Features for the TCA6416A
- I2C to parallel port expander
- Operating power-supply voltage range of 1.65 V to 5.5 V
- Allows bidirectional voltage-level translation and GPIO expansion between 1.8-V, 2.5-V, 3.3-V, and 5-V I2C Bus and P-ports
- Low standby current consumption of 3 µA
- 5-V Tolerant I/O ports
- 400-kHz Fast I2C bus
- Hardware address pin allows two TCA6416A devices on the same I2C/SMBus bus
- Active-low reset input ( RESET)
- Open-drain active-low interrupt output ( INT)
- Input/output configuration register
- Polarity inversion register
- Internal power-on reset
- Power-up with all channels configured as inputs
- No glitch on power up
- Noise filter on SCL and SDA inputs
- Latched outputs with high-current drive maximum capability for directly driving LEDs
- Latch-up performance exceeds 100 mA Per JESD 78, class II
- ESD Protection exceeds JESD 22
- 2000-V Human-body model (A114-A)
- 200-V Machine model (A115-A)
- 1000-V Charged-device model (C101)
Description for the TCA6416A
The TCA6416A is a 24-pin device that provides 16-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 V to 5.5 V on the I2C bus side (VCCI) and a power supply voltage ranging from 1.65 V to 5.5 V on the P-port side (VCCP).
The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA6416A provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so forth.