NXP PCA9534 8-Bit I2C GPIO Expander 400kHz TSSOP
NXP PCA9534 8-bit I2C GPIO expander with 5V tolerant I/Os, 400kHz, TSSOP. Ideal for sensors, LEDs, and switches.
The NXP PCA9534 is a 16-pin CMOS device that provides 8 bits of general-purpose parallel input/output (GPIO) expansion for I2C-bus and SMBus applications. It enhances NXP's family of I2C-bus I/O expanders with improved capabilities, including higher drive, 5V I/O tolerance, lower supply current, individual I/O configuration, a 400kHz clock frequency, and a compact TSSOP package.
This I/O expander offers a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, and more. It features a polarity inversion register, an active LOW interrupt output, and low standby current for efficient operation. The device includes a noise filter on SCL/SDA inputs, ensuring clean communication, and is designed to avoid glitches on power-up with an internal power-on reset.
With eight I/O pins that default to inputs, the PCA9534 is versatile and configurable. It supports a clock frequency from 0Hz up to 400kHz, making it suitable for a wide range of applications. The supply voltage range is 2.3V to 5.5V, and it operates reliably across temperatures from -40°C to 85°C.
Key Features
- 8-bit I2C-bus/SMBus GPIO expander
- 5V tolerant I/Os
- Polarity inversion register
- Active LOW interrupt output
- Low standby current
- Noise filter on SCL/SDA inputs
- Internal power-on reset (no glitch on power up)
- 8 I/O pins default to inputs
The PCA9534 comes in a 16-pin TSSOP package and is ideal for expanding I/O capabilities in embedded systems, industrial control, and consumer electronics where reliable and flexible I/O management is essential.
- No. of Bits: 8 bit
- Interfaces: I2C, SMBus
- Supply Voltage Min: 2.3 V
- Supply Voltage Max: 5.5 V
- IC Case / Package: TSSOP
- No. of Pins: 16 pins
- No. of I/O's: 8 I/Os
- Operating Temperature Min: -40 °C
- Operating Temperature Max: 85 °C
- Clock Frequency: 0 Hz to 400 kHz
- Features: 5V tolerant I/Os, polarity inversion register, active LOW interrupt output, low standby current, noise filter on SCL/SDA, internal power-on reset
- Weight: 5.443 grams
- Dimensions: 43 mm x 33 mm x 15 mm
- of Pins: 16Pins
- of I/O's: 8I/O's
- SVHC: No SVHC (27-Jun-2024)
Documents
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