PCA9535E: I/O Port Expander, I2C, 16-bit, Low-Power w/Interrupt

The PCA9535E and PCA9535EC devices provide 16 bits of General Purpose parallel Input/Output(GPIO) expansion through the I2Cbus/SMBus. The PCA9535E and PCA9535EC consist of two 8bit Configuration Input or Output selection.Input, Output and Polarity Inversion (active HIGH or active LOW operation) registers. At power on, all I/Os default to inputs. Each I/O may be configured as either input or output by writing to its corresponding I/O configuration bit. The data for each Input or Output is kept in its corresponding Input or Output register. The Polarity Inversion register may be used to invert the polarity if the read register. All registers can be read by the system master. The PCA9535E, identical to the PCA9655E but with the internal I/O pull up resistors removed, has greatly reduced power consumption when the I/Os are held LOW. The PCA9535EC is identical to the PCA9535E but with high impedance open drain outputs at all the I/O pins. The PCA9535E and PCA9535EC provide an opendrain interrupt output which is activated when any input state differs from its corresponding input port register state. The interrupt output 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) are used to configure the I2Cbus slave address of the device. The I2Cbus slave addresses of the PCA9535E and PCA9535EC are the same as the PCA9655E. This allows up to 64 of these devices in any combination to share the same I2Cbus/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 Powerup
  • Internal Poweron Reset
  • 64 Programmable Slave Addresses using Three Address Pins
  • 16 I/O Pins which Default to 16 Inputs
Applications
  • Input/output Port Expansion for Extended Addressing Capability
Packages
Application Notes (1)
Document TitleDocument ID/SizeRevisionRevision Date
Powering-Up and Resetting the 16-Bit PCA I2C-Bus I/O ExpandersAND9169/D (177kB)0Mar, 2014
Package Drawings (3)
Document TitleDocument ID/SizeRevision
SOIC−24 WB751E-04 (53.8kB)F
TSSOP24 7.8x4.4, 0.65P948H-01 (61.1kB)B
WQFN24 4x4, 0.5P485BG (56.0kB)A
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
16-bit Low-Power I/O Expander for I2C Bus with InterruptPCA9535E/D (174kB)6
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NLVPCA9535EDTR2GActiveAEC Qualified PPAP Capable Pb-free Halide freeTSSOP-24948H-011Tape and Reel2500$0.77
NLVPCA9535EMTTXGActiveAEC Qualified PPAP Capable Pb-free Halide freeQFN-24485BG1Tape and Reel3000$0.77
PCA9535ECDTR2GActivePb-free Halide freeTSSOP-24948H-011Tape and Reel2500$0.7
PCA9535ECDWR2GActivePb-free Halide freeSOIC-24751E-043Tape and Reel1000$0.7
PCA9535ECMTTXGActivePb-free Halide freeQFN-24485BG1Tape and Reel3000$0.7
PCA9535EDTR2GActivePb-free Halide freeTSSOP-24948H-011Tape and Reel2500$0.7
PCA9535EDWR2GActivePb-free Halide freeSOIC-24751E-043Tape and Reel1000$0.7
PCA9535EMTTXGActivePb-free Halide freeQFN-24485BG1Tape and Reel3000$0.7
Specifications
ProductI/OCascadableVCC Min (V)VCC Max (V)Interrupt OutputI/O PullupsLED Blink/PWMIO Min (mA)
NLVPCA9535EDTR2G168 Slave ID Addresses1.655.5YesNoNo25
NLVPCA9535EMTTXG168 Slave ID Addresses1.655.5YesNoNo25
PCA9535ECDTR2G168 Slave ID Addresses1.655.5YesNoNo25
PCA9535ECDWR2G168 Slave ID Addresses1.655.5YesNoNo25
PCA9535ECMTTXG168 Slave ID Addresses1.655.5YesNoNo25
PCA9535EDTR2G168 Slave ID Addresses1.655.5YesNoNo25
PCA9535EDWR2G168 Slave ID Addresses1.655.5YesNoNo25
PCA9535EMTTXG168 Slave ID Addresses1.655.5YesNoNo25
16-bit Low-Power I/O Expander for I2C Bus with Interrupt (174kB) PCA9535E
Powering-Up and Resetting the 16-Bit PCA I2C-Bus I/O Expanders PCA9655E
TSSOP24 7.8x4.4, 0.65P MC74LVX4245
SOIC−24 WB MC74LVX4245
WQFN24 4x4, 0.5P PCA9655E
PCA9535E