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PCA9536

ACTIVO

Expansor de E/S I2C/SMBus de 4 bits de 2,3 a 5,5 V con registros de configuración

Detalles del producto

Number of I/Os 4 Features Configuration registers Supply voltage (min) (V) 2.3 Supply voltage (max) (V) 5.5 Addresses 1 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
Number of I/Os 4 Features Configuration registers Supply voltage (min) (V) 2.3 Supply voltage (max) (V) 5.5 Addresses 1 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Available in the Texas Instruments NanoFree™ Package
  • Low standby current consumption of 1 µA Max
  • I2C to parallel port expander
  • Operating power-supply voltage range of 2.3 V to 5.5 V
  • 5-V Tolerant I/O ports
  • 400-kHz fast I2C bus
  • Input and output configuration register
  • Polarity inversion register
  • Internal power-on reset
  • No glitch on power up
  • Power-up with all channels configured as inputs
  • 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)
  • Available in the Texas Instruments NanoFree™ Package
  • Low standby current consumption of 1 µA Max
  • I2C to parallel port expander
  • Operating power-supply voltage range of 2.3 V to 5.5 V
  • 5-V Tolerant I/O ports
  • 400-kHz fast I2C bus
  • Input and output configuration register
  • Polarity inversion register
  • Internal power-on reset
  • No glitch on power up
  • Power-up with all channels configured as inputs
  • 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)

This 4-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families through the I2C interface [serial clock (SCL), serial data (SDA)].

The PCA9536 features 4-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active high or active low) registers. At power on, the I/Os are configured as inputs with a weak pullup to VCC. However, the system controller can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. If no signals are applied externally to the PCA9536, the voltage level is 1, or high, because of the internal pullup resistors. The data for each input or output is stored in the corresponding Input Port or Output Port register. The polarity of the Input Port register can be inverted with the Polarity Inversion register and the system controller reads all registers.

The system controller resets the PCA9536 in the event of a timeout or other improper operation by utilizing the power-on reset feature, which puts the registers in their default state and initializes the I2C/SMBus state machine.

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

This 4-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families through the I2C interface [serial clock (SCL), serial data (SDA)].

The PCA9536 features 4-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active high or active low) registers. At power on, the I/Os are configured as inputs with a weak pullup to VCC. However, the system controller can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. If no signals are applied externally to the PCA9536, the voltage level is 1, or high, because of the internal pullup resistors. The data for each input or output is stored in the corresponding Input Port or Output Port register. The polarity of the Input Port register can be inverted with the Polarity Inversion register and the system controller reads all registers.

The system controller resets the PCA9536 in the event of a timeout or other improper operation by utilizing the power-on reset feature, which puts the registers in their default state and initializes the I2C/SMBus state machine.

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

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Documentación técnica

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Tipo Título Fecha
* Data sheet PCA9536 Remote 4-Bit I2C and SMBus I/O Expander with Configuration Registers datasheet (Rev. H) PDF | HTML 28 mar 2022
Application note Understanding Transient Drive Strength vs. DC Drive Strength in CMOS Output Buffers PDF | HTML 14 may 2024
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 abr 2024
Application note I2C Dynamic Addressing 25 abr 2019
Selection guide Logic Guide (Rev. AB) 12 jun 2017
Application note Choosing the Correct I2C Device for New Designs PDF | HTML 07 sep 2016
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 dic 2015
Application note Understanding the I2C Bus PDF | HTML 30 jun 2015
Application note Maximum Clock Frequency of I2C Bus Using Repeaters 15 may 2015
Application note I2C Bus Pull-Up Resistor Calculation PDF | HTML 13 feb 2015
Application note Programming Fun Lights With TI's TCA6507 30 nov 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 jul 2004

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