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TCA955 Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
TCA955SIMES150Yes

TCA955 is a 16-bit I²C-bus and SMBus I/O expander manufactured by SIMES.

The TCA955 is a 16-bit I²C-bus and SMBus I/O expander manufactured by SIMES.

Key Specifications:

  • Interface: I²C/SMBus compatible
  • Operating Voltage: 1.65V to 5.5V
  • Number of I/O Ports: 16 (8 per port, Port 0 & Port 1)
  • I/O Configuration: Programmable as input or output
  • Interrupt Output: Configurable for monitoring input changes
  • Frequency Support: Up to 400 kHz (Fast-mode I²C)
  • Low Standby Current: Suitable for power-sensitive applications

Features:

  • Bidirectional I/O Pins: Each can be independently configured as input or output
  • Internal Power-On Reset: Initializes registers to default state
  • Noise Filtering: On SDA/SCL inputs for improved signal integrity
  • Latch-Up Performance: Exceeds 100 mA per JESD78
  • ESD Protection: >2000V HBM per JESD22-A114

Applications:

  • Industrial control systems
  • Servers & networking equipment
  • Consumer electronics
  • LED dimming & control

For exact electrical characteristics, timing diagrams, and packaging details, refer to the official SIMES datasheet.

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