PCA9534A Series

8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers

Catalog

8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers

Part	Features	Number of I/O	Supplier Device Package	Package / Case [y]	Package / Case	Package / Case [x]	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Current - Output Source/Sink [custom]	Current - Output Source/Sink [custom]	Voltage - Supply [Min]	Voltage - Supply [Max]	Interface	Output Type	Clock Frequency	Package / Case [custom]	Package / Case [custom]
Texas Instruments PCA9534ADGVR	POR	8	16-TVSOP	4.4 mm	16-TFSOP	0.173 in	85 °C	-40 °C	Surface Mount	10 mA	25 mA	2.3 V	5.5 V	I2C SMBus	Push-Pull	400 kHz
Texas Instruments PCA9534ADW	POR	8	16-SOIC	7.5 mm	16-SOIC	0.295 in	85 °C	-40 °C	Surface Mount	10 mA	25 mA	2.3 V	5.5 V	I2C SMBus	Push-Pull	400 kHz
Texas Instruments PCA9534DB	POR	8	16-SSOP		16-SSOP		85 °C	-40 °C	Surface Mount	10 mA	25 mA	2.3 V	5.5 V	I2C SMBus	Push-Pull	400 kHz	0.209 in	5.3 mm
Texas Instruments PCA9534DBR	POR	8	16-SSOP		16-SSOP		85 °C	-40 °C	Surface Mount	10 mA	25 mA	2.3 V	5.5 V	I2C SMBus	Push-Pull	400 kHz	0.209 in	5.3 mm
Texas Instruments PCA9534ADB	POR	8	16-SSOP		16-SSOP		85 °C	-40 °C	Surface Mount	10 mA	25 mA	2.3 V	5.5 V	I2C SMBus	Push-Pull	400 kHz	0.209 in	5.3 mm
Texas Instruments PCA9534APW	POR	8	16-TSSOP	4.4 mm	16-TSSOP	0.173 in	85 °C	-40 °C	Surface Mount	10 mA	25 mA	2.3 V	5.5 V	I2C SMBus	Push-Pull	400 kHz
Texas Instruments PCA9534RGVR	POR	8	16-VQFN (4x4)		16-VQFN Exposed Pad		85 °C	-40 °C	Surface Mount	10 mA	25 mA	2.3 V	5.5 V	I2C SMBus	Push-Pull	400 kHz
Texas Instruments PCA9534PWR	POR	8	16-TSSOP	4.4 mm	16-TSSOP	0.173 in	85 °C	-40 °C	Surface Mount	10 mA	25 mA	2.3 V	5.5 V	I2C SMBus	Push-Pull	400 kHz
Texas Instruments PCA9534PWRG4	POR	8	16-TSSOP	4.4 mm	16-TSSOP	0.173 in	85 °C	-40 °C	Surface Mount	10 mA	25 mA	2.3 V	5.5 V	I2C SMBus	Push-Pull	400 kHz
Texas Instruments PCA9534ADWR	POR	8	16-SOIC	7.5 mm	16-SOIC	0.295 in	85 °C	-40 °C	Surface Mount	10 mA	25 mA	2.3 V	5.5 V	I2C SMBus	Push-Pull	400 kHz

Catalog

8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers

Key Features

• Low standby current consumption of 1 µA maxI2C to Parallel port expanderOpen-drain active-low interrupt outputOperating power-supply voltage range of 2.3 V to 5.5 V5-V Tolerant I/O ports400-kHz Fast I2C busThree hardware address pins allow up to eight devices on the I2C/SMBusAllows up to 16 devices on the I2C/SMBus when used in conjunction with thePCA9534SeeSection 5for I2C Expander offeringsInput and output configuration registerPolarity inversion registerInternal power-on resetPower-up with all channels configured as InputsNo glitch on power-upNoise filter on SCL and SDA inputsLatched outputs with high-current drive maximum capability for directly driving LEDsLatch-up performance exceeds 100 mA Per JESD 78, Class IIESD protection exceeds JESD 222000-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 maxI2C to Parallel port expanderOpen-drain active-low interrupt outputOperating power-supply voltage range of 2.3 V to 5.5 V5-V Tolerant I/O ports400-kHz Fast I2C busThree hardware address pins allow up to eight devices on the I2C/SMBusAllows up to 16 devices on the I2C/SMBus when used in conjunction with thePCA9534SeeSection 5for I2C Expander offeringsInput and output configuration registerPolarity inversion registerInternal power-on resetPower-up with all channels configured as InputsNo glitch on power-upNoise filter on SCL and SDA inputsLatched outputs with high-current drive maximum capability for directly driving LEDsLatch-up performance exceeds 100 mA Per JESD 78, Class IIESD protection exceeds JESD 222000-V Human-body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-device model (C101)

Description

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. INTcan 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. INTcan 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.