NXP Semiconductors PCA9534
The PCA9534 is a16-pin CMOS device that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C/SMBus applications and was developed to enhance the Philips family of I2C I/O expanders. The improvements include higher drive capability, 5V I/O tolerance, lower supply current, individual I/O configuration, 400 kHz clock frequency, and smaller packaging. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits.| Part No. | PCA9534 |
|---|---|
| Datasheet | PCA9534 Download |
| Manufacturer |  NXP Semiconductors |
| Description | 8-bit I2C and SMBus/ low power I/O port |
| Buy | Stock & Price |
DESCRIPTION
I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, pushbuttons, LEDs, fans, etc.FEATURES
● 8-bit I2C GPIO● Operating power supply voltage range of 2.3 V to 5.5 V
● 5 V tolerant I/Os
● Polarity inversion register
● Active low interrupt output
● Low stand-by current
● Noise filter on SCL/SDA inputs
● No glitch on power-up
● Internal power-on reset
● 8 I/O pins which default to 8 inputs
● 0 kHz to 400 kHz clock frequency
● ESD protection exceeds 2000 V HBM per JESD22-A114,
● Latch-up testing is done to JESDEC Standard JESD78 which
● Offered in three different packages: SO16, TSSOP16, and HVQFN16 exceeds 100 mA 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101 The PCA9534 consist of an 8-bit Configuration register (Input or Output selection); 8-bit Input register, 8-bit Output register and an 8-bit Polarity inversion register (Active HIGH or Active LOW operation). The data for each Input or Output is kept in the corresponding Input or Output register.
