Texas Instruments TCA9535 Low-Power I/O Expander
Texas Instruments TCA9535 Low-Power I/O Expander is a 24-pin device that provides 16 bits 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 Texas Instruments TCA9535 consists of two 8-bit configurations (input or output selection), input port, output port, and polarity inversion (active-high or active-low operation) registers. When the power is turned on, the I/Os are configured as inputs. The system master can enable the I/Os as inputs or outputs by writing to the I/O configuration bits.
Features
- I2C to parallel port expander
- Wide power supply voltage range of 1.65V to 5V
- Low standby current consumption
- An open-drain active-low interrupt output
- 5V tolerant I/O ports
- 400kHz fast I2C bus
- Polarity inversion register
- Address by three hardware address pins for the 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
- 2000V human-body model (A114-A)
- 1000V charged-device model (C101)
Applications
- Servers
- Routers (telecom switching equipment)
- Personal computers
- Personal electronics (for example, gaming consoles)
- Industrial automation
- Products with GPIO-limited process
Functional Block Diagram
發佈日期: 2016-08-24
| 更新日期: 2022-03-11