TCA9555DBR Part Information

Details for TCA9555DBR by Texas Instruments

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

Part Description

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 I2C 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.

Part Downloads

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Part Features

  • 400-kHz Fast I2 C Bus
  • 5-V Tolerant I/O Ports
  • Compatible With Most Microcontrollers
  • Configurable Slave Address with 3 Address Pins
  • ESD Protection Exceeds JESD 22
  • I2 C to Parallel Port Expander
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
  • Low Standby-Current Consumption of 3.5 u03bcA Maximum
  • Open-Drain Active-Low Interrupt Output
  • Polarity Inversion Register

Part Specifications

Chip Configuration 16bit
Bus Frequency 400kHz
IC Interface Type I2C SMBus
Supply Voltage Min 1.65V
Supply Voltage Max 5.5V
Interface Case Style SSOP
No. of Pins 24Pins
No. of I/O's 16I/O's
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (27-Jun-2018)
RoHS Compliant

Alternative Part Descriptions

  • I/O EXPANDER, 16BIT, 400KHZ, SSOP-24; Chip Configuration:16bit; Bus Frequency:400kHz; IC Interface Type:I2C, SMBus; Supply Voltage Min:1.65V; Supply Voltage Max:5.5V; Interface Case Style:SSOP; No. of Pins:24Pins; No. of RoHS Compliant: Yes | Newark Electronics
  • 16-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers | Texas Instruments

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