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CIRCUITOS INTEGRADOS (IC) DE I2C, I3C Y SPI
E/S de uso general (GPIO) I2C y SPI

PCA9534A

ACTIVO

Expansor de E/S I2C/SMBus de 8 bits de 2,3 a 5,5 V con registros de interrupción y configuración

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PCA9534A

ACTIVO
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Detalles del producto

Number of I/Os 8 Features Configuration registers, Interrupt pin Addresses 8 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
Number of I/Os 8 Features Configuration registers, Interrupt pin Addresses 8 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm) SOIC (DW) 16 106.09 mm² (10.3 mm × 10.3 mm) SSOP (DB) 16 48.36 mm² (6.2 mm × 7.8 mm) VQFN (RGV) 16 16 mm² (4 mm × 4 mm) TVSOP (DGV) 16 23.04 mm² (3.6 mm × 6.4 mm) VQFN (RGT) 16 9 mm² (3 mm × 3 mm)
  • 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 Section 5 for I2C Expander offerings
  • Input and 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 and 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)
  • 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 Section 5 for I2C Expander offerings
  • Input and 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 and 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)

The PCA9534A and PCA9534 are identical, except for their fixed I2C address. This allows for up to 16 of these devices (8 of each) on the same I2C bus.

INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via the I2C bus. Thus, the PCA9534A can remain a simple slave device.

The device’s outputs (latched) have high-current drive capability for directly driving LEDs. It has low current consumption.

Three hardware pins (A0, A1, and A2) are used to program and vary the fixed I2C address and allow up to eight devices to share the same I2C bus or SMBus.

The PCA9534A is pin-to-pin and I2C address compatible with the PCF8574A. However, software changes are required due to the enhancements in the PCA9534A over the PCF8574A.

The PCA9534A is a low-power version of the PCA9554A. The only difference between the PCA9534A and PCA9554A is that the PCA9534A eliminates an internal I/O pullup resistor, which dramatically reduces power consumption in the standby mode when the I/Os are held low.

The PCA9534A and PCA9534 are identical, except for their fixed I2C address. This allows for up to 16 of these devices (8 of each) on the same I2C bus.

INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via the I2C bus. Thus, the PCA9534A can remain a simple slave device.

The device’s outputs (latched) have high-current drive capability for directly driving LEDs. It has low current consumption.

Three hardware pins (A0, A1, and A2) are used to program and vary the fixed I2C address and allow up to eight devices to share the same I2C bus or SMBus.

The PCA9534A is pin-to-pin and I2C address compatible with the PCF8574A. However, software changes are required due to the enhancements in the PCA9534A over the PCF8574A.

The PCA9534A is a low-power version of the PCA9554A. The only difference between the PCA9534A and PCA9554A is that the PCA9534A eliminates an internal I/O pullup resistor, which dramatically reduces power consumption in the standby mode when the I/Os are held low.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos PCA9534A Remote 8-BIT I2C and SMBus Low-Power I/O Expander With Interrupt Output And Configuration Registers datasheet (Rev. J) PDF | HTML 11/03/2021
Nota sobre la aplicación Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 3/07/2024
Nota sobre la aplicación I2C Dynamic Addressing 25/04/2019
Nota sobre la aplicación Choosing the Correct I2C Device for New Designs PDF | HTML 7/09/2016
Nota sobre la aplicación Understanding the I2C Bus PDF | HTML 30/06/2015
Nota sobre la aplicación Maximum Clock Frequency of I2C Bus Using Repeaters 15/05/2015
Nota sobre la aplicación I2C Bus Pull-Up Resistor Calculation PDF | HTML 13/02/2015

Diseño y desarrollo

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Herramienta de diseño

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Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TSSOP (PW) 16 Ultra Librarian
SOIC (DW) 16 Ultra Librarian
SSOP (DB) 16 Ultra Librarian
VQFN (RGV) 16 Ultra Librarian
TVSOP (DGV) 16 Ultra Librarian
VQFN (RGT) 16 Ultra Librarian
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