TEXAS INSTRUMENTS  TCA9554PWR  I/O Expander, 8bit, 400 kHz, I2C, SMBus, 1.65 V, 5.5 V, TSSOP

Manufacturer Part No:
Order Code:
Technical Datasheet:
See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The TCA9554PWR is an 8-bit remote I²C and SMBus I/O Expander provides 8-bits of general purpose parallel input/output (I/O) expansion for the two-line bidirectional I²C bus (or SMBus) protocol. The device can operate with a power supply voltage ranging from 1.65 to 5.5V. The device supports both 100kHz (standard-mode) and 400kHz (fast-mode) clock frequencies. I/O expanders such as the TCA9554 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans and other similar devices. The features of the TCA9554 include an interrupt that is generated on the INT pin whenever an input port changes state. The A0, A1 and A2 hardware selectable address pins allow up to eight this device on the same I²C bus. The device can also be reset to its default sate by cycling the power supply and causing a power-on reset.
  • Open-drain active-low interrupt (INT)\ output
  • Three hardware address pins allow up to eight devices on the I²C/SMBus
  • Input/output configuration register
  • Polarity inversion register
  • Internal power-ON reset
  • Low standby current consumption
  • Power-up with all channels configured as inputs
  • No glitch on power-up
  • Noise filter on SCL/SDA input
  • Latched outputs with high-current drive maximum capability for directly driving LEDs
  • Latch-up performance exceeds 100mA per JESD 78, class II
  • 5V Tolerant i/o ports
  • 400kHz Fast I²C bus
  • Green product and no Sb/Br
Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

Product Information

Chip Configuration:
Bus Frequency:
IC Interface Type:
I2C, SMBus
Supply Voltage Min:
Supply Voltage Max:
Interface Case Style:
No. of Pins:
No. of I/O's:
Product Range:
Automotive Qualification Standard:
MSL 1 - Unlimited
No SVHC (15-Jun-2015)

Find similar products  grouped by common attribute


  • Communications & Networking
  • Computers & Computer Peripherals
  • Automation & Process Control
  • Portable Devices

Legislation and Environmental

Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Tariff No:
Weight (kg):

Associated Products

Similar Products

Find products functionally similar to this one. Select one of the following links, and you will be taken to a product group page that presents all products in this category that share the given attribute.