PCA9539 Series

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

Catalog

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

Part	Clock Frequency	Package / Case [custom]	Package / Case	Package / Case [custom]	Output Type	Current - Output Source/Sink [custom]	Current - Output Source/Sink [custom]	Features	Voltage - Supply [Min]	Voltage - Supply [Max]	Interface	Mounting Type	Number of I/O	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Package / Case	Package / Case [y]	Package / Case [y]
Texas Instruments PCA9539DWR	400 kHz	7.5 mm	24-SOIC	0.295 in	Push-Pull	10 mA	25 mA	POR	2.3 V	5.5 V	I2C SMBus	Surface Mount	16	85 °C	-40 °C	24-SOIC
Texas Instruments PCA9539PWG4	400 kHz		24-TSSOP		Push-Pull	10 mA	25 mA	POR	2.3 V	5.5 V	I2C SMBus	Surface Mount	16	85 °C	-40 °C	24-TSSOP	0.173 in 4.4 mm
Texas Instruments PCA9539PWE4	400 kHz		24-TSSOP		Push-Pull	10 mA	25 mA	POR	2.3 V	5.5 V	I2C SMBus	Surface Mount	16	85 °C	-40 °C	24-TSSOP	0.173 in 4.4 mm
Texas Instruments PCA9539PWRG4	400 kHz		24-TSSOP		Push-Pull	10 mA	25 mA	POR	2.3 V	5.5 V	I2C SMBus	Surface Mount	16	85 °C	-40 °C	24-TSSOP	0.173 in 4.4 mm
Texas Instruments PCA9539DW	400 kHz	7.5 mm	24-SOIC	0.295 in	Push-Pull	10 mA	25 mA	POR	2.3 V	5.5 V	I2C SMBus	Surface Mount	16	85 °C	-40 °C	24-SOIC
Texas Instruments PCA9539PW	400 kHz		24-TSSOP		Push-Pull	10 mA	25 mA	POR	2.3 V	5.5 V	I2C SMBus	Surface Mount	16	85 °C	-40 °C	24-TSSOP	0.173 in 4.4 mm
Texas Instruments PCA9539DBQR	400 kHz	0.154 " 3.9 mm	24-SSOP		Push-Pull	10 mA	25 mA	POR	2.3 V	5.5 V	I2C SMBus	Surface Mount	16	85 °C	-40 °C	24-SSOP
Texas Instruments PCA9539PWR	400 kHz		24-TSSOP		Push-Pull	10 mA	25 mA	POR	2.3 V	5.5 V	I2C SMBus	Surface Mount	16	85 °C	-40 °C	24-TSSOP	0.173 in 4.4 mm
Texas Instruments PCA9539DGVR	400 kHz		24-TFSOP		Push-Pull	10 mA	25 mA	POR	2.3 V	5.5 V	I2C SMBus	Surface Mount	16	85 °C	-40 °C	24-TVSOP		4.4 mm	0.173 in
Texas Instruments PCA9539PWRE4	400 kHz		24-TSSOP		Push-Pull	10 mA	25 mA	POR	2.3 V	5.5 V	I2C SMBus	Surface Mount	16	85 °C	-40 °C	24-TSSOP	0.173 in 4.4 mm

Catalog

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

Key Features

• Low standby-current consumption of 1 µA maxI2C to Parallel port expanderOpen-drain active-low interrupt outputActive-low reset input5-V Tolerant I/O portsCompatible with most microcontrollers400-kHz Fast I2C BusPolarity inversion registerAddress by two hardware address pins for use of up to four devicesLatched outputs with high-current drive 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)1000-V Charged-device model (C101)Low standby-current consumption of 1 µA maxI2C to Parallel port expanderOpen-drain active-low interrupt outputActive-low reset input5-V Tolerant I/O portsCompatible with most microcontrollers400-kHz Fast I2C BusPolarity inversion registerAddress by two hardware address pins for use of up to four devicesLatched outputs with high-current drive 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)1000-V Charged-device model (C101)

Description

The system master can reset the PCA9539 in the event of a time-out or other improper operation by asserting a low in theRESETinput. The power-on reset puts the registers in their default state and initializes the I2C/SMBus state machine. AssertingRESETcauses the same reset/initialization to occur without de-powering the part. The PCA9539 open-drain interrupt (INT) output is activated when any input state differs from its corresponding Input Port register state and is used to indicate to the system master that an input state has changed. 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 PCA9539 can remain a simple slave device. The device outputs (latched) have high-current drive capability for directly driving LEDs. The device has low current consumption. The PCA9539 is identical to the PCA9555, except for the removal of the internal I/O pullup resistor, which greatly reduces power consumption when the I/Os are held low, replacement of A2 withRESET, and a different address range. Two hardware pins (A0 and A1) are used to program and vary the fixed I2C address and allow up to four devices to share the same I2C bus or SMBus. The system master can reset the PCA9539 in the event of a time-out or other improper operation by asserting a low in theRESETinput. The power-on reset puts the registers in their default state and initializes the I2C/SMBus state machine. AssertingRESETcauses the same reset/initialization to occur without de-powering the part. The PCA9539 open-drain interrupt (INT) output is activated when any input state differs from its corresponding Input Port register state and is used to indicate to the system master that an input state has changed. 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 PCA9539 can remain a simple slave device. The device outputs (latched) have high-current drive capability for directly driving LEDs. The device has low current consumption. The PCA9539 is identical to the PCA9555, except for the removal of the internal I/O pullup resistor, which greatly reduces power consumption when the I/Os are held low, replacement of A2 withRESET, and a different address range. Two hardware pins (A0 and A1) are used to program and vary the fixed I2C address and allow up to four devices to share the same I2C bus or SMBus.