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PCA9534

AKTIV

8-Bit, 2,3- bis 5,5-V I2C/SMBus-E/A-Expander mit Interrupt- und Konfigurationsregistern

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Drop-In-Ersatz mit gegenüber dem verglichenen Baustein verbesserter Funktionalität.
TCA9534 AKTIV 8-Bit, 1,65- bis 5,5-V I2C/SMBus-E/A-Expander mit Interrupt- und Konfigurationsregistern Performance enhancements for power-on reset, interrupt, and lower voltage operation.

PCA9534

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

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
SSOP (DB) 16 48.36 mm² (6.2 mm × 7.8 mm) TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm) TVSOP (DGV) 16 23.04 mm² (3.6 mm × 6.4 mm) VQFN (RGV) 16 16 mm² (4 mm × 4 mm) SOIC (DW) 16 106.09 mm² (10.3 mm × 10.3 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 PCA9534A See Section 5 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)
  • 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 PCA9534A See Section 5 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)

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 PCA9534 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 PCA9534 is pin-to-pin and I2C address compatible with the PCF8574. However, software changes are required due to the enhancements in the PCA9534 over the PCF8574.

The PCA9534 is a low-power version of the PCA9554. The only difference between the PCA9534 and PCA9554 is that the PCA9534 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 PCA9534 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 PCA9534 is pin-to-pin and I2C address compatible with the PCF8574. However, software changes are required due to the enhancements in the PCA9534 over the PCF8574.

The PCA9534 is a low-power version of the PCA9554. The only difference between the PCA9534 and PCA9554 is that the PCA9534 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.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt PCA9534 Remote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers datasheet (Rev. H) PDF | HTML 11.03.2021
Anwendungshinweis Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 03.07.2024
Anwendungshinweis I2C Dynamic Addressing 25.04.2019
Anwendungshinweis Choosing the Correct I2C Device for New Designs PDF | HTML 07.09.2016
Anwendungshinweis Understanding the I2C Bus PDF | HTML 30.06.2015
Anwendungshinweis Maximum Clock Frequency of I2C Bus Using Repeaters 15.05.2015
Anwendungshinweis I2C Bus Pull-Up Resistor Calculation PDF | HTML 13.02.2015

Design und Entwicklung

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