PCA9554DB Semiconductors - ICs by Texas Instruments

IC I/O EXPANDER I2C/SMBUS

Electronic & Electrical Components>Semiconductors - ICs>Driver & Interface ICs

Status:	Unknown
Series:	-
RoHS:	Unknown

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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 PCA9554 consists of one 8-bit Configuration (input or output selection), Input, Output, 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 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 or Output 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 PCA9554 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 PCA9554 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.

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Specifications

Chip Configuration	8bit
Bus Frequency	400kHz
IC Interface Type	I2C SMBus
Supply Voltage Min	2.3V
Supply Voltage Max	5.5V
Interface Case Style	SSOP
No. of Pins	16Pins
No. of I/O's	8I/O's
Product Range	-
Automotive Qualification Standard	-
RoHS Phthalates Compliant	Yes
MSL	MSL 1 - Unlimited
SVHC	No SVHC (27-Jun-2018)
Base Number	9554
Operating Temperature Max	85°C
Operating Temperature Min	-40°C
Operating Temperature Range	-40°C to +85°C
Resolution (Bits)	8bit
Supply Current	104µA
Supply Voltage Range	2.3V to 5.5V
Termination Type	Surface Mount Device

Alternative Descriptions

IC REMOTE I2C SMBUS I/O EXPANDER 16-PIN SSOP | Dan-Mar Components

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