8-bit I2C-Bus and SMBus I/O Port with Interrupt, PI4IOE5V9554 Replace CAT9554.
PI4IOE5V9554 PI4IOE5V9554.pdf
FEATURES

• Operation Power Supply Voltage from 2.3V to 5.5 V

• 8-bit I2
C-bus GPIO with Interrupt and Reset
 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)
 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 Three Different Packages:
  TSSOP-16 and TQFN 3x3-16



PIN CONFIGUTION
CROSS
CAT9554 CAT9554.pdf

No.14258

FEATURES

• 400 kHz I2C Bus Compatible (Note 1)

• 2.3 V to 5.5 V Operation
• Low Stand−by Current
• 5 V Tolerant I/Os
• 8 I/O Pins that Default to Inputs at Power−up
• High Drive Capability
• Individual I/O Configuration
• Polarity Inversion Register
• Active Low Interrupt Output
• Internal Power−on Reset
• No Glitch on Power−up
• Noise Filter on SDA/SCL Inputs
• Cascadable up to 8 Devices
• Industrial Temperature Range
• 16−lead SOIC and TSSOP, and 16−pad TQFN (4 x 4 mm) Packages
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
  Compliant
PIN CONFIGUTION
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