TCA9555RTWR Low-Voltage I/O Expander: Features, Applications and datasheet

• This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 1.65-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I 2C interface.

• The TCA9555 consists of two 8-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active high or active low operation) registers. At power-on, the I/Os are configured as inputs. 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.

• Low Standby-Current Consumption of 3.5 μA Maximum

• I 2C to Parallel Port Expander

• Open-Drain Active-Low Interrupt Output

• 5-V Tolerant I/O Ports

• Compatible With Most Microcontrollers

• 400-kHz Fast I 2C Bus

• Configurable Slave Address with 3 Address Pins

• Polarity Inversion Register

• Latched Outputs With High-Current Drive 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) – 1000-V Charged-Device Model (C101)

NA TCA9555RTWR technical specifications, attributes, parameters and parts with similar specifications to NA TCA9555RTWR.

TCA9555RTWR Simplified Schematic

TCA9555RTWR Layout

TCA9555RTWR Symbol

TCA9555RTWR Footprint

TCA9555RTWR Block Diagram

• Servers

• Routers (Telecom Switching Equipment)

• Personal Computers

• Personal Electronics

• Industrial Automation Equipment

• Products with GPIO-Limited Processors

PACKAGING INFORMATION

TAPE AND REEL INFORMATION

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