16-Bit I2C-Bus and SMBus I/O Port with Interrupt, PI4IOE5V9555 Replace PCA9555.
PI4IOE5V9555 PI4IOE5V9555.pdf
FEATURES

• Operation Power Supply Voltage from 2.3V to 5.5V

 16-bit I/O pins which can be programmed as Input 
  or Output
 5V Tolerant I/Os
 Polarity Inversion Register
 Active LOW Interrupt Output
 Low Current Consumption
 0Hz to 400KHz Clock Frequency
 Noise Filter on SCL/SDA Inputs
 Power-On Reset
 ESD Protection (4KV HBM and 1KV CDM)
 Latch-Up Tested (Exceeds 100mA)
 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)
 For automotive applications requiring specific change
  control
 Offered in Two Different Packages: TSSOP-24 and
  TQFN 4x4-24
PIN CONFIGUTION
优势替代
PCA9555 PCA9555.pdf

No.14266

FEATURES

• Low Standby-Current Consumption of 1 μA Max

• I2C to Parallel Port Expander
• Open-Drain Active-Low Interrupt Output
• 5-V Tolerant I/O Ports
• Compatible With Most Microcontrollers
• 400-kHz Fast I2C Bus
• Address by Three Hardware Address Pins for Use
  of up to Eight Devices
• Polarity Inversion Register
• Latched Outputs With High-Current Drive
  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)
  – 200-V Machine Model (A115-A)
  – 1000-V Charged-Device Model (C101)


PIN CONFIGUTION
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