TCA9535DBR - 

I/O Expander, 16bit, 400 kHz, I2C, SMBus, 1.65 V, 5.5 V, SSOP

TCA9535DBR - I/O Expander, 16bit, 400 kHz, I2C, SMBus, 1.65 V, 5.5 V, SSOP

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Product Overview

The TCA9535DBR is a remote 16bit I2C and SMBus, low power I/O expander with interrupt output and config registers in 24 pin SSOP package. It is a provides 16bits of general purpose parallel input and 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 1.65V to 5.5V. The TCA9535 consists of two 8bit configuration (input or output selection), input port, output port and polarity inversion (active-high or active-low operation) registers. At power on, I/Os are configured as inputs. The system master can enable I/Os as either inputs or outputs by writing to the I/O configuration bits. The TCA9535 is identical to the TCA9555, except that the TCA9535 does not include the internal I/O pull-up resistor which requires pull-ups and pull-downs on unused I/O pins when configured as an input and undriven.
  • Low standby current consumption
  • Open drain active low interrupt output
  • 5V tolerant I/O ports
  • 400KHz fast I2C bus
  • Address by three hardware address pins for use of up to eight devices
  • Latched outputs with high current drive capability for directly driving LEDs
  • Latch-up performance exceeds 100mA per JESD 78, class II
  • ESD protection exceeds JESD 22 2KV human body model (A114-A), 1KV charged device model (C101)
  • Operating temperature range from -40°C to +85°C


Communications & Networking, Industrial, Automation & Process Control, Portable Devices


ESD sensitive device, take proper precaution while handling the device.

Product Information

I2C, SMBus
MSL 2 - 1 year
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