Texas Instruments PCA9534A
The PCA9534A consists of one 8-bit configuration (input or output selection), input port, output port, and polarity inversion (active high or active low) register. The data for each input or output is kept in the corresponding input or output register. The polarity of the input port register can be inverted with the polarity inversion register.| Part No. | PCA9534A |
|---|---|
| Datasheet | PCA9534A Download |
| Manufacturer |  Texas Instruments |
| Description | Remote 8-BIT I2C and SMBus Low-Power I/O Expander |
| Buy | Stock & Price |
FEATURES
●1 Low Standby Current Consumption of 1 μA Max● I2C to Parallel Port Expander
● Open-Drain Active-Low Interrupt Output
● Operating Power-Supply Voltage Range of 2.3 V to 5.5 V
● 5-V Tolerant I/O Ports
● 400-kHz Fast I2C Bus
● Three Hardware Address Pins Allow Up to Eight Devices on the I2C/SMBus
● Allows Up to 16 Devices on the I2C/SMBus When Used in Conjunction with the PCA9534 See Device Comparison Table for I2C Expander offerings
● Input/Output Configuration Register
● Polarity Inversion Register
● Internal Power-On Reset
● Power-Up With All Channels Configured as Inputs
● No Glitch on Power-Up
● Noise Filter on SCL/SDA Inputs
● Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs
● Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
● ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) 2
DESCRIPTION
This 8-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation.
