 均可通过写入相应的 I/O 配置位配置为输入或输出。每个输入或输出的数据均保留在其相应输入或输出寄存器中。极性反向寄存器可用于在读取寄存器时对极性进行反向。所有寄存器均可由主系统读取。 PCA9655E 提供开漏中断输出，当任何输入状态与其相应的输入端口寄存器状态不同时则会激活。该中断输出用于向主系统指示输出状态已发生改变。电源接通重置会将寄存器设置为其默认值，并启动器件状态机。 三个硬件引脚（AD0、AD1、AD2）用于配置该器件的 I2C 总线从地址。允许最多 64 个器件共享相同的 I2C 总线和 SMBus。

  • Input/output Port Expansion for Extended Addressing Capability
  • Keyboards
  • VCC Operating Range: 1.65 V to 5.5 V
  • SDA Sink Capability: 30 mA
  • 5.5 V Tolerant I/Os
  • Polarity Inversion Register
  • Active LOW Interrupt Output
  • Low Standby Current
  • Noise Filter on SCL/SDA Inputs
  • No Glitch on Powerup
  • Internal Poweron Reset
  • 64 Programmable Slave Addresses Using Three Address Pins
  • 16 I/O Pins Which Default to 16 Inputs
  • I2C SCL Clock Frequencies Supported:Standard Mode: 100 kHz/Fast Mode: 400 kHz/Fast Mode +: 1 MHz
  • ESD Performance: 2000 V Human Body Model,200 V Machine Model

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I/O

Cascadable

VCC Min (V)

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Reference Price

PCA9655EDTR2G

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Lifetime

CAD Model

Pb

A

H

P

TSSOP-24

948H-01

1

260

REEL

2500

N

16

8 Slave ID Addresses

1.65

5.5

Yes

Yes

No

25

$0.714

More Details

PCA9655EDWR2G

Contact Sales

Last Shipments

CAD Model

Pb

A

H

P

SOIC−24 WB

0.0751

3

260

REEL

1000

N

16

8 Slave ID Addresses

1.65

5.5

Yes

Yes

No

25

Price N/A

More Details

PCA9655EMTTXG

Contact Sales

Last Shipments

CAD Model

Pb

A

H

P

QFN-24

485BG

1

260

REEL

3000

N

16

8 Slave ID Addresses

1.65

5.5

Yes

Yes

No

25

Price N/A

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