PCA9654E: I/O Expander, I2C / SMBus, 8-bit, with Interrupt

The PCA9654E provides 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C−bus/SMBus applications.The PCA9654E consists of 8−bit Configuration (Input or Output selection); Input, Output and Polarity Inversion (active HIGH or active LOW operation) registers. The system master may set 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.The PCA9654E open−drain interrupt (INTb) 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 (AD0, AD1, AD2) vary the fixed I2C bus address and allow up to 64 devices to share the same I2C−bus/SMBus.

Features
  • VDD 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 Power−up
  • Internal Power−on Reset
  • 64 Programmable Slave Addresses Using 3 Address Pins
  • 8 I/O Pins which Default to 8 Inputs
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
8-bit I/O Expander for I2C Bus and SMBus with InterruptPCA9654E/D (329kB)2Feb, 2015
Package Drawings (2)
Document TitleDocument ID/SizeRevision
SOIC 16 LEAD751B-05 (38.2kB)K
TSSOP-16948F-01 (41.7kB)B
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
PCA9654EDR2GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOIC-16751B-051Tape and Reel2500$0.75
PCA9654EDTR2GActiveAEC Qualified PPAP Capable Pb-free Halide freeTSSOP-16948F-011Tape and Reel2500$0.75
Specifications
ProductI/OCascadableVCC Min (V)VCC Max (V)Interrupt OutputI/O PullupsLED Blink/PWMIO Min (mA)
PCA9654EDR2G81.655.5YesYesNo8
PCA9654EDTR2G81.655.5YesYesNo8
8-bit I/O Expander for I2C Bus and SMBus with Interrupt (329kB) PCA9654E
SOIC 16 LEAD MC14504B
TSSOP-16 MC14504B