PCA9538PWR - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

PCA9538PWR
Manufacturer

TI
ChipWorker Part#

CW16257596
Category

Interface IC, Interface Controller
Package

TSSOP-16
Description

TEXAS INSTRUMENTS PCA9538PWR I/O Expander, 8Bit, 400kHz, I2C, SMBus, 2.3V, 5.5V, TSSOP
Documentation

Datasheet

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PCA9538PWR Specifications

Attribute	Attribute Value

Part Number	PCA9538PWR
Manufacturer	TI
ChipWorker Part#	CW16257596
Category	Interface IC, Interface Controller
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	16 Pin
Case/Package	TSSOP-16
Supply Voltage (DC)	2.30V ~ 5.50V
Number of Outputs	8 Output
Number of Positions	16 Position
Clock Speed	400 kHz
Voltage Nodes	2.70 V, 3.30 V, 3.60 V, 5.00 V
Number of Inputs and Outputs	8 IO
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	2.3V ~ 5.5V
Supply Voltage (Max)	5.5 V
Supply Voltage (Min)	2.3 V
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Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2018/01/15
ECCN Code	EAR99

Product Description

This 8-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 via the I2C interface [serial clock (SCL), serial data (SDA)].
The PCA9538 consists of one 8-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. However, the system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input Port or Output Port register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. All registers can be read by the system master.
The system master can reset the PCA9538 in the event of a timeout or other improper operation by asserting a low in the RESET input. The power-on reset puts the registers in their default state and initializes the I2C/SMBus state machine. The RESET pin causes the same reset/initialization to occur without powering down the part.
The PCA9538 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.
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 PCA9538 can remain a simple slave device.
The device outputs (latched) have high-current drive capability for directly driving LEDs. It has low current consumption.
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.

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