16-Bit I2C-Bus and SMBus I/O Port with Interrupt, PI4IOE5V9555 Replace PCA9555PW.
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
CROSS
PCA9555PW PCA9555PW.pdf

No.14268

FEATURES

• Operating power supply voltage range of 2.3V to 5.5V

• 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 2000V HBM per JESD22-A114, 

  200V MM per JESD22-A115, and 1000V CDM per 

  JESD22-C101

• Latch-up testing is done to JEDEC Standard JESD78 which 
  exceeds 100 mA

• Five packages offered: SO24, SSOP24, TSSOP24, 

  HVQFN24 and HWQFN24


PIN CONFIGUTION
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